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https://api.github.com/repos/pandas-dev/pandas/issues/31515
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558,331,201
MDExOlB1bGxSZXF1ZXN0MzY5NzM5NjMw
31,515
REGR: DataFrame.__setitem__(slice, val) is positional
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4
2020-01-31T19:36:38Z
2020-02-05T12:34:52Z
2020-02-01T14:22:06Z
MEMBER
null
- [x] closes #31469 - [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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558,334,721
MDU6SXNzdWU1NTgzMzQ3MjE=
31,516
query works for string data type columns with missing values but not for boolean indexing
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2020-01-31T19:43:18Z
2020-04-26T21:13:34Z
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CONTRIBUTOR
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#### Code Sample, a copy-pastable example if possible ```python >>> df = pd.DataFrame({'a': ['asdf', None]}, dtype='string') >>> df.query('a == "asdf"') # works >>> df[df['a'] == 'asdf'] # fails >>> df.query('a <= "asdf"') # fails --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-24-1d73f7d1a2fe> in <module> ----> 1 df[df['a'] == 'asdf'] ~/Documents/Code Practice/pandas-dev/pandas/pandas/core/frame.py in __getitem__(self, key) 2784 2785 # Do we have a (boolean) 1d indexer? -> 2786 if com.is_bool_indexer(key): 2787 return self._getitem_bool_array(key) 2788 ~/Documents/Code Practice/pandas-dev/pandas/pandas/core/common.py in is_bool_indexer(key) 132 if is_extension_array_dtype(key.dtype): 133 if np.any(key.isna()): --> 134 raise ValueError(na_msg) 135 return True 136 elif isinstance(key, list): ValueError: cannot mask with array containing NA / NaN values ``` #### Problem description This is a specific bug found from discussion in #31503. The new string data type should fail for any `query` call where there are missing values in the evaluated condition. It correctly fails for boolean indexing and for inequality conditions in `query` #### Expected Output `df.query('a == "asdf"')` should fail #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.8.1.final.0 python-bits : 64 OS : Darwin OS-release : 19.2.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 0+untagged.1.gce8af21.dirty numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 45.1.0.post20200127 Cython : 0.29.14 pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.11.1 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.1.1 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.3.1 sqlalchemy : 1.3.13 tables : None tabulate : 0.8.3 xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None </details>
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MDU6SXNzdWU1NTgzMzQ5NDY=
31,517
pd.DataFrame.replace doesn't work after converting to new dtypes in 1.0.0
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3
2020-01-31T19:43:47Z
2021-05-06T09:13:19Z
2020-02-01T23:10:40Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd pd.show_versions() df = pd.DataFrame({'grp':[1,2,3,4,5]}) df = df.convert_dtypes() df.replace(1,10) ``` #### Problem description pd.DataFrame.replace is not working after using pd.DataFrame.convert_dtypes. Stack trace: ``` --------------------------------------------------------------------------- IndexError Traceback (most recent call last) <ipython-input-9-fb2a3a449007> in <module> 3 df = pd.DataFrame({'grp':[1,2,3,4,5]}) 4 df = df.convert_dtypes() ----> 5 df.replace(1,10) ~/anaconda3/lib/python3.6/site-packages/pandas/core/frame.py in replace(self, to_replace, value, inplace, limit, regex, method) 4167 limit=limit, 4168 regex=regex, -> 4169 method=method, 4170 ) 4171 ~/anaconda3/lib/python3.6/site-packages/pandas/core/generic.py in replace(self, to_replace, value, inplace, limit, regex, method) 6735 elif not is_list_like(value): # NA -> 0 6736 new_data = self._data.replace( -> 6737 to_replace=to_replace, value=value, inplace=inplace, regex=regex 6738 ) 6739 else: ~/anaconda3/lib/python3.6/site-packages/pandas/core/internals/managers.py in replace(self, value, **kwargs) 587 def replace(self, value, **kwargs): 588 assert np.ndim(value) == 0, value --> 589 return self.apply("replace", value=value, **kwargs) 590 591 def replace_list(self, src_list, dest_list, inplace=False, regex=False): ~/anaconda3/lib/python3.6/site-packages/pandas/core/internals/managers.py in apply(self, f, filter, **kwargs) 440 applied = b.apply(f, **kwargs) 441 else: --> 442 applied = getattr(b, f)(**kwargs) 443 result_blocks = _extend_blocks(applied, result_blocks) 