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TST/REF: parametrize set_axis tests
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2020-11-04T00:30:58Z
2020-11-04T04:02:09Z
2020-11-04T02:05:28Z
MEMBER
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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BUG: ParserError while reading a csv file generated by pandas dataframe
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2020-11-04T01:21:27Z
2021-08-14T04:49:42Z
2021-08-14T04:49:42Z
NONE
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example `temp.parquet`(Please rename the file to `temp.parquet`, attached by renaming to zip file) :[temp.parquet.zip](https://github.com/pandas-dev/pandas/files/5484945/temp.parquet.zip) ```python In[68]: import pandas as pd In[69]: df = pd.read_parquet('temp.parquet') In[70]: df Out[70]: 0 1 2 ... 26 27 28 0 <NA> <NA> <NA> ... 2028304185033190912 <NA> <NA> 1 <NA> True <NA> ... <NA> <NA> <NA> 2 <NA> True 5054 ... <NA> <NA> <NA> 3 <NA> <NA> -31346 ... -4248617305981604864 <NA> 3122060888 4 <NA> True <NA> ... -7541642907968846848 <NA> 747124512 .. ... ... ... ... ... ... ... 813 <NA> True <NA> ... <NA> <NA> 62110627 814 <NA> False -14583 ... <NA> <NA> <NA> 815 <NA> <NA> <NA> ... <NA> <NA> 3767148217 816 <NA> False 1403 ... <NA> <NA> 1941864748 817 <NA> True <NA> ... <NA> <NA> 3137914998 [818 rows x 29 columns] In[71]: df.to_csv('temp.csv') In[72]: pd.read_csv('temp.csv') Traceback (most recent call last): File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/IPython/core/interactiveshell.py", line 3417, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-72-7315a31c9d2d>", line 1, in <module> pd.read_csv('temp.csv') File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 686, in read_csv return _read(filepath_or_buffer, kwds) File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 458, in _read data = parser.read(nrows) File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 1196, in read ret = self._engine.read(nrows) File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 2155, in read data = self._reader.read(nrows) File "pandas/_libs/parsers.pyx", line 847, in pandas._libs.parsers.TextReader.read File "pandas/_libs/parsers.pyx", line 862, in pandas._libs.parsers.TextReader._read_low_memory File "pandas/_libs/parsers.pyx", line 918, in pandas._libs.parsers.TextReader._read_rows File "pandas/_libs/parsers.pyx", line 905, in pandas._libs.parsers.TextReader._tokenize_rows File "pandas/_libs/parsers.pyx", line 2042, in pandas._libs.parsers.raise_parser_error pandas.errors.ParserError: Error tokenizing data. C error: Buffer overflow caught - possible malformed input file. ``` #### Problem description The parse error occurs when we try to read the csv file generated by pandas dataframe. This error occurs to this specific dataframe. Not sure what the reason is. Hence attaching the dataframe in parquet file. #### Expected Output #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.7.8.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-52-generic Version : #57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.3 numpy : 1.19.2 pytz : 2020.1 dateutil : 2.8.1 pip : 20.2.4 setuptools : 49.6.0.post20201009 Cython : 0.29.21 pytest : 6.1.1 hypothesis : 5.37.3 sphinx : 3.2.1 blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.18.1 pandas_datareader: None bs4 : None bottleneck : None fsspec : 0.8.4 fastparquet : None gcsfs : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : 1.0.1 pytables : None pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : 0.51.2 </details> Cross referencing to cudf fuzz test thread for tracking: https://github.com/rapidsai/cudf/issues/6001
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ENH: memory_map for compressed files
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2020-11-04T04:43:10Z
2020-11-05T00:47:18Z
2020-11-05T00:40:04Z
CONTRIBUTOR
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- [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Apply memory mapping first and then compression. The existing order didn't work. This adds support for memory mapping in `read_csv` when compression is specified (python and c engine).
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Dataframe.sum() returns an error with MultiIndex columns and skipna=False
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#### Code Sample, a copy-pastable example ```python import pandas as pd import numpy as np iterables = [['bar', 'baz'], ['one', 'two'], ['dog', 'cat']] df = pd.DataFrame(np.random.randn(2, 8), columns=pd.MultiIndex.from_product(iterables, names=['first', 'second', 'third'])) df.sum(axis=1, level=['first', 'third'], skipna=False) >>> df first bar baz second one two one two third dog cat dog cat dog cat dog cat 0 -1.093149 1.087846 -0.067161 1.129021 -1.024021 1.519433 -0.349039 1.215196 1 0.622675 -1.479139 -0.057143 -0.377272 -1.061766 1.606416 -0.172099 -0.564745 ``` #### Problem description Dataframe.sum returns an error with MultiIndex columns, several levels and skipna=False. However it appears to work fine with the transposed version of the dataframe (and axis=0), or with a single level, or with skipna=True. ```python >>> df.sum(axis=1, level=['first', 'third'], skipna=False) Traceback (most recent call last): File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 368, in _get_axis_number return cls._AXIS_TO_AXIS_NUMBER[axis] KeyError: 1 During handling of the above exception, another exception occurred: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 11419, in stat_func return self._agg_by_level( File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 10258, in _agg_by_level return grouped.aggregate(applyf) File "/usr/lib/python3/dist-packages/pandas/core/groupby/generic.py", line 959, in aggregate return self._python_agg_general(func, *args, **kwargs) File "/usr/lib/python3/dist-packages/pandas/core/groupby/groupby.py", line 1083, in _python_agg_general result, counts = self.grouper.agg_series(obj, f) File "/usr/lib/python3/dist-packages/pandas/core/groupby/ops.py", line 641, in agg_series return self._aggregate_series_pure_python(obj, func) File "/usr/lib/python3/dist-packages/pandas/core/groupby/ops.py", line 701, in _aggregate_series_pure_python res = func(group, *args, **kwargs) File "/usr/lib/python3/dist-packages/pandas/core/groupby/groupby.py", line 1060, in <lambda> f = lambda x: func(x, *args, **kwargs) File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 10257, in <lambda> applyf = lambda x: method(x, axis=axis, skipna=skipna, **kwargs) File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 11422, in stat_func return self._reduce( File "/usr/lib/python3/dist-packages/pandas/core/series.py", line 4223, in _reduce self._get_axis_number(axis) File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 370, in _get_axis_number raise ValueError(f"No axis named {axis} for object type {cls.__name__}") ValueError: No axis named 1 for object type Series ``` #### Expected Output I would expect a Dataframe with the sum of the columns. Please note that it works fine with MultiIndex index (i.e with the transposed Dataframe and axis=0) ```python >>> df.transpose().sum(level=['first', 'third'], skipna=False) 0 1 first third bar dog -1.160310 0.565531 cat 2.216866 -1.856411 baz dog -1.373060 -1.233865 cat 2.734629 1.041672 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.8.6.final.0 python-bits : 64 OS : Linux OS-release : 5.9.0-1-amd64 Version : #1 SMP Debian 5.9.1-1 (2020-10-17) machine : x86_64 processor : byteorder : little LC_ALL : None LANG : fr_FR.UTF-8 LOCALE : fr_FR.UTF-8 pandas : 1.1.3 numpy : 1.19.3 pytz : 2020.1 dateutil : 2.8.1 pip : 20.1.1 setuptools : 50.3.0 Cython : None pytest : 4.6.11 hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.6.1 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : None pandas_datareader: None bs4 : 4.9.3 bottleneck : 1.2.1 fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.2 sqlalchemy : None tables : 3.6.1 tabulate : None xarray : None xlrd : 1.1.0 xlwt : 1.3.0 numba : 0.51.2 </details>
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735,870,320
MDExOlB1bGxSZXF1ZXN0NTE1MTgzMjEz
37,623
TST: 32bit dtype compat test_groupby_dropna
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1
2020-11-04T07:07:07Z
2020-11-06T15:38:24Z
2020-11-04T11:04:33Z
MEMBER
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Part of #36579 Related to ``test_groupby_nan_included``.
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735,905,151
MDU6SXNzdWU3MzU5MDUxNTE=
37,624
BUG: DataFrame doesn't roundtrip with HDFStore(..., format='table', dropna=True)
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2020-11-04T08:12:47Z
2021-08-14T04:50:49Z
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xref #37564 #### Example ``` python In [3]: import numpy as np ...: import pandas as pd ...: import pandas._testing as tm ...: from pandas.tests.io.pytables.common import ensure_clean_path ...: ...: df_with_missing = pd.DataFrame( ...: {"col1": [0, np.nan, 2], "col2": [1, np.nan, np.nan]} ...: ) ...: df_without_missing = pd.DataFrame({"col1":[0, 2], "col2": [1, np.nan]}) ...: ...: setup_path = '/tmp/store' ...: with ensure_clean_path(setup_path) as path: ...: df_with_missing.to_hdf(path, "df_with_missing", dropna=True, index=False, format="table") ...: reloaded = pd.read_hdf(path, "df_with_missing") ...: tm.assert_frame_equal(df_without_missing, reloaded) ...: --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) <ipython-input-3-77cd279acb0b> in <module> 13 df_with_missing.to_hdf(path, "df_with_missing", dropna=True, index=False, format="table") 14 reloaded = pd.read_hdf(path, "df_with_missing") ---> 15 tm.assert_frame_equal(df_without_missing, reloaded) 16 [... skipping hidden 2 frame] /workspaces/pandas/pandas/_libs/testing.pyx in pandas._libs.testing.assert_almost_equal() 44 45 ---> 46 cpdef assert_almost_equal(a, b, 47 rtol=1.e-5, atol=1.e-8, 48 bint check_dtype=True, /workspaces/pandas/pandas/_libs/testing.pyx in pandas._libs.testing.assert_almost_equal() 159 msg = (f"{obj} values are different " 160 f"({np.round(diff * 100.0 / na, 5)} %)") --> 161 raise_assert_detail(obj, msg, lobj, robj, index_values=index_values) 162 163 return True /workspaces/pandas/pandas/_testing.py in raise_assert_detail(obj, message, left, right, diff, index_values) 1053 msg += f"\n[diff]: {diff}" 1054 -> 1055 raise AssertionError(msg) 1056 1057 AssertionError: DataFrame.index are different DataFrame.index values are different (50.0 %) [left]: RangeIndex(start=0, stop=2, step=1) [right]: Int64Index([0, 2], dtype='int64') ```
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37,625
ENH: support none in header list
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2020-11-04T09:57:27Z
2021-08-14T04:51:43Z
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NONE
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I have a file with two sheets, one has a header, and another hasn't. The following code will raise `TypeError: list indices must be integers or slices, not NoneType.` ```python # Your code here, if applicable df = pd.read_excel(file_path, sheet_name=None, header=[0, None]) ```
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37,626
BUG: Collection of inconsistencies in .astype conversions
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2020-11-04T10:38:56Z
2021-09-08T07:14:15Z
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CONTRIBUTOR
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I have a use case where (automatic) casting between the following `pandas` dtypes is necessary; `bool`, `boolean`, `int64`, `Int64`, `float64`, `object` and `string`. Note that `boolean`, `Int64` and `string` are the new pandas 1.0 nullable dtypes. The default approach for this would be `series.astype(target_dtype)`, for `target_dtype` one of the above dtypes as strings. This works (given no issues with missings) but for the inconsistencies below: ```python In [1]: import pandas as pd ...: import numpy as np ``` #### `pd.NA` to `float`: Summary: Casting `float(pd.NA)` raises a `TypeError` (as does casting `float(None)`). While `np.array([None, "1"]).astype("float")` works (and gets called [here](https://github.com/pandas-dev/pandas/blob/31db14c489224e92fcc8729ad44a2ebb5114db22/pandas/core/dtypes/cast.py#L1122)), the same call with `pd.NA` fails. ```python In [2]: pd.Series(["1", "2", pd.NA], dtype="object").astype("float") TypeError: float() argument must be a string or a number, not 'NAType' In [3]: pd.Series(["1", "2", pd.NA], dtype="string").astype("float") TypeError: float() argument must be a string or a number, not 'NAType' In [4]: pd.Series(["1", "2", pd.NA], dtype="string").astype("category").astype("float") # magic workaround Out[4]: 0 1.0 1 2.0 2 NaN dtype: float64 ``` Edit: Fixed with https://github.com/pandas-dev/pandas/pull/37974. #### `object` / `string` to `Int64` (nullable) Summary: `object` columns cannot be casted to `Int64`. Casting - `object` -> `string` -> `Int64` works. - `object` -> `float` -> `Int64` works if the data does not contain `pd.NA` (see above) - `object` -> `int64` -> `Int64` works if the data does not contain missings. ```python In [5]: pd.Series(["1", "2", "3"]).astype("Int64") TypeError: object cannot be converted to an IntegerDtype In [5]: pd.Series(["1", "2", "3"], dtype="string").astype("Int64") Out[5]: 0 1 1 2 2 3 dtype: Int64 In [6]: pd.Series(["1", "2", "3"]).astype("int").astype("Int64") Out[6]: 0 1 1 2 2 3 dtype: Int64 In [7]: pd.Series(["1", "2", None]).astype("int").astype("Int64") # int columns cannot contain missings TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType' In [8]: pd.Series(["1", "2", None]).astype("float").astype("Int64") # magic workaround Out[8]: 0 1 1 2 2 <NA> dtype: Int64 In [9]: pd.Series(["1", "2", pd.NA], dtype="object").astype("float").astype("Int64") # see pd.NA -> float TypeError: float() argument must be a string or a number, not 'NAType' In [10]: pd.Series(["1", "2", pd.NA], dtype="object").astype("string").astype("Int64") Out[10]: 0 1 1 2 2 <NA> dtype: Int64 ``` Related: https://github.com/pandas-dev/pandas/issues/25472#issuecomment-630752912 #### `string` / `object` to `bool` or `boolean` Summary: Casting `string` or `object` columns to `bool` or `boolean` behaves strangely. I am not sure what the expected behaviour for `string` / `object` to `bool` / `boolean` should be. It would be nice to have consistent behaviour. - `string` / `object` -> `bool` works if there are no missings, but yields only `True` - `string` / `object` -> `boolean` raises ```python In [11]: pd.Series(["True", "False", "bogus"], dtype="string").astype("bool") # everything is True Out[11]: 0 True 1 True 2 True dtype: bool In [12]: pd.Series(["True", "False", "bogus"], dtype="object").astype("bool") Out[12]: 0 True 1 True 2 True dtype: bool In [13]: pd.Series(["True", "False", "bogus"], dtype="string").astype("boolean") TypeError: data type not understood In [14]: pd.Series(["True", "False", "bogus"], dtype="object").astype("boolean") TypeError: Need to pass bool-like values ``` #### `int` (non-nullable) to `boolean` Summary: Casting from (non-nullable) `int64` to (nullable) `boolean` raises. - `int64` -> `Int64` -> `boolean` works - `int64` -> `bool` -> `boolean` works as long as there are no missings. ```python In [15] pd.Series([-1, 0, 1], dtype="int").astype("boolean") TypeError: Need to pass bool-like values In [16]: pd.Series([-1, 0, 1], dtype="Int64").astype("boolean") Out[16]: 0 True 1 False 2 True dtype: boolean In [17]: pd.Series([-1, 0, 1], dtype="int").astype("bool").astype("boolean") Out[17]: 0 True 1 False 2 True dtype: boolean ``` Related: https://github.com/pandas-dev/pandas/issues/37614 While there exist separate issues for the first and last report, I gathered that it might be nice to have a collection of these somewhere, which I did not find. - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. #### Output of ``pd.show_versions()`` <details> ``` INSTALLED VERSIONS ------------------ commit : 15f843ab102d7a0cd7f1c7870dfec72d0e28d252 python : 3.8.6.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-52-generic Version : #57~18.04.1-Ubuntu SMP Thu Oct 15 14:04:49 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.2.0.dev0+1059.g15f843ab1.dirty numpy : 1.18.5 pytz : 2020.4 dateutil : 2.8.1 pip : 20.2.4 setuptools : 49.6.0.post20201009 Cython : 0.29.21 pytest : 5.4.3 hypothesis : 5.41.1 sphinx : 3.1.1 blosc : None feather : None xlsxwriter : 1.3.7 lxml.etree : 4.6.1 html5lib : 1.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.19.0 pandas_datareader: None bs4 : 4.9.3 bottleneck : 1.3.2 fsspec : 0.8.4 fastparquet : 0.4.1 gcsfs : 0.7.1 matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.5 pandas_gbq : None pyarrow : 2.0.0 pyxlsb : None s3fs : 0.4.2 scipy : 1.5.3 sqlalchemy : 1.3.20 tables : 3.6.1 tabulate : 0.8.7 xarray : 0.16.1 xlrd : 1.2.0 xlwt : 1.3.0 numba : 0.51.2 ``` </details>
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37,627
ENH: named agg with multiple columns
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2020-11-04T11:30:52Z
2021-09-12T11:45:45Z
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- [ ] closes #29268 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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Backport PR #37461 on branch 1.1.x: BUG: Metadata propagation for groupby iterator
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2020-11-04T14:18:37Z
2020-11-04T15:54:30Z
2020-11-04T15:54:21Z
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Backport PR #37461
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BUG: Regression in 1.1.0: ValueError when assigning tuple
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2020-11-04T14:24:38Z
2021-08-14T04:52:45Z
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python import pandas as pd d = pd.DataFrame({'a':[1,1,2,1], 'b':[(1,1,0)]*4}) d.loc[d['a']==1, 'b'] = [[(0, 0, 1)]] ``` ```python-traceback Traceback (most recent call last): File "/opt/anaconda3/envs/test/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 3418, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-7-9e18787827bf>", line 1, in <module> d.loc[d['a']==1, 'b'] = [[(0, 0, 1)]] File "/opt/anaconda3/envs/test/lib/python3.8/site-packages/pandas/core/indexing.py", line 670, in __setitem__ iloc._setitem_with_indexer(indexer, value) File "/opt/anaconda3/envs/test/lib/python3.8/site-packages/pandas/core/indexing.py", line 1666, in _setitem_with_indexer raise ValueError( ValueError: cannot set using a multi-index selection indexer with a different length than the value ``` And similarly: ```python import pandas as pd d = pd.DataFrame({'a':[1,1,2,1], 'b':[(1,1,0)]*4}) ixs = [0,1,3] vals = [[(0,0,1)]*len(ixs)] d.loc[ixs,['b']] = vals ``` ```python-traceback Traceback (most recent call last): File "/opt/anaconda3/envs/test/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 3418, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-8-73385df8ecbc>", line 1, in <module> d.loc[ixs,['b']] = vals File "/opt/anaconda3/envs/test/lib/python3.8/site-packages/pandas/core/indexing.py", line 670, in __setitem__ iloc._setitem_with_indexer(indexer, value) File "/opt/anaconda3/envs/test/lib/python3.8/site-packages/pandas/core/indexing.py", line 1666, in _setitem_with_indexer raise ValueError( ValueError: cannot set using a multi-index selection indexer with a different length than the value ``` Also see related [SO question](https://stackoverflow.com/questions/59922621/set-pandas-dataframe-entries-by-boolean-index-to-tuple-values). #### Problem description The code posted above works until pandas version 1.0.5, and fails in 1.1.0. I checked deprecation notes for 1.1.0 and could not identify if this is expected behaviour now. #### Expected Output After both assignment operations, `d` should have the following contents: ``` >>> print(d) a b 0 1 (0, 0, 1) 1 1 (0, 0, 1) 2 2 (1, 1, 0) 3 1 (0, 0, 1) ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.8.5.final.0 python-bits : 64 OS : Darwin OS-release : 19.6.0 Version : Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64 machine : x86_64 processor : i386 byteorder : little LC_ALL : en_US.UTF-8 LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.3 numpy : 1.19.4 pytz : 2020.1 dateutil : 2.8.1 pip : 20.2.4 setuptools : 50.3.0.post20201103 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : None IPython : 7.19.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.2 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.0 sqlalchemy : None tables : None tabulate : 0.8.7 xarray : None xlrd : None xlwt : None numba : None </details>
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DOC: Fix typo
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1
2020-11-04T14:39:25Z
2020-11-04T16:58:27Z
2020-11-04T16:53:39Z
CONTRIBUTOR
null
I'm not entirely sure about this one, but "If an ndarray is passed, the values are used as-is determine the groups." does sound odd to me, so I do believe it was missing the "to".
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736,191,724
MDU6SXNzdWU3MzYxOTE3MjQ=
37,631
BUG: Regression in 1.1.0. "invalid slicing for a 1-ndim ExtensionArray"
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6
2020-11-04T15:09:52Z
2020-11-09T00:38:08Z
2020-11-09T00:38:08Z
NONE
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python s1 = pd.Series(list("abc")).astype("category").iloc[[0]] s2 = pickle.loads(pickle.dumps(s1)) print(s1.dropna()) print(s2.dropna()) ``` ```bash 0 a dtype: category Categories (3, object): ['a', 'b', 'c'] --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) <ipython-input-1-c7b1204ccdb7> in <module> 6 s2 = pickle.loads(pickle.dumps(s1)) 7 print(s1.dropna()) ----> 8 print(s2.dropna()) ~/anaconda/envs/grapy/lib/python3.7/site-packages/pandas/core/series.py in dropna(self, axis, inplace, how) 4883 4884 if self._can_hold_na: -> 4885 result = remove_na_arraylike(self) 4886 if inplace: 4887 self._update_inplace(result) ~/anaconda/envs/grapy/lib/python3.7/site-packages/pandas/core/dtypes/missing.py in remove_na_arraylike(arr) 564 """ 565 if is_extension_array_dtype(arr): --> 566 return arr[notna(arr)] 567 else: 568 return arr[notna(np.asarray(arr))] ~/anaconda/envs/grapy/lib/python3.7/site-packages/pandas/core/series.py in __getitem__(self, key) 904 key = check_bool_indexer(self.index, key) 905 key = np.asarray(key, dtype=bool) --> 906 return self._get_values(key) 907 908 return self._get_with(key) ~/anaconda/envs/grapy/lib/python3.7/site-packages/pandas/core/series.py in _get_values(self, indexer) 966 def _get_values(self, indexer): 967 try: --> 968 return self._constructor(self._mgr.get_slice(indexer)).__finalize__(self,) 969 except ValueError: 970 # mpl compat if we look up e.g. ser[:, np.newaxis]; ~/anaconda/envs/grapy/lib/python3.7/site-packages/pandas/core/internals/managers.py in get_slice(self, slobj, axis) 1559 1560 blk = self._block -> 1561 array = blk._slice(slobj) 1562 block = blk.make_block_same_class(array, placement=slice(0, len(array))) 1563 return type(self)(block, self.index[slobj]) ~/anaconda/envs/grapy/lib/python3.7/site-packages/pandas/core/internals/blocks.py in _slice(self, slicer) 1756 if not isinstance(first, slice): 1757 raise AssertionError( -> 1758 "invalid slicing for a 1-ndim ExtensionArray", first 1759 ) 1760 # GH#32959 only full-slicers along fake-dim0 are valid AssertionError: ('invalid slicing for a 1-ndim ExtensionArray', array([ True])) ``` #### Problem description Not sure what changes in the serialization roundtrip through pickle, but it seems the copied Series cannot be indexed with a Boolean slice anymore, tripping up `dropna()` as a result. The following code more directly exposes the error: ```python s1 = pd.Series(list("abc")).astype("category").iloc[[0]] s2 = pickle.loads(pickle.dumps(s1)) s2[[True]] ``` The error happens e.g. when processing multiple Series in parallel (triggering serialization with pickle), and when a categorical Series has been filtered down to a single row. With another dtype, or more than one row, this error doesn't get triggered. The regression must been introduced in version 1.1.0, as in 1.0.5 the above code works as expected. #### Expected Output Behaviour of slicing, `dropna` etc. should be same before and after pickling a Series, and independent of the number of rows. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.7.6.final.0 python-bits : 64 OS : Darwin OS-release : 19.6.0 Version : Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : None.UTF-8 pandas : 1.1.4 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.0 pip : 20.0.2 setuptools : 46.1.1.post20200322 Cython : None pytest : 5.4.1 hypothesis : None sphinx : 2.4.4 blosc : None feather : None xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : 0.9.3 psycopg2 : 2.8.4 (dt dec pq3 ext lo64) jinja2 : 2.11.1 IPython : 7.13.0 pandas_datareader: None bs4 : 4.9.1 bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.2.1 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : 1.0.0 pytables : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.15 tables : None tabulate : None xarray : None xlrd : 1.2.0 xlwt : None numba : 0.46.0 </details>
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736,225,643
MDExOlB1bGxSZXF1ZXN0NTE1NDc2NTEz
37,632
Added dataclass into dataframe API reference
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1
2020-11-04T15:53:54Z
2020-11-04T17:34:04Z
2020-11-04T17:26:23Z
CONTRIBUTOR
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Added dataclass constructor for dataframe into the Pandas in pandas/init.py line 363 and 426.