444 ~/anaconda3/lib/python3.6/site-packages/pandas/core/internals/blocks.py in replace(self, to_replace, value, inplace, filter, regex, convert) 769 770 try: --> 771 blocks = self.putmask(mask, value, inplace=inplace) 772 # Note: it is _not_ the case that self._can_hold_element(value) 773 # is always true at this point. In particular, that can fail ~/anaconda3/lib/python3.6/site-packages/pandas/core/internals/blocks.py in putmask(self, mask, new, align, inplace, axis, transpose) 1671 mask = _safe_reshape(mask, new_values.shape) 1672 -> 1673 new_values[mask] = new 1674 return [self.make_block(values=new_values)] 1675 ~/anaconda3/lib/python3.6/site-packages/pandas/core/arrays/integer.py in __setitem__(self, key, value) 415 mask = mask[0] 416 --> 417 self._data[key] = value 418 self._mask[key] = mask 419 IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices​ ``` #### Expected Output Should work just like it does before using pd.DataFrame.convert_dtypes. ```import pandas as pd #pd.show_versions() df = pd.DataFrame({'grp':[1,2,3,4,5]}) #df = df.convert_dtypes() df.replace(1,10)``` Output: ``` | | grp | |---:|------:| | 0 | 10 | | 1 | 2 | | 2 | 3 | | 3 | 4 | | 4 | 5 | ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.6.9.final.0 python-bits : 64 OS : Linux OS-release : 4.15.0-76-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.0 numpy : 1.16.4 pytz : 2019.2 dateutil : 2.8.0 pip : 20.0.1 setuptools : 45.1.0 Cython : 0.29 pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.4.1 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.1 IPython : 7.8.0 pandas_datareader: None bs4 : 4.8.1 bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.4.1 matplotlib : 2.2.3 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.2.1 sqlalchemy : 1.3.9 tables : None tabulate : 0.8.6 xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None ​ </details>
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TYP: Arraylike
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2020-01-31T20:36:09Z
2020-02-01T16:44:33Z
2020-02-01T16:44:21Z
MEMBER
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@simonjayhawkins mypy doesn't like this ``` $ mypy pandas pandas/core/base.py:679: error: "ArrayLike" has no attribute "nbytes" pandas/core/indexes/base.py:246: error: Type variable "pandas._typing.ArrayLike" is unbound pandas/core/indexes/base.py:246: note: (Hint: Use "Generic[ArrayLike]" or "Protocol[ArrayLike]" base class to bind "ArrayLike" inside a class) pandas/core/indexes/base.py:246: note: (Hint: Use "ArrayLike" in function signature to bind "ArrayLike" inside a function) pandas/core/indexes/base.py:1152: error: "ArrayLike" has no attribute "copy" pandas/core/indexes/base.py:3881: error: ArrayLike? has no attribute "view" pandas/core/series.py:252: error: "ArrayLike" has no attribute "copy" pandas/io/pytables.py:2240: error: "ExtensionDtype" has no attribute "itemsize" pandas/io/pytables.py:2245: error: "ExtensionArray" has no attribute "size" pandas/io/pytables.py:2248: error: "ExtensionArray" has no attribute "codes" pandas/io/pytables.py:4985: error: "ExtensionArray" has no attribute "codes" ``` Is this a product of ArrayLike being a TypeVar instead of a Union? At least the last two look like they need to be Categorical instead of ExtensionArray, not sure about the others.
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558,374,173
MDExOlB1bGxSZXF1ZXN0MzY5NzcyMTgw
31,519
REF: simplify DTI._parse_string_to_bounds
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1
2020-01-31T21:09:53Z
2020-04-05T17:34:10Z
2020-02-05T01:46:22Z
MEMBER
null
Sits on top of #31475. i.e. once that is merged, the only diff remaining here will be in indexes.datetimes. After this, we are within striking distance of sharing the method between DTI/PI.
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MDExOlB1bGxSZXF1ZXN0MzY5NzgzODE2
31,520
REGR: to_datetime, unique with OOB values
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0
2020-01-31T21:45:02Z
2020-02-01T14:29:37Z
2020-02-01T14:29:37Z
CONTRIBUTOR
null
Closes https://github.com/pandas-dev/pandas/issues/31491 This turned up two bugs: 1. `to_datetime(oob_values, cache=True, errors='coerce')` would raise. We had tests intended to catch this, but we didn't actually hit it because caching is disabled for inputs less than length 50. We only tested with length 3. I've updated the test to pass that threshold 2. The original report, that `to_datetime` was raising for non-ns resolution values that aren't OOB for ns resolution. This was a bug in `unique`.