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736,265,017
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37,633
Backport PR #37613 on branch 1.1.x: BUG: read-only values in cython funcs
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5
2020-11-04T16:46:33Z
2020-12-05T17:18:21Z
2020-12-05T17:18:21Z
MEMBER
null
Backport PR #37613 will update milestones on PR and associated issues once this is green-ish. Will also need to update release notes on master. (move from 1.2 to 1.1.5)
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MDExOlB1bGxSZXF1ZXN0NTE1NTY3NDM0
37,634
TST/REF: collect tests for get_numeric_data
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2020-11-04T18:32:46Z
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736,377,188
MDU6SXNzdWU3MzYzNzcxODg=
37,635
BUG: pivot() modifies arguments
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5
2020-11-04T19:44:14Z
2020-11-14T02:21:09Z
2020-11-14T02:21:09Z
CONTRIBUTOR
null
- [X] I have checked that this issue has not already been reported. - [X] I have confirmed this bug exists on the latest version of pandas. - [X] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Minimal Working Example One of the documentation examples, slightly modified: ```python import pandas as pd df = pd.DataFrame({ "lev1": [1, 1, 1, 2, 2, 2], "lev2": [1, 1, 2, 1, 1, 2], "lev3": [1, 2, 1, 2, 1, 2], "lev4": [1, 2, 3, 4, 5, 6], "values": [0, 1, 2, 3, 4, 5]}) a = ["lev1", "lev2"] b=["lev3"] df.pivot(index=a, columns=b) print(a) ``` Displays: ``` ['lev1', 'lev2', 'lev3'] ``` #### Problem description I would expect that my arguments passed to `.pivot` remain unchanged. I understand that lists, being mutable, can be modified by a function when they are used as arguments. I also understand that I can pass a set here instead of a list to keep it from being modified. However, I think it's reasonable to expect functions to be side-effect free in this case, especially when the documentation asks for a list and does not mention side effects. (FWIW, this behavior does not occur if I set the `values=` parameter). The issue cropped up when I wanted to `.pivot` multiple DataFrames using the same index. To do so, I created a partial function of `.pivot` with an anonymous list as the `index=` paramter. Here's an MWE using the dataframe from above: ```python from functools import partial alt_pivot = lambda df, index, columns: df.pivot(index=index, columns=columns) ppivot = partial(alt_pivot, index=["lev1", "lev2"]) print(ppivot) ppivot(df, columns=b) print(ppivot) ``` produces the output: ``` functools.partial(<function <lambda> at 0x00000159C45EAEE8>, index=['lev1', 'lev2']) functools.partial(<function <lambda> at 0x00000159C45EAEE8>, index=['lev1', 'lev2', 'lev3']) ``` #### Expected Output In the MWE above, ```python print(a) ``` produces ``` ['lev1', 'lev2'] ``` #### Output of ``pd.show_versions()`` (Version in my project. Confirmed same behavior in `pandas==1.1.4` and `master` branch.) <details> INSTALLED VERSIONS ------------------ commit : d9fff2792bf16178d4e450fe7384244e50635733 python : 3.7.7.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.16299 machine : AMD64 processor : Intel64 Family 6 Model 94 Stepping 3, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : None.None pandas : 1.1.0 numpy : 1.19.1 pytz : 2020.1 dateutil : 2.8.1 pip : 20.2.2 setuptools : 41.2.0 Cython : None pytest : None hypothesis : None sphinx : 3.2.0 blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.17.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.1 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.2 sqlalchemy : 1.3.19 tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : None </details>
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736,409,515
MDExOlB1bGxSZXF1ZXN0NTE1NjI4MzE4
37,636
DOC: Fix typo
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1
2020-11-04T20:41:02Z
2020-11-05T14:00:30Z
2020-11-05T12:35:47Z
CONTRIBUTOR
null
"columns(s)" sounded odd, I believe it was supposed to be just "column(s)".
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MDExOlB1bGxSZXF1ZXN0NTE1NzAyNjMw
37,637
DOC: test organization
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3
2020-11-04T23:49:27Z
2020-11-11T15:35:04Z
2020-11-11T00:19:19Z
MEMBER
null
Documenting the MO behind the test organization we've been doing. 1) I expect this is not valid rst ATM 2) The style does not match the rest of the docs, so probably needs a re-write.
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736,567,839
MDExOlB1bGxSZXF1ZXN0NTE1NzU4NDcz
37,638
TST/REF: collect indexing tests by method
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2020-11-05T02:54:40Z
2020-11-06T00:27:00Z
2020-11-06T00:26:14Z
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MDExOlB1bGxSZXF1ZXN0NTE1NzYyODEz
37,639
REF: move get_filepath_buffer into get_handle
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7
2020-11-05T03:10:46Z
2020-12-11T04:34:31Z
2020-11-13T13:39:29Z
CONTRIBUTOR
null
- [x] closes #33987 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` This PR makes `get_filepath_buffer` a private function and is called inside `get_handle` - one function to rule all of IO ;) This PR will make it easier for future PRs to make the IO-related interface of `read/to_*` more consistent as most of them should support compression/memory mapping (for reading)/(binary) file handles/storage options. Notes to keep track of future follow-up PRs: - context manager for `get_handle` - `storage_options` for `to_excel`
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37,640
REF: de-duplicate _validate_insert_value with _validate_scalar
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2020-11-05T03:19:43Z
2020-11-06T00:39:03Z
2020-11-06T00:31:07Z
MEMBER
null
There is only one place where `_validate_insert_value` isnt identical to `_validate_scalar`, and that is in `DatetimeLikeArrayMixin._validate_scalar`, which ATM does not unbox (which all the other `_validate_scalar` methods do). This updates `_validate_scalar` to unbox. If we stopped there, `TimedeltaIndex.get_loc` would take a pretty significant performance hit, so I added a `unbox=True` kwarg to `_validate_scalar` that TDI.get_loc uses to keep perf flat. Made `_validate_scalar` keyword-only past the first (non-self) argument. Last, renamed `Index._validate_scalar` to `Index._require_scalar` to disambiguate the names. (one of the two uses of `Index._validate_scalar` is wrong and will be removed, but thats a whole different can of worms)
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37,641
BUG: RollingGroupby duplicates columns in index even with group_keys=False
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2
2020-11-05T03:48:46Z
2020-11-09T18:56:37Z
2020-11-09T18:56:37Z
CONTRIBUTOR
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example ```python import pandas as pd arrays = [['val1', 'val1', 'val2'], ['val1', 'val1', 'val2']] index = pd.MultiIndex.from_arrays(arrays, names=('idx1', 'idx2')) s = pd.Series([1, 2, 3], index=index) print( s.groupby(["idx1", "idx2"], group_keys=False).rolling(1).mean() ) ``` #### Problem description the group_keys parameter in Seried.groupby() is broken since 1.1.0 when using .rolling() It does not seem to be an issue if another function instead of *rolling* is used, eg ```python s.groupby(["idx1", "idx2"], group_keys=False).mean() ``` In pandas=1.1.{0,1} the output is idx1 idx2 val1 val1 (val1, val1) 1.0 val1 (val1, val1) 2.0 val2 val2 (val2, val1) 3.0 In pandas=1.1.{2,3,4} the output is idx1 idx2 idx1 idx2 val1 val1 val1 val1 1.0 val1 2.0 val2 val2 val2 val2 3.0 #### Expected Output (as per pandas 1.0.*) idx1 idx2 val1 val1 1.0 val1 2.0 val2 val2 3.0 #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : f2ca0a2665b2d169c97de87b8e778dbed86aea07 python : 3.6.7.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.17134 machine : AMD64 processor : Intel64 Family 6 Model 63 Stepping 2, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : None.None pandas : 1.1.1 numpy : 1.16.1 pytz : 2018.9 dateutil : 2.8.0 pip : 10.0.1 setuptools : 39.0.1 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.3.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10 IPython : 7.2.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : None numexpr : None odfpy : None openpyxl : 2.6.0 pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : None </details>
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BUG: DataFrame.to_dict(orient="records") does not return native types with frame constructed from pyarrow Scalars
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2020-11-05T03:59:54Z
2020-11-06T23:55:19Z
null
MEMBER
null
On 1.2 master: ```python In [15]: import pandas as pd ...: import pyarrow as pa ...: ...: df = pd.DataFrame({'a': pa.scalar(7)}, index=['a']) ...: print(type(df.to_dict(orient="records")[0]['a'])) ...: <class 'pyarrow.lib.Int64Scalar'> ``` This is inconsistent with the corresponding op for NumPy backed types (xref #37571) ``` In [13]: import pandas as pd ...: import numpy as np ...: ...: df = pd.DataFrame({'a': np.int(7)}, index=['a']) ...: print(type(df.to_dict(orient="records")[0]['a'])) ...: <class 'int'> ``` In general we'd like `to_dict` to return Python native types if possible.
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DEPR: inplace dtype-changing methods on Categorical
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2020-11-05T04:26:23Z
2021-10-02T04:09:06Z
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- [x] `Categorical.remove_unused_categories` https://github.com/pandas-dev/pandas/pull/37918 - [x] `Cateogrical.remove_categories` #37981 - [x] `Categorical.add_categories` https://github.com/pandas-dev/pandas/pull/41118 - [x] `Categorical.reorder_categories` https://github.com/pandas-dev/pandas/pull/41133 - [x] `Categorical.rename_categories` #41186 - [x] `Categorical.set_categories` https://github.com/pandas-dev/pandas/pull/41307 The ability to alter an existing array's dtype is a footgun. We can return a new object without having to make a copy.
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37,644
BUG: preserve fold in Timestamp.replace
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2020-11-05T09:54:34Z
2020-11-09T13:10:19Z
2020-11-08T02:22:48Z
MEMBER
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- [X] closes #37610 - [X] 1 tests added / 1 passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [X] whatsnew entry ## Problem We currently lose `fold` information (whether the Timestamp corresponds to the first or second instance of wall clock time in a DST transition) when calling `Timestamp.replace`. ## Solution A simple addition to the code of `Timestamp.replace` should fix this. ## Test I added the test for the use case I came up with in the issue discussion. The OP example is losing `fold` when deleting timezone information with `Timetsamp.replace`, and that's not really a bug, but replacing a valid dateutil timezone with itself and losing `fold` definitely is. The proposed solution fixes the original example as well. I just don't think we should be tracking it in tests, as it's not clear to me why `fold` must be preserved in a `Timestamp` with no timezone information (but it is the convention recommended in [PEP 495, fold section](https://www.python.org/dev/peps/pep-0495/#the-fold-attribute) to let users keep invalid fold and to just ignore it). ## Some details IIRC, we ignore `fold`, when it doesn't do anything, so we should be safe preserving `fold` while replacing tzinfo with None, as in the OP example. I remember this coming up when we introduced fold support, and we made sure that the fold-aware functions don't care what fold is outside of a DST transition with a dateutil timezone (this was done to satisfy the requirements of [PEP 495, fold section](https://www.python.org/dev/peps/pep-0495/#the-fold-attribute)).
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ENH: date_format and datetime_format for writing to ODS
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#### Is your feature request related to a problem? Currently, dates and datetimes are written correctly to ODS, but the cells are not marked as containing datetime data (LibreOffice Calc interprets them as numbers), and also the `date_format` and `datetime_format` arguments to ExcelWriter are currently ignored by the odswriter. #### Describe the solution you'd like `_odswriter.py` should make use of these arguments. #### API breaking implications None. #### Describe alternatives you've considered I cannot think of alternatives.
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Order not preserved in OrderedDict when using to_dict with orient='records'
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version: pandas 1.1.2 reproducer: DataFrame([{"B": 1, "A": 2}]).to_dict(orient='records', into=OrderedDict) > [OrderedDict([('A', 2), ('B', 1)])] expected behavior: DataFrame([{"B": 1, "A": 2}]).to_dict(orient='records', into=OrderedDict) > [OrderedDict([('B', 1), ('A', 2)])]
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ENH: Allow support for dtype datetime64[ms] or other units or numpy.datetime64 cols.
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#### Is your feature request related to a problem? I would like to be able to use Pandas datetime datatype column for datetimes beyond the bounds for `ns` units (which are `1677-09-21 00:12:43.145225` and `2262-04-11 23:47:16.854775807`). As will often be dealing with dates above and below these thresholds. Apologies if already open on another issue but couldn't quite find this. Not sure if tied in with [this issue](https://github.com/pydata/xarray/issues/789) #### Describe the solution you'd like ```python df = pd.DataFrame({"col": ["2020-01-01", "2999-01-01", "1990-01-01", None]}) ``` One of the following: ```python import pandas as pd df = pd.DataFrame({"col": ["2020-01-01", "2999-01-01", "1990-01-01", None]}) df.col = pd.to_datetime(df.col, base_unit="ms") df.col.dtype # datetime64[ms] ``` or ```python import pandas as pd import numpy as np df = pd.DataFrame() df["col"] = np.array(["2020-01-01", "2999-01-01", "1990-01-01", None], dtype='datetime64[ms]') df.col.dtype # datetime64[ms] ``` #### API breaking implications Not sure, I assume this might be a big ask depending on how the column casting internals work. #### Describe alternatives you've considered At the moment the only workaround is having an object column with datetimes. However I believe this stops you from using the `.dt` method on the column which is really handy. ```
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37,648
BUG: Series.to_dict does not return native Python types
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15
2020-11-05T15:01:59Z
2021-02-19T01:59:09Z
2021-02-19T01:12:56Z
MEMBER
null
- [x] xref #25969 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This resolves the issue of return types from `to_dict`. #25969 also discusses return types from `.items()`, which relates to an outstanding NumPy issue numpy/numpy#14139, and I don't address that part here atm
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Addressed dataclass comment
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2020-11-05T15:10:19Z
2020-11-05T15:26:32Z
2020-11-05T15:26:32Z
CONTRIBUTOR
null
Addressed comments for adding dataclass into pandas dataframe reference API
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REF: implement Categorical.encode_with_my_categories
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2020-11-05T15:18:13Z
2020-11-09T00:54:30Z
2020-11-09T00:37:38Z
MEMBER
null
Categorical._validate_listlike is misleading, since it treats not-in-categories entries as NAs, whereas we usually want to raise when we see those. This implements the more obviously-named encode_with_my_categories
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Merge pull request #1 from pandas-dev/master
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2020-11-05T15:30:12Z
2020-11-05T15:30:43Z
2020-11-05T15:30:43Z
CONTRIBUTOR
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Merge original repo to update forked repository - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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BUG: don't suppress OSError in tzlocal
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0
2020-11-05T16:06:59Z
2020-11-06T00:11:38Z
2020-11-06T00:09:03Z
MEMBER
null
Seeing a bunch of suppressed exceptions in the py38 windows tests. Hopefully this will cause them to surface correctly.
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37,653
ENH: PyPy3 testing
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9
2020-11-05T17:25:11Z
2021-11-20T18:32:47Z
null
NONE
null
#### Is your feature request related to a problem? With the increasing support for PyPy3 in NumPy, it would be helpful if pandas started testing against PyPy3. #### Describe the solution you'd like Please consider adding `pypy3` to the `.travis.yml` (allowed to fail for now). #### API breaking implications No expected API breaks #### Describe alternatives you've considered This is more of a portability concern than anything else. #### Additional context Something like: ```yaml matrix: - python: pypy3 env: - JOB="pypy3" PATTERN="(not slow and not network and not clipboard)" allow_failures: - python: pypy3 env: - JOB="pypy3" PATTERN="(not slow and not network and not clipboard)" ```
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37,654
ENH: support zoneinfo tzinfo objects
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null
22
2020-11-05T21:11:44Z
2021-10-13T16:07:09Z
null
MEMBER
null
ATM we support pytz, dateutil, and datetime.timezone tzinfos. Now that it is part of the stdlib py39, we should also support zoneinfo tzinfos.
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37,655
TST: split up tests/plotting/test_frame.py into subdir & modules #34769
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16
2020-11-05T21:29:47Z
2020-11-13T05:52:50Z
2020-11-13T02:51:08Z
CONTRIBUTOR
null
Created instead of #37538 - [x] closes #34769 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry I moved the file to a new directory. What is the best structure for this folder? [before_test_ploting_frame](https://gist.github.com/Mikhaylov-yv/999de1451e8ecc836215b30db34ef841) [after_test_ploting_frame](https://gist.github.com/Mikhaylov-yv/98eca32c21f59cc9e7653cd96d5fabd2)
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37,656
ENH: option to plot data points on top of boxplot
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10
2020-11-05T22:41:55Z
2021-02-07T15:31:39Z
2021-02-07T15:31:39Z
NONE
null
- [x ] tests added / passed - [x ] passes `black pandas` - [x ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry - not sure how to do this. I guess I have to wait until pull request is complete. This change is a a feature I often want, which is the ability to add raw data on top of a boxplot to get a better idea of data distribution.
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37,657
BUG: unpickling modifies Block.ndim
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2
2020-11-06T00:38:38Z
2020-11-09T11:20:22Z
2020-11-09T00:38:09Z
MEMBER
null
- [x] closes #37631 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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737,388,111
MDExOlB1bGxSZXF1ZXN0NTE2NDM4ODA2
37,658
REF: dont support dt64tz in nanmean
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1
2020-11-06T01:36:47Z
2020-11-09T00:44:40Z
2020-11-09T00:38:23Z
MEMBER
null
nanmean is annotated as taking a ndarray, no reason for it to support dt64tz
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MDExOlB1bGxSZXF1ZXN0NTE2NDU4OTI1
37,659
CI: catch windows py38 OSError
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2
2020-11-06T02:50:11Z
2020-11-07T01:30:23Z
2020-11-07T01:24:28Z
MEMBER
null
Still seeing these following #37652, so catching again one level higher.
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MDExOlB1bGxSZXF1ZXN0NTE2NDc0NjQx
37,660
REF: implement _wrap_reduction_result
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37,661
BUG: RollingGroupby when groupby key is in the index
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2020-11-06T07:07:49Z
2020-11-10T13:40:23Z
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- [x] closes #37641 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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MDExOlB1bGxSZXF1ZXN0NTE2NTgwMTU1
37,662
Move inconsistent namespace check to pre-commit, fixup more files
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xref https://github.com/pandas-dev/pandas/pull/37401#discussion_r515312381
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37,663
BUG: Incorrect behavior of binary operations when left/right operands have different type (Series/DataFrame)
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2020-11-06T12:40:35Z
2020-11-07T15:22:04Z
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example ```python import pandas as pd df = pd.DataFrame([0,1,2]).append(pd.DataFrame([3,4,5])) df.columns = ['a'] print(df - df.a) ``` #### Problem description Why we can not to do binary operations when we work with `DataFrame` and `Series`(dataframe has 1 columns, `len(df.index)==len(series.index)) with duplicated indexes? If left and right operands have the same type (`DataFrame/DataFrame` for example) it works. #### Expected Output ``` 0 0 1 0 2 0 0 0 1 0 2 0 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.8.3.final.0 python-bits : 64 OS : Linux OS-release : 4.15.0-50-generic Version : #54-Ubuntu SMP Mon May 6 18:46:08 UTC 2019 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US LOCALE : en_US.ISO8859-1 pandas : 1.1.4 numpy : 1.19.2 pytz : 2020.1 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.4.0.post20200518 Cython : None pytest : 6.1.1 hypothesis : None sphinx : None blosc : None feather : 0.4.1 xlsxwriter : None lxml.etree : 4.5.2 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : None pandas_datareader: None bs4 : 4.9.3 bottleneck : None fsspec : 0.8.3 fastparquet : None gcsfs : None matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.5 pandas_gbq : 0.14.0 pyarrow : 1.0.0 pytables : None pyxlsb : None s3fs : 0.5.1 scipy : 1.5.2 sqlalchemy : 1.3.19 tables : 3.6.1 tabulate : None xarray : 0.16.1 xlrd : 1.2.0 xlwt : None numba : None </details>
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MDExOlB1bGxSZXF1ZXN0NTE2NzQwNzQ3
37,664
REF: simplify cycling through colors
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2
2020-11-06T13:23:06Z
2020-11-09T11:33:41Z
2020-11-08T02:11:13Z
MEMBER
null
- [ ] closes #37604 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry I tried to address #37604, but it turns out that on some occasions it is absolutely mandatory to return more colors than ``num_colors`` says. In particular, this is the test that cannot be updated and the underlying code cannot be easily modified as well. ``` pandas/tests/plotting/test_frame.py ... class TestDataFramePlots(TestPlotBase): ... def test_bar_user_colors(self): df = DataFrame( {"A": range(4), "B": range(1, 5), "color": ["red", "blue", "blue", "red"]} ) # This should *only* work when `y` is specified, else # we use one color per column ax = df.plot.bar(y="A", color=df["color"]) result = [p.get_facecolor() for p in ax.patches] expected = [ (1.0, 0.0, 0.0, 1.0), (0.0, 0.0, 1.0, 1.0), (0.0, 0.0, 1.0, 1.0), (1.0, 0.0, 0.0, 1.0), ] assert result == expected ``` When "y" is specified, then the number of colors must be the length of the series df["A"], but inside the BarPlot class there is no opportunity to check for that condition. So, let ``get_standard_colors`` return maximum of ``num_colors`` and ``len(colors)``. This way all tests work without modifications, just minor improvement in the cycling function.
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MDExOlB1bGxSZXF1ZXN0NTE2Nzc0MTA3
37,665
Start testing pypy3
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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37,666
TST: match matplotlib warning message
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4
2020-11-06T15:47:11Z
2020-11-09T11:34:18Z
2020-11-07T14:43:52Z
MEMBER
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Follow up on #36982. Since, currently ``assert_produces_warning`` now allows matching warning message, instead of the comment we will match the message.
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2020-11-08T01:05:39Z
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- [ ] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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TST: MatplotlibDeprecationWarning in test related to pie chart
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2020-11-06T16:10:31Z
2020-11-08T03:00:20Z
2020-11-08T03:00:20Z
MEMBER
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- [x] I have checked that this issue has not already been reported. - [ ] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```bash pytest -Werror pandas/tests/plotting/tests_frame.py::TestDataFramePlots::test_pie_df_nan ``` #### Problem description When testing ``test_frame.py`` the following warning is issued: ``` ============================================================================================================= warnings summary ============================================================================================================= pandas/tests/plotting/test_frame.py::TestDataFramePlots::test_pie_df_nan pandas\plotting\_matplotlib\core.py:1551: MatplotlibDeprecationWarning: normalize=None does not normalize if the sum is less than 1 but this behavior is deprecated since 3.3 until two minor releases later. After the deprecation period the default value will be normalize=True. To prevent normalization pass normalize=False results = ax.pie(y, labels=blabels, **kwds) -- Docs: https://docs.pytest.org/en/stable/warnings.html ``` This code is the reason for the warnings: ``` matplotlib/axes/_axes.py ... def pie(...): ... if normalize is None: if sx < 1: cbook.warn_deprecated( "3.3", message="normalize=None does not normalize " "if the sum is less than 1 but this behavior " "is deprecated since %(since)s until %(removal)s. " "After the deprecation " "period the default value will be normalize=True. " "To prevent normalization pass normalize=False ") else: normalize = True ``` #### Expected Output No warnings. #### Versions The issue is present starting from matplotlib version 3.3. Before that ``normalize`` kwarg was not applicable to ``plt.pie``. <details> >>> pd.show_versions() INSTALLED VERSIONS ------------------ commit : 210c06e2f29bdb968fa715756bef9dcf1dfdc818 python : 3.8.6.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.18362 machine : AMD64 processor : Intel64 Family 6 Model 158 Stepping 10, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : English_United States.1251 pandas : 1.2.0.dev0+1079.g210c06e2f numpy : 1.19.2 pytz : 2020.1 dateutil : 2.8.1 pip : 20.2.4 setuptools : 49.6.0.post20201009 Cython : 0.29.21 pytest : 6.1.1 hypothesis : 5.37.4 sphinx : 3.2.1 blosc : None feather : None xlsxwriter : 1.3.7 lxml.etree : 4.6.1 html5lib : 1.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.18.1 pandas_datareader: None bs4 : 4.9.3 bottleneck : 1.3.2 fsspec : 0.8.4 fastparquet : 0.4.1 gcsfs : 0.7.1 matplotlib : 3.3.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.5 pandas_gbq : None pyarrow : 2.0.0 pyxlsb : None s3fs : 0.4.2 scipy : 1.5.0 sqlalchemy : 1.3.20 tables : 3.6.1 tabulate : 0.8.7 xarray : 0.16.1 xlrd : 1.2.0 xlwt : 1.3.0 numba : 0.51.2 </details>
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2020-11-06T16:13:48Z
2020-11-09T11:33:52Z
2020-11-08T03:00:21Z
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- [ ] closes #37668 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Fix MatplotlibDeprecationWarning for pie chart by specifically passing ``normalize=True``.
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2020-11-06T16:47:59Z
2020-11-06T17:16:59Z
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xref #34471 The `DataFrame` constructor doesn't appear to be working correctly with ```python In [3]: pd.DataFrame([[1], [2]], index=[["a", "b"], ["c", "d"]]) Out[3]: 0 a c 1 b d 2 ``` I *think* we might expect ```python In [3]: pd.DataFrame([[1], [2]], index=[["a", "b"], ["c", "d"]]) Out[3]: 0 a b 1 c d 2 ``` FTR I'm not versant with the context here (whether this is in fact expected and we should maybe update the docs or if there is something to change)
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- [x] closes #26468 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Was fixed already, added a test
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738,154,218
MDU6SXNzdWU3MzgxNTQyMTg=
37,681
BUG: CategoricalIndex.fillna with a tuple category
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2020-11-07T03:41:39Z
2021-08-14T05:02:34Z
null
MEMBER
null
The _require_scalar check is wrong in this case (also likely for object dtype Index) ``` ci = pd.CategoricalIndex([(0, 1), (1, 2), pd.NA]) >>> ci.fillna((0, 1)) [...] TypeError: 'value' must be a scalar, passed: tuple >>> ci._data.fillna((0, 1)) [(0, 1), (1, 2), (0, 1)] Categories (2, object): [(0, 1), (1, 2)] ```
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37,682
BUG: Index.where vs Series.where mismatch
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1
2020-11-07T03:48:34Z
2020-12-29T18:09:25Z
2020-12-29T18:09:25Z
MEMBER
null
If in merge._maybe_add_join_keys we replace a call to Index.where with a call to Series.where, we get a test failure because of the following mismatch: ``` dr = pd.date_range("2001-01-01", periods=3) lvals = pd.DatetimeIndex([dr[0], dr[1], pd.NaT])._data rvals = pd.Categorical([dr[0], pd.NaT, dr[2]]) mask = np.array([False, False, True]) >>> pd.Series(lvals).where(~mask, rvals)._values array([Timestamp('2001-01-01 00:00:00'), Timestamp('2001-01-02 00:00:00'), 978480000000000000], dtype=object) >>> pd.Index(lvals).where(~mask, rvals)._values <DatetimeArray> ['2001-01-01 00:00:00', '2001-01-02 00:00:00', '2001-01-03 00:00:00'] Length: 3, dtype: datetime64[ns] ``` The Index version looks better behaved. These should share an implementation.
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37,683
CLN: _replace_single
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5
2020-11-07T04:52:12Z
2020-11-08T02:08:02Z
2020-11-08T01:47:27Z
MEMBER
null
Confirmed that the `regex` kwarg is always bool, which lets us remove some gymnastics (L2570-L2586). Then removed always-True `convert` kwarg.
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37,684
TYP: @final for NDFrame methods
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2020-11-07T05:31:58Z
2021-11-20T23:21:16Z
2020-11-07T15:38:31Z
MEMBER
null
Makes it a little easier to reason about the code on sight.
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37,685
BUG: DataFrame.groupby(., dropna=True, axis=0) incorrectly throws ShapeError [RESUBMIT]
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2020-11-07T15:59:45Z
2020-11-07T16:26:09Z
2020-11-07T16:26:05Z
MEMBER
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- [x] closes #35612 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Resubmitting #35751 to see if I can get to green here
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37,686
ENH: read_excel improve usecols
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2020-11-07T16:53:24Z
2021-04-15T02:27:19Z
2021-04-14T14:39:59Z
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#### Is your feature request related to a problem? No #### Describe the solution you'd like Let's imagine a excel database with multiple sheets We can do `pd.read_excel(db, sheet_name=[0, 1], usecols=[0, 1])` and we would read the first and second columns of the first and second sheets. Imagine we need to read the first and second columns from the first sheet and the second and third columns from the second sheet. A solution could be to pass to `usecols` a list of list, for example: `pd.read_excel(db, sheet_name=[0, 1], usecols=[[0,1], [1,2]])`. Both integer and string should be used inside the inner-list #### API breaking implications No, well I guess #### Describe alternatives you've considered Multiple run of `read_excel`
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37,687
pd.Series.loc.__getitem__ promotes to float64 instead of raising KeyError
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2020-11-07T23:50:43Z
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- [x] closes #25927 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` cc @jreback Added a test. The test above was the only one explicitly added for the ``KeyError``
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37,688
TYP: make some internal funcs keyword-only
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37,689
CLN: Clean indexing tests
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2020-11-07T23:01:09Z
2020-11-08T12:07:04Z
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- [x] tests passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Found a few unuesed statements
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DOC: add examples to insert and update generally
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4
2020-11-07T23:10:53Z
2020-12-08T18:45:16Z
2020-12-08T18:32:45Z
CONTRIBUTOR
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This commit mainly adds examples on usage. This commit also fills in information suggested by `validate_docstrings.py` script. Ran ``` python scripts/validate_docstrings.py pandas.DataFrame.insert ``` to check docs and added in suggested information (e.g., See Also section). - [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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2020-11-07T23:44:47Z
2020-11-08T02:41:15Z
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TST: Add tests for dtype changes when assigning values via indexing
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13
2020-11-08T00:25:45Z
2021-01-28T03:10:01Z
null
MEMBER
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#37680 will fix the assigning problems reported in #26395. We should add further tests for iloc/iat and different dtypes for all cases (loc, at, iloc, iat) cc @jreback
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QST: read_stata encoding problem..
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3
2020-11-08T00:48:40Z
2021-02-06T00:06:56Z
2021-02-06T00:06:56Z
NONE
null
I have a `.dta` file with Vietnamese categorial data. `df = pd.read_stata('MucA.dta')` produces the following df: ``` tinh huyen xa diaban hoso matv m1ac2 m1ac3 ... m1ac12 m1ac13 m1ac14a m1ac14b m1ac15a m1ac15b m1ac15c m1ac15d 0 Thµnh phè Hµ Néi 1 4 8 13 2 Nam Vî chång ... Trong x· ph­êng NaN NaN NaN Kh«ng Kh«ng Cã Kh«ng 1 Thµnh phè Hµ Néi 1 4 8 13 1 N÷ Chñ hé ... Trong x· ph­êng NaN NaN NaN Kh«ng Kh«ng Cã Kh«ng 2 Thµnh phè Hµ Néi 1 4 8 14 2 Nam Kh¸c ... N¬i kh¸c trong tØnh NaN NaN NaN Kh«ng Kh«ng Kh«ng Kh«ng 3 Thµnh phè Hµ Néi 1 4 8 14 1 N÷ Chñ hé ... Trong x· ph­êng NaN NaN NaN Kh«ng Kh«ng Kh«ng Kh«ng 4 Thµnh phè Hµ Néi 1 4 8 15 2 N÷ Vî chång ... Trong x· ph­êng NaN NaN NaN Kh«ng Cã Kh«ng Kh«ng ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 36076 TØnh Cµ Mau 973 32248 2 15 4 N÷ Con ... Trong x· ph­êng NaN NaN NaN NaN NaN NaN NaN 36077 TØnh Cµ Mau 973 32248 2 15 5 N÷ Con ... Trong x· ph­êng NaN NaN NaN NaN NaN NaN NaN 36078 TØnh Cµ Mau 973 32248 2 15 1 Nam Chñ hé ... Trong x· ph­êng NaN NaN NaN Kh«ng Kh«ng Kh«ng Kh«ng 36079 TØnh Cµ Mau 973 32248 2 15 2 N÷ Vî chång ... Trong x· ph­êng NaN NaN NaN Kh«ng Kh«ng Kh«ng Kh«ng 36080 TØnh Cµ Mau 973 32248 2 15 3 N÷ Con ... Trong x· ph­êng NaN NaN NaN Kh«ng Kh«ng Kh«ng Kh«ng ``` I want to try other encodings to restore the Vietnamese characters, how may I do so?
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37,694
TYP: @final for NDFrame methods
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2020-11-08T02:52:02Z
2020-11-10T23:28:45Z
2020-11-10T23:16:46Z
MEMBER
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attempt 2
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37,695
Dataframe.sum() returns an error with MultiIndex columns and skipna=False
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1
2020-11-08T04:02:54Z
2020-11-08T14:55:31Z
2020-11-08T14:55:08Z
CONTRIBUTOR
null
- [ ] closes #37622 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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REF: implement replace_regex, remove unreachable branch in ObjectBlock.replace
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2020-11-08T04:12:17Z
2020-11-09T03:32:20Z
2020-11-09T03:30:12Z
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DOC: capitalize Gregorian and fix word order
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1
2020-11-08T05:28:39Z
2020-11-10T02:03:22Z
2020-11-09T21:10:46Z
CONTRIBUTOR
null
Gregorian is a proper noun (https://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar). Also, "proleptic" is modifying the compound noun "Gregorian epoch" rather than "Gregorian" modifying a "proleptic epoch". - [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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37,698
BUG: PyMysql : module 'sqlalchemy' has no attribute 'engine'
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2020-11-08T07:56:26Z
2021-02-28T13:02:30Z
2021-02-28T13:02:30Z
NONE
null
- [x] I have checked that this issue has not already been reported. - [ ] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example ```python # Your code here self.conn = pymysql.connect(**info_dic) pd.read_sql(sql, self.conn) ``` #### Problem description line 53, in read_data_frame return pd.read_sql(sql, self.conn) File "/usr/local/lib/python3.6/site-packages/pandas/io/sql.py", line 394, in read_sql pandas_sql = pandasSQL_builder(con) File "/usr/local/lib/python3.6/site-packages/pandas/io/sql.py", line 532, in pandasSQL_builder if _is_sqlalchemy_connectable(con): File "/usr/local/lib/python3.6/site-packages/pandas/io/sql.py", line 86, in _is_sqlalchemy_connectable return isinstance(con, sqlalchemy.engine.Connectable) AttributeError: module 'sqlalchemy' has no attribute 'engine' [this should explain **why** the current behaviour is a problem and why the expected output is a better solution] #### Expected Output #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] INSTALLED VERSIONS ------------------ commit: None python: 3.6.1.final.0 python-bits: 64 OS: Linux OS-release: 4.4.224-1.el7.elrepo.x86_64 machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.utf8 LOCALE: en_US.UTF-8 pandas: 0.20.3 pytest: None pip: 10.0.1 setuptools: 28.8.0 Cython: 0.28.1 numpy: 1.14.0 scipy: 1.0.0 xarray: None IPython: None sphinx: None patsy: 0.5.0 dateutil: 2.6.1 pytz: 2017.3 blosc: None bottleneck: None tables: None numexpr: None feather: None matplotlib: 2.2.2 openpyxl: 2.5.2 xlrd: 1.1.0 xlwt: None xlsxwriter: None lxml: 4.5.2 bs4: None html5lib: None sqlalchemy: 1.2.4 pymysql: 0.8.0 psycopg2: None jinja2: None s3fs: None pandas_gbq: None pandas_datareader: None </details>
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Addressed comments for doc update
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1
2020-11-08T08:44:47Z
2020-12-06T23:48:52Z
2020-12-06T23:48:51Z
CONTRIBUTOR
null
-Arranged alignment, and addressed comments for the document enhancement.
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DOC: Add caveat to to_stata with version=119
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2
2020-11-08T11:20:49Z
2020-11-10T04:08:07Z
2020-11-10T03:38:45Z
CONTRIBUTOR
null
- [x] closes #37490 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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DOC: Highlight pre-commit section
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5
2020-11-08T12:36:07Z
2020-11-10T09:43:17Z
2020-11-10T09:42:08Z
CONTRIBUTOR
null
- [x] closes #37358 - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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738,485,836
MDExOlB1bGxSZXF1ZXN0NTE3MzIwMzk2
37,702
CLN: Simplify groupby head/tail tests
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2020-11-08T15:08:24Z
2020-12-06T14:04:53Z
2020-11-09T00:39:05Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Going to add axis=1 tests as part of resolution of #9772, simplifying test first.
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37,703
remove unnecessary use of Appender
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1
2020-11-08T15:44:52Z
2020-11-11T20:31:02Z
2020-11-11T20:30:48Z
CONTRIBUTOR
null
- [x] ref #31942 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] removes the last use of Appender() in NDFrame
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REF: simplify NDFrame.replace, ObjectBlock.replace
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1
2020-11-08T18:16:28Z
2020-11-09T00:39:32Z
2020-11-09T00:37:00Z
MEMBER
null
This makes it so that we only call BlockManager.replace from one spot, so we can rule out more cases when reasoning about the arguments in ObjectBlock.replace. This will have a merge conflict with #37696; doesnt matter which one goes in first. One both are in, there are further simplifications available. I'm hopeful that we'll be able to get rid of Categorical.replace altogether (and with it, CategoricalBlock.replace, CategoricalBlock._replace_list), but that's a few steps away at best.
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37,705
BUG: read_html - file path cannot be pathlib.Path type
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3
2020-11-08T20:47:34Z
2020-11-11T02:30:17Z
2020-11-11T02:30:16Z
NONE
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```python import pandas as pd from pathlib import Path file_path_string = r'C:\Users\Desktop\my_file.html' file_path = Path(file_path_string) df1 = pd.read_html(file_path_string)[0] # works fine df2 = pd.read_html(file_path)[0] # raises TypeError: cannot parse 'from WindowsPath' ``` Why do `read_excel()`, `read_csv()`, `to_excel()`, `to_csv()`, ... support `pathlib.Path` while `read_html()` doesn't?
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MDExOlB1bGxSZXF1ZXN0NTE3MzgxMjg1
37,706
BUG: Fix return of missing values when applying loc to single level of MultiIndex
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2
2020-11-08T22:31:11Z
2020-11-09T20:29:14Z
2020-11-09T20:27:35Z
MEMBER
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- [x] closes #27104 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This confused ``-1`` representing missing values in input with the ``-1`` signaling which components to exclude from output.
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MDExOlB1bGxSZXF1ZXN0NTE3NDA3MTM1
37,707
Bug in loc raised Error when non-integer slice was given for MultiIndex
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7
2020-11-09T01:05:41Z
2020-11-24T22:01:54Z
2020-11-24T21:59:58Z
MEMBER
null
- [x] closes #25165 - [x] closes #24263 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry A slice return caused issues everywhere, when this function was used. So I unpacked it right in there.
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37,708
BUG: Wrong index after monthly resampling
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2020-11-09T01:53:36Z
2020-11-09T02:54:31Z
2020-11-09T02:54:31Z
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null
- [X] I have checked that this issue has not already been reported. - [X] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Reproduce ```python df_sent = df_date.groupby('name').resample('M').count() ``` **df_date** ![image](https://user-images.githubusercontent.com/37740842/98491929-65bf7280-2247-11eb-8167-2a172d9f3e1e.png) **df_sent** ![image](https://user-images.githubusercontent.com/37740842/98491951-75d75200-2247-11eb-9be4-173f11f57707.png) #### Problem description When i resample my dataframe to month, it gives wrong index. As you can see my dataframe (__df_date__) has dates from __2020-06-13 10:23:00__ to __2020-09-11 00:22:00__ which has month **6** to **9** so if i resample to month, i expect new dataframe's months from __2020-06__ to __2020-09__. #### Expected Output ![image](https://user-images.githubusercontent.com/37740842/98492238-4aa13280-2248-11eb-88f3-bf472a1e9253.png) After resampling, new dataframe needs to has these months just like the above I have searched a solution to this unexpected behaviour and couldn't find anything. If i have wrong intuition about resampling, please correct me. Also i have encountered the same problem in [stackoverflow](https://stackoverflow.com/questions/52527619/wrong-index-after-monthly-resampling-of-dataframe-pandas) which hasn't got a solution #### Output of ``pd.show_versions()`` <details> pandas version= 1.1.3 INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.7.9.final.0 python-bits : 64 OS : Linux OS-release : 5.9.4-arch1-1 Version : #1 SMP PREEMPT Wed, 04 Nov 2020 21:41:09 +0000 machine : x86_64 processor : byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.3 numpy : 1.19.2 pytz : 2020.1 dateutil : 2.8.1 pip : 20.2.4 setuptools : 50.3.0.post20201006 Cython : 0.29.21 pytest : 6.1.1 hypothesis : None sphinx : 3.2.1 blosc : None feather : None xlsxwriter : 1.3.7 lxml.etree : 4.6.1 html5lib : 1.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.18.1 pandas_datareader: None bs4 : 4.9.3 bottleneck : 1.3.2 fsspec : 0.8.3 fastparquet : None gcsfs : None matplotlib : 3.3.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.5 pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.2 sqlalchemy : 1.3.20 tables : 3.6.1 tabulate : 0.8.7 xarray : None xlrd : 1.2.0 xlwt : 1.3.0 numba : 0.51.2 </details>
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QST: panda fillna SettingWithCopyWarning:
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2020-11-09T02:17:57Z
2021-02-28T13:00:47Z
2021-02-28T13:00:47Z
NONE
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- [x] I have searched the [[pandas] tag](https://stackoverflow.com/questions/tagged/pandas) on StackOverflow for similar questions. - [x] I have asked my usage related question on [StackOverflow](https://stackoverflow.com). --- #### Question about pandas I tried two different lines of code. Both of them gave me the desired outcome, which replaced the NANs by '0'. However, the first line did not give me settingwithcopy warning, the second one did. I am so confused. Can anyone tell me why? Is that because the X.loc[0:, 'Type'] returned a view and X.loc[:, 'Type'] returned a copy? If the second one returned a copy, why X's NANs have been replaced? **Note**: If you'd still like to submit a question, please read [this guide]( https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your question. ```python # Your code here, if applicable X.loc[0:, 'Type'].fillna('0', inplace=True) X.loc[:, 'Type'].fillna('0', inplace=True) ```
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REF: remove ObjectBlock._replace_single
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37,711
BUG: errors with `.loc[(slice(...), ), ]` when modifying a subset of rows in a pandas dataframe/series in 1.1.4
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4
2020-11-09T09:20:16Z
2020-11-15T03:36:03Z
2020-11-14T16:51:58Z
NONE
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I often use `.loc[(slice(...),),]` for selection and modifying when dealing with both series and dataframe: see [advanced-indexing-with-hierarchical-index](https://pandas.pydata.org/pandas-docs/stable/user_guide/advanced.html#advanced-indexing-with-hierarchical-index) > In [43]: df.loc['bar'] Out[43]: A B C second one 0.895717 0.410835 -1.413681 two 0.805244 0.813850 1.607920 > This is a shortcut for the slightly more verbose notation df.loc[('bar',),] (equivalent to df.loc['bar',] in this example). Every thinkg is OK in `0.25.4`, but in `1.1.4` (also `1.0.3` and `1.1.3`), only selection is valid and modifying will raise errors: ```python import pandas as pd s = pd.Series([1,2,3], index=pd.MultiIndex.from_tuples([('a','A'), ('b','B'), ('c', 'C')])) df = s.to_frame() print(s.loc[('a', ), ]) print(df.loc[('a', ), ]) ``` but when I try to modify a subset of rows using `.loc[(slice(...),),]` ```python In [2]: df.loc[('a', ), ] = 0 --------------------------------------------------------------------------- IndexError Traceback (most recent call last) <ipython-input-2-480fc1763dde> in <module> ----> 1 df.loc[('a', ), ] = 0 ~/opt/anaconda3/envs/edge/lib/python3.8/site-packages/pandas/core/indexing.py in __setitem__(self, key, value) 664 else: 665 key = com.apply_if_callable(key, self.obj) --> 666 indexer = self._get_setitem_indexer(key) 667 self._has_valid_setitem_indexer(key) 668 ~/opt/anaconda3/envs/edge/lib/python3.8/site-packages/pandas/core/indexing.py in _get_setitem_indexer(self, key) 591 """ 592 if self.name == "loc": --> 593 self._ensure_listlike_indexer(key) 594 595 if self.axis is not None: ~/opt/anaconda3/envs/edge/lib/python3.8/site-packages/pandas/core/indexing.py in _ensure_listlike_indexer(self, key, axis) 645 # key may be a tuple if we are .loc 646 # in that case, set key to the column part of key --> 647 key = key[column_axis] 648 axis = column_axis 649 IndexError: tuple index out of range ``` and ```python In [3]: s.loc[('a', ), ] = 0 --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) <ipython-input-3-c3a2e38a0417> in <module> ----> 1 s.loc[('a', ), ] = 0 ~/opt/anaconda3/envs/edge/lib/python3.8/site-packages/pandas/core/indexing.py in __setitem__(self, key, value) 668 669 iloc = self if self.name == "iloc" else self.obj.iloc --> 670 iloc._setitem_with_indexer(indexer, value) 671 672 def _validate_key(self, key, axis: int): ~/opt/anaconda3/envs/edge/lib/python3.8/site-packages/pandas/core/indexing.py in _setitem_with_indexer(self, indexer, value) 1633 if take_split_path: 1634 # Above we only set take_split_path to True for 2D cases -> 1635 assert self.ndim == 2 1636 assert info_axis == 1 1637 AssertionError: ``` Note that “partial” indexing `.loc[slice(...)]` is still valid in ``1.1.4`: ```python In [4]: df.loc['a'] = 0 In [5]: s.loc['a'] = 0 In [6]: df Out[6]: 0 a A 0 b B 2 c C 3 In [7]: s Out[7]: a A 0 b B 2 c C 3 dtype: int64 ``` Of course, `.loc[('a', )]` is valid for series and `.loc[('a', ), : ]` is vaild for dataframe, but I have to use different codes for series and dataframe. Update on 20201113: ----------------------- - For series, `s.loc[('a')] = 0`, `s.loc[('a', )] = 0` and `s.loc[('a'), ] = 0` are vaild, but `s.loc[('a', ), ] = 0` will raise similar AssertionError like above. - For dataframe, `df.loc[('a')] = 0`, `df.loc[('a'), :] = 0` and `df.loc[('a',), :] = 0` are vaild, but `df.loc[('a', )] = 0` , `df.loc[('a'), ] = 0` and `df.loc[('a', ), ] = 0` will raise similar IndexError like above.
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738,854,210
MDU6SXNzdWU3Mzg4NTQyMTA=
37,712
BUG: rolling covariance then dropping nans doesn't drop first level index which corresponds to those nans
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2020-11-09T09:28:04Z
2020-11-09T18:00:52Z
2020-11-09T18:00:52Z
NONE
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample ```python import numpy as np import pandas as pd df = pd.DataFrame(np.random.randn(10, 5)) df = df.rolling(5).cov().dropna() df.index.levels[0] ``` #### Current Output ```python Int64Index([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], dtype='int64') ``` #### Problem description Since doing a rolling covariance would cause the first 4 entries to the dataframe to be nan, which I dropped. However, if I try to access the first level of the index, I would get the full original index, being from 0 to 9. One would expect to receive an index for which the corresponding nan entries was removed for the new first level index. However, ```python df.index.get_level_values(0) ``` gives the expected output. #### Expected Output ```python Int64Index([4, 5, 6, 7, 8, 9], dtype='int64') ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.9.0.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.19041 machine : AMD64 processor : Intel64 Family 6 Model 158 Stepping 10, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : English_United States.1252 pandas : 1.1.4 numpy : 1.19.3 pytz : 2020.4 dateutil : 2.8.1 pip : 20.2.4 setuptools : 50.3.2 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : None IPython : 7.19.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.2 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : None </details>
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37,713
Backport PR #37657 on branch 1.1.x: BUG: unpickling modifies Block.ndim
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2020-11-09T11:19:25Z
2020-11-09T12:49:28Z
2020-11-09T12:49:09Z
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Backport PR #37657
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CLN: cleanup, deduplicate plotting/test_frame
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1
2020-11-09T12:23:17Z
2020-11-10T04:44:38Z
2020-11-09T18:57:51Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry 1. Make more reasonable var names 2. Get rid of one test in favor of parametrization in another one
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https://api.github.com/repos/pandas-dev/pandas/issues/37715
https://api.github.com/repos/pandas-dev/pandas
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https://github.com/pandas-dev/pandas/issues/37715
739,014,311
MDU6SXNzdWU3MzkwMTQzMTE=
37,715
TYP: investigate/fix ignored mypy errors
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19
2020-11-09T13:08:21Z
2021-11-08T18:03:32Z
null
MEMBER
null
In #37556 `# type: ignore` were added to silence mypy errors to be fixed 'later'. If an ignore is needed due to a error with the type checker, a comment with a reference to the mypy issue on the github mypy issue tracker should be included. Further investigation or PRs welcome removing these ignores or adding comments with links to mypy issues if applicable. PRs should include 'xref #37715' PRs could address just one error, a small handful of related errors or a complete module. `grep -Ern "type: ?ignore" pandas/` currently gives 207 matches <details> ``` pandas/tests/internals/test_internals.py:1258: assert df._mgr.blocks[0].values is arr # type:ignore[union-attr] pandas/tests/indexes/object/test_indexing.py:73: (pd.IndexSlice["b":"y":-1], ""), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:74: (pd.IndexSlice["b"::-1], "b"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:75: (pd.IndexSlice[:"b":-1], "yxdcb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:76: (pd.IndexSlice[:"y":-1], "y"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:77: (pd.IndexSlice["y"::-1], "yxdcb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:78: (pd.IndexSlice["y"::-4], "yb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:80: (pd.IndexSlice[:"a":-1], "yxdcb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:81: (pd.IndexSlice[:"a":-2], "ydb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:82: (pd.IndexSlice["z"::-1], "yxdcb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:83: (pd.IndexSlice["z"::-3], "yc"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:84: (pd.IndexSlice["m"::-1], "dcb"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:85: (pd.IndexSlice[:"m":-1], "yx"), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:86: (pd.IndexSlice["a":"a":-1], ""), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:87: (pd.IndexSlice["z":"z":-1], ""), # type: ignore[misc] pandas/tests/indexes/object/test_indexing.py:88: (pd.IndexSlice["m":"m":-1], ""), # type: ignore[misc] pandas/tests/frame/indexing/test_setitem.py:229: + ["datetime64[ns, UTC]", "period[D]"], # type: ignore[list-item] pandas/tests/io/xml/test_xml.py:683: filename, names="Col1, Col2, Col3", parser=parser # type: ignore[arg-type] pandas/conftest.py:330: params=[pd.Index, pd.Series], ids=["index", "series"] # type: ignore[list-item] pandas/_testing/_io.py:98: args = [] # type: ignore[assignment] pandas/_testing/_io.py:219: errno = getattr(err.reason, "errno", None) # type: ignore[attr-defined] pandas/_testing/__init__.py:574: idx = idx_func(nentries) # type: ignore[operator] pandas/util/_decorators.py:93: return wrapper # type: ignore[return-value] pandas/util/_decorators.py:341: func.__signature__ = sig # type: ignore[attr-defined] pandas/util/_decorators.py:380: docstring._docstring_components # type: ignore[union-attr] pandas/util/_decorators.py:396: decorated._docstring_components = ( # type: ignore[attr-defined] pandas/core/generic.py:755: new_values, *new_axes # type: ignore[arg-type] pandas/core/generic.py:4344: return self.rename(**mapper) # type: ignore[return-value, arg-type] pandas/core/generic.py:4408: return self.rename(**mapper) # type: ignore[return-value, arg-type] pandas/core/generic.py:10600: cls.any = any # type: ignore[assignment] pandas/core/generic.py:10620: cls.all = all # type: ignore[assignment] pandas/core/generic.py:10625: NDFrame.mad.__doc__, # type: ignore[arg-type] pandas/core/generic.py:10638: cls.mad = mad # type: ignore[assignment] pandas/core/generic.py:10661: cls.sem = sem # type: ignore[assignment] pandas/core/generic.py:10683: cls.var = var # type: ignore[assignment] pandas/core/generic.py:10706: cls.std = std # type: ignore[assignment] pandas/core/generic.py:10721: cls.cummin = cummin # type: ignore[assignment] pandas/core/generic.py:10736: cls.cummax = cummax # type: ignore[assignment] pandas/core/generic.py:10751: cls.cumsum = cumsum # type: ignore[assignment] pandas/core/generic.py:10766: cls.cumprod = cumprod # type: ignore[assignment] pandas/core/generic.py:10793: cls.sum = sum # type: ignore[assignment] pandas/core/generic.py:10819: cls.prod = prod # type: ignore[assignment] pandas/core/generic.py:10836: cls.mean = mean # type: ignore[assignment] pandas/core/generic.py:10852: cls.skew = skew # type: ignore[assignment] pandas/core/generic.py:10871: cls.kurt = kurt # type: ignore[assignment] pandas/core/generic.py:10890: cls.median = median # type: ignore[assignment] pandas/core/generic.py:10908: cls.max = max # type: ignore[assignment] pandas/core/generic.py:10926: cls.min = min # type: ignore[assignment] pandas/core/generic.py:11049: return self._inplace_method(other, type(self).__add__) # type: ignore[operator] pandas/core/generic.py:11052: return self._inplace_method(other, type(self).__sub__) # type: ignore[operator] pandas/core/generic.py:11055: return self._inplace_method(other, type(self).__mul__) # type: ignore[operator] pandas/core/generic.py:11059: other, type(self).__truediv__ # type: ignore[operator] pandas/core/generic.py:11064: other, type(self).__floordiv__ # type: ignore[operator] pandas/core/generic.py:11068: return self._inplace_method(other, type(self).__mod__) # type: ignore[operator] pandas/core/generic.py:11071: return self._inplace_method(other, type(self).__pow__) # type: ignore[operator] pandas/core/generic.py:11074: return self._inplace_method(other, type(self).__and__) # type: ignore[operator] pandas/core/generic.py:11077: return self._inplace_method(other, type(self).__or__) # type: ignore[operator] pandas/core/generic.py:11080: return self._inplace_method(other, type(self).__xor__) # type: ignore[operator] pandas/core/dtypes/generic.py:43: @classmethod # type: ignore[misc] pandas/core/dtypes/common.py:160: return arr.astype("int64", copy=copy, casting="safe") # type: ignore[call-arg] pandas/core/dtypes/common.py:165: return arr.astype("uint64", copy=copy, casting="safe") # type: ignore[call-arg] pandas/core/dtypes/cast.py:588: dtype, fill_value, type(fill_value) # type: ignore[arg-type] pandas/core/dtypes/dtypes.py:680: unit, tz = unit.unit, unit.tz # type: ignore[attr-defined] pandas/core/arrays/datetimelike.py:539: other = self._scalar_type(other) # type: ignore[call-arg] pandas/core/arrays/datetimelike.py:590: fill_value = self._scalar_type(fill_value) # type: ignore[call-arg] pandas/core/arrays/datetimelike.py:598: new_fill = self._scalar_type(fill_value) # type: ignore[call-arg] pandas/core/arrays/datetimelike.py:660: value = self._scalar_type(value) # type: ignore[call-arg] pandas/core/arrays/datetimelike.py:953: return self._resolution_obj.attrname # type: ignore[union-attr] pandas/core/arrays/datetimelike.py:1777: uniques = uniques[::-1] # type: ignore[assignment] pandas/core/arrays/string_.py:213: self._dtype = StringDtype() # type: ignore[assignment] pandas/core/arrays/period.py:326: @property # type: ignore[misc] pandas/core/arrays/boolean.py:81: def type(self) -> Type: # type: ignore[override] pandas/core/arrays/interval.py:1350: @property # type: ignore[misc] pandas/core/arrays/interval.py:1572: left = self._combined.view("complex128") # type:ignore[attr-defined] pandas/core/arrays/floating.py:81: [t.numpy_dtype for t in dtypes], [] # type: ignore[union-attr] pandas/core/internals/array_manager.py:151: def axes(self) -> List[Index]: # type: ignore[override] pandas/core/internals/array_manager.py:457: if hasattr(arr, "tz") and arr.tz is None: # type: ignore[union-attr] pandas/core/internals/array_manager.py:459: arr = arr._data # type: ignore[union-attr] pandas/core/internals/array_manager.py:462: arr = arr._data # type: ignore[union-attr] pandas/core/series.py:669: @Appender(base.IndexOpsMixin.array.__doc__) # type: ignore[misc] pandas/core/series.py:1097: self._mgr = self._mgr.setitem( # type: ignore[assignment] pandas/core/apply.py:563: new_func[k] = [v] # type:ignore[list-item] pandas/core/nanops.py:1751: result = type(values)._simple_new( # type: ignore[attr-defined] pandas/core/groupby/categorical.py:108: return ci.set_categories(c.categories) # type: ignore[attr-defined] pandas/core/groupby/categorical.py:113: return ci.add_categories(new_cats) # type: ignore[attr-defined] pandas/core/groupby/base.py:60: subset = self.obj # type: ignore[attr-defined] pandas/core/groupby/base.py:69: groupby = self._groupby[key] # type: ignore[attr-defined] pandas/core/groupby/base.py:72: groupby = self._groupby # type: ignore[attr-defined] pandas/core/groupby/base.py:78: subset, groupby=groupby, parent=self, **kwargs # type: ignore[call-arg] pandas/core/groupby/grouper.py:306: self.grouper, _, self.obj = get_grouper( # type: ignore[type-var] pandas/core/groupby/grouper.py:393: return self.grouper.groups # type: ignore[union-attr] pandas/core/indexes/datetimelike.py:85: @staticmethod # type: ignore[misc] pandas/core/indexes/datetimelike.py:131: DatetimeLikeArrayMixin._hasnans.fget # type: ignore[attr-defined] pandas/core/indexes/period.py:193: @property # type:ignore[misc] pandas/core/indexes/period.py:200: @property # type:ignore[misc] pandas/core/indexes/period.py:207: @property # type:ignore[misc] pandas/core/indexes/category.py:347: ("ordered", self.ordered), # type: ignore[attr-defined] pandas/core/indexes/base.py:6174: name = index_like.name # type: ignore[union-attr, attr-defined] pandas/core/indexes/frozen.py:107: __setitem__ = __setslice__ = _disabled # type: ignore[assignment] pandas/core/indexes/frozen.py:108: __delitem__ = __delslice__ = _disabled # type: ignore[assignment] pandas/core/indexes/frozen.py:109: pop = append = extend = _disabled # type: ignore[assignment] pandas/core/indexes/frozen.py:110: remove = sort = insert = _disabled # type: ignore[assignment] pandas/core/indexes/multi.py:1479: self._names[lev] = name # type: ignore[has-type] pandas/core/common.py:497: return values # type: ignore[return-value] pandas/core/reshape/merge.py:1028: join_names = [] # type: ignore[var-annotated] pandas/core/ops/array_ops.py:372: res_values = filler(res_values) # type: ignore[operator] pandas/core/base.py:118: mem = self.memory_usage(deep=True) # type: ignore[attr-defined] pandas/core/base.py:229: self.obj, ABCSeries # type: ignore[attr-defined] pandas/core/base.py:232: return self.obj # type: ignore[attr-defined] pandas/core/base.py:235: return self.obj[self._selection] # type: ignore[attr-defined] pandas/core/base.py:245: self.obj, ABCDataFrame # type: ignore[attr-defined] pandas/core/base.py:248: return self.obj.reindex( # type: ignore[attr-defined] pandas/core/base.py:253: if len(self.exclusions) > 0: # type: ignore[attr-defined] pandas/core/base.py:256: return self.obj.drop(self.exclusions, axis=1) # type: ignore[attr-defined] pandas/core/base.py:259: return self.obj # type: ignore[attr-defined] pandas/core/base.py:268: self.obj.columns.intersection(key) # type: ignore[attr-defined] pandas/core/base.py:272: set(key).difference(self.obj.columns) # type: ignore[attr-defined] pandas/core/base.py:279: if key not in self.obj.columns: # type: ignore[attr-defined] pandas/core/base.py:285: if key not in self.obj: # type: ignore[attr-defined] pandas/core/base.py:611: return self.array.to_numpy( # type: ignore[call-arg] pandas/core/base.py:924: self = cast("Categorical", self) # type: ignore[assignment] pandas/core/base.py:927: return self._values.map(mapper) # type: ignore[union-attr] pandas/core/base.py:945: values = self.astype(object)._values # type: ignore[attr-defined] pandas/core/base.py:1183: return self.array.memory_usage(deep=deep) # type: ignore[attr-defined] pandas/core/base.py:1318: return self[~duplicated] # type: ignore[index] pandas/core/frame.py:1219: itertuple = collections.namedtuple( # type: ignore[misc] pandas/core/frame.py:1236: def dot(self, other: Series) -> Series: # type: ignore[misc] pandas/core/frame.py:2339: from pandas.io.stata import ( # type: ignore[no-redef] pandas/core/frame.py:2344: from pandas.io.stata import ( # type: ignore[no-redef] pandas/core/frame.py:2357: writer = statawriter( # type: ignore[call-arg] pandas/core/frame.py:4082: unique_dtype.type, tuple(dtypes_set) # type: ignore[arg-type] pandas/core/frame.py:5100: arrays.append(col) # type:ignore[arg-type] pandas/core/frame.py:5144: def reset_index( # type: ignore[misc] pandas/core/frame.py:5783: def sort_values( # type: ignore[override] pandas/core/frame.py:6385: right._mgr, array_op # type: ignore[arg-type] pandas/core/resample.py:142: self.grouper = None # type: ignore[assignment] pandas/core/resample.py:465: self.loffset, # type: ignore[has-type] pandas/core/resample.py:474: result.index = result.index + self.loffset # type: ignore[has-type] pandas/core/resample.py:911: return self._downsample("std", ddof=ddof) # type: ignore[call-arg] pandas/core/resample.py:929: return self._downsample("var", ddof=ddof) # type: ignore[call-arg] pandas/core/resample.py:989: return self._downsample("quantile", q=q, **kwargs) # type: ignore[call-arg] pandas/core/resample.py:1042: super().__init__(None) # type: ignore[call-arg] pandas/core/resample.py:1109: and len(self.grouper.binlabels) > len(ax) # type: ignore[attr-defined] pandas/core/config_init.py:332: ip = get_ipython() # type: ignore[name-defined] pandas/core/computation/pytables.py:88: @property # type: ignore[misc] pandas/core/computation/ops.py:89: supr_new = super(Term, klass).__new__ # type: ignore[misc] pandas/core/computation/ops.py:610: operands = [op(env) for op in self.operands] # type: ignore[operator] pandas/core/computation/expr.py:677: f"Invalid function call {node.func.id}" # type: ignore[attr-defined] pandas/core/computation/expr.py:701: "keyword error in function call " # type: ignore[attr-defined] pandas/core/computation/expressions.py:241: return _evaluate(op, op_str, a, b) # type: ignore[misc] pandas/core/computation/scope.py:136: self.scope = self.scope.new_child( # type: ignore[assignment] pandas/core/computation/scope.py:142: self.scope = self.scope.new_child( # type: ignore[assignment] pandas/core/computation/scope.py:151: resolvers += tuple(local_dict.resolvers.maps) # type: ignore[has-type] pandas/core/computation/scope.py:239: mapping[new_key] = new_value # type: ignore[index] pandas/core/computation/scope.py:260: self.scope = self.scope.new_child(d) # type: ignore[assignment] pandas/core/computation/scope.py:333: + self.resolvers.maps # type: ignore[operator] pandas/core/computation/scope.py:334: + self.scope.maps # type: ignore[operator] pandas/compat/pickle_compat.py:74: def __new__(cls) -> Series: # type: ignore[misc] pandas/compat/pickle_compat.py:92: def __new__(cls) -> DataFrame: # type: ignore[misc] pandas/compat/pickle_compat.py:191:class Unpickler(pkl._Unpickler): # type: ignore[name-defined] pandas/plotting/_matplotlib/core.py:608: self.legend_handles = reversed( # type: ignore[assignment] pandas/plotting/_matplotlib/core.py:614: self.legend_labels = reversed( # type: ignore[assignment] pandas/plotting/_matplotlib/core.py:708: args = (x, y) # type: ignore[assignment] pandas/plotting/_matplotlib/core.py:1161: plotf = self._plot # type: ignore[assignment] pandas/plotting/_matplotlib/core.py:1611: blabels = None # type: ignore[assignment] pandas/plotting/_matplotlib/timeseries.py:68: series.index = series.index.asfreq( # type: ignore[attr-defined] pandas/plotting/_matplotlib/timeseries.py:248: weekdays = np.unique(index.dayofweek) # type: ignore[attr-defined] pandas/plotting/_misc.py:534: self.__init__() # type: ignore[misc] pandas/io/formats/excel.py:632: gen2 = ( # type: ignore[assignment] pandas/io/formats/excel.py:838: writer = ExcelWriter( # type: ignore[abstract] pandas/io/formats/printing.py:507: return head, tail # type: ignore[return-value] pandas/io/formats/printing.py:532: attrs.append(("dtype", f"'{obj.dtype}'")) # type: ignore[attr-defined] pandas/io/formats/printing.py:535: attrs.append(("name", default_pprint(obj.name))) # type: ignore[attr-defined] pandas/io/formats/printing.py:538: obj.names # type: ignore[attr-defined] pandas/io/formats/printing.py:541: attrs.append(("names", default_pprint(obj.names))) # type: ignore[attr-defined] pandas/io/formats/console.py:73: return __IPYTHON__ or check_main() # type: ignore[name-defined] pandas/io/formats/console.py:88: ip = get_ipython() # type: ignore[name-defined] pandas/io/formats/style.py:1847: class MyStyler(cls): # type:ignore[valid-type,misc] pandas/io/formats/csvs.py:252: handles.handle, # type: ignore[arg-type] pandas/io/formats/xml.py:278: handles.handle.write(xml_doc) # type: ignore[arg-type] pandas/io/formats/format.py:1384: float_format(value=v) # type: ignore[operator,call-arg] pandas/io/pytables.py:2362: itemsize = dtype.itemsize # type: ignore[attr-defined] pandas/io/pytables.py:3440: return dict(d1 + d2 + d3) # type: ignore[operator] pandas/io/pytables.py:4025: blocks = list(mgr.blocks) # type: ignore[union-attr] pandas/io/pytables.py:4029: blocks.extend(mgr.blocks) # type: ignore[union-attr] pandas/io/pickle.py:107: pickle.dumps(obj, protocol=protocol) # type: ignore[arg-type] pandas/io/pickle.py:112: obj, handles.handle, protocol=protocol # type: ignore[arg-type] pandas/io/pickle.py:207: return pickle.load(handles.handle) # type: ignore[arg-type] pandas/io/excel/_base.py:927: for extension in cls.supported_extensions # type: ignore[attr-defined] pandas/io/excel/_base.py:1003: zf = zipfile.ZipFile(stream) # type: ignore[arg-type] pandas/io/stata.py:914: self.TYPE_MAP = list(range(251)) + list("bhlfd") # type: ignore[arg-type] pandas/io/stata.py:1094: self.path_or_buf = BytesIO(handles.handle.read()) # type: ignore[arg-type] pandas/io/stata.py:2211: to_write.encode(self._encoding) # type: ignore[arg-type] pandas/io/stata.py:2218: self.handles.handle.write(value) # type: ignore[arg-type] pandas/io/stata.py:2542: self.handles.handle.write(bio.getvalue()) # type: ignore[arg-type] pandas/io/json/_json.py:1045: ) # type:ignore[misc] pandas/io/common.py:518: ) # type: ignore[operator] pandas/io/common.py:628: fileobj=handle, # type: ignore[arg-type] pandas/io/common.py:636: handle, # type: ignore[arg-type] pandas/io/common.py:693: handle, # type: ignore[arg-type] pandas/io/common.py:731:class _BytesZipFile(zipfile.ZipFile, BytesIO): # type: ignore[misc] pandas/io/common.py:755: super().__init__(file, mode, **kwargs_zip) # type: ignore[arg-type] pandas/io/common.py:852: wrapped = cast(mmap.mmap, _MMapWrapper(handle)) # type: ignore[arg-type] pandas/io/parsers/c_parser_wrapper.py:48: self.handles.handle = self.handles.handle.mmap # type: ignore[union-attr] pandas/io/parsers/readers.py:976: return mapping[engine](self.f, **self.options) # type: ignore[call-arg] pandas/io/parsers/python_parser.py:243: self.data = reader # type: ignore[assignment] pandas/io/parsers/python_parser.py:301: size = self.chunksize # type: ignore[attr-defined] ``` </details>
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https://api.github.com/repos/pandas-dev/pandas/issues/37716
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739,049,252
MDU6SXNzdWU3MzkwNDkyNTI=
37,716
df.melt() overwriting column named 'variable'
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6
2020-11-09T13:55:23Z
2020-11-12T10:26:53Z
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when melting df using a column named 'variable' as an id_var. resultant frame has original 'variable' column overwritten with the newly melted 'variable' column. would suggest checking for presence of 'variable' column and appending '_i' to newly created columns. [example_melt_overwrite.zip](https://github.com/pandas-dev/pandas/files/5510886/example_melt_overwrite.zip) foo = pd.read_pickle('example_melt_overwrite.pkl') foo.melt(id_vars=['DateTime','variable'])
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739,058,481
MDExOlB1bGxSZXF1ZXN0NTE3Nzg5MTMz
37,717
TST: move and reformat latex_na_rep test
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1
2020-11-09T14:07:30Z
2020-11-10T04:44:18Z
2020-11-09T18:56:08Z
MEMBER
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Move test to a more suitable location (``class TestToLatexFormatters``) and reformat using ``_dedent`` and raw string for better readability.
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739,069,714
MDExOlB1bGxSZXF1ZXN0NTE3Nzk4MjQ5
37,718
TST: improve readability using dedent in test_to_string.py
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2
2020-11-09T14:21:22Z
2020-11-10T04:43:51Z
2020-11-09T18:57:10Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Improve readability of expected outputs using dedent in ``pandas/tests/io/formats/test_to_string.py``
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