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31,521
REGR: Fixed slicing DatetimeIndex with date
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7
2020-01-31T22:10:44Z
2020-02-03T16:49:38Z
2020-02-01T14:56:13Z
CONTRIBUTOR
null
Closes https://github.com/pandas-dev/pandas/issues/31501
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31,522
AssertionError when grouping with max/min as aggregation functions (pandas-1.0.0)
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12
2020-01-31T22:44:03Z
2020-08-13T18:02:48Z
2020-02-05T14:55:26Z
NONE
null
#### Code Sample ```python import pandas as pd import numpy as np df = pd.DataFrame({'key1' : ['a', 'a', 'b', 'b', 'a'], 'key2' : ['one', 'two', 'one', 'two', 'one'], 'key3' : ['three', 'three', 'three', 'six', 'six'], 'data1' : np.random.randn(5), 'data2' : np.random.randn(5)}) df.groupby('key1').min() ``` #### Problem description Since `pandas-1.0.0`, an `AssertionError` is thrown when grouping a `DataFrame` by a key and using `max`/`min` as aggregation functions. It works fine if only 1 key (other than the grouping key) is of the type `object` in the DataFrame, but it doesn't when the number of keys of type `object` is bigger than 1 (as shown in the example). This configuration worked fine on previous versions of `pandas` (e.g., `pandas-0.25.3`). #### Expected Output | key1 | key2 | key3 | data1 | data2 | |:-------|:-------|:-------|---------:|----------:| | a | one | six | -0.67246 | -1.6302 | | b | one | six | -1.72628 | -0.907298 | #### Output of ``pd.show_versions()`` commit : None python : 3.7.6.final.0 python-bits : 64 OS : Darwin OS-release : 19.2.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : None.UTF-8 pandas : 1.0.0 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 45.1.0.post20200127 Cython : 0.29.14 pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.11.1 pandas_datareader: None bs4 : None bottleneck : 1.3.1 fastparquet : None gcsfs : None lxml.etree : None matplotlib : 3.1.2 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.3.1 sqlalchemy : None tables : None tabulate : 0.8.3 xarray : None xlrd : None xlwt : None xlsxwriter : None numba : 0.48.0
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558,420,201
MDU6SXNzdWU1NTg0MjAyMDE=
31,523
RLS: 1.0.1
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9
2020-01-31T23:04:58Z
2020-04-05T10:45:23Z
2020-04-05T10:45:22Z
CONTRIBUTOR
null
A decent number of regressions have been reported on 1.0.0. I think we should target 1.0.1 for sometime early next week. Perhaps on Tuesday, depending on how much progress we make on the regressions. cc @pandas-dev/pandas-core. make sure these are [backported]( https://github.com/pandas-dev/pandas/pulls?q=is%3Apr+label%3A%22Still+Needs+Manual+Backport%22)
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558,422,997
MDExOlB1bGxSZXF1ZXN0MzY5ODA5MDI2
31,524
BUG: non-iterable value in meta raise error in json_normalize
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23
2020-01-31T23:14:26Z
2020-03-11T15:02:43Z
2020-03-11T15:02:32Z
MEMBER
null
- [x] closes #31507 - [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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31,525
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5
2020-01-31T23:59:19Z
2020-04-07T14:43:02Z
2020-02-02T19:32:23Z
MEMBER
null
I *think* we pinned this originally because of issues with 3.0.2 specifically, but looks like a newer version is available on conda ref #30009
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DOC: 10 minutes - <TAB> completion section showing inconsistent suggestions
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5
2020-02-01T02:05:43Z
2020-02-09T17:23:54Z
2020-02-09T17:23:54Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible From the very end of the section "[Object Creation](https://pandas.pydata.org/pandas-docs/stable/getting_started/10min.html#object-creation)" ```python In [12]: df2.<TAB> # noqa: E225, E999 df2.A df2.bool df2.abs df2.boxplot df2.add df2.C df2.add_prefix df2.clip df2.add_suffix df2.clip_lower df2.align df2.clip_upper df2.all df2.columns df2.any df2.combine df2.append df2.combine_first df2.apply df2.consolidate df2.applymap df2.D ``` And the following text: ```rst As you can see, the columns ``A``, ``B``, ``C``, and ``D`` are automatically tab completed. ``E`` is there as well; the rest of the attributes have been truncated for brevity. ``` #### Problem description In the text we read that columns `A`, `B`, `C` and `D` are shown. However, `df2.B` isn't shown at all #### Expected Output I think we could just add some more <TAB> completions, along side `df2.B` to make the documentation more consistent to what is being said. Something similar to: ```python In [12]: df2.<TAB> # noqa: E225, E999 df2.A df2.bool df2.abs df2.boxplot df2.add df2.C df2.add_prefix df2.clip df2.add_suffix df2.columns df2.align df2.combine df2.all df2.combine_first df2.any df2.D df2.append df2.describe df2.apply df2.diff df2.applymap df2.div df2.B df2.divide ``` ##### Note I'd like to know what does `# noqa: E225, E999` means. I didn't see this reference early in this guide
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CLN: libperiod
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1
2020-02-01T03:04:35Z
2020-02-01T23:34:49Z
2020-02-01T23:23:06Z
MEMBER
null
separating cleanups from non-cleanup branches
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MDExOlB1bGxSZXF1ZXN0MzY5ODQ3MDg1
31,528
REGR: Categorical with np.str_ categories
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2020-02-01T03:40:31Z
2020-02-04T16:31:28Z
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MEMBER
null
- [x] closes #31499 - [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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BUG: Series multiplication with timedelta scalar numexpr path
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2020-02-01T03:58:14Z
2020-02-01T16:10:25Z
2020-02-01T15:24:45Z
MEMBER
null
- [x] closes #31457 - [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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31,530
`style` settings overwrite all `display` settings
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2
2020-02-01T09:56:43Z
2021-07-27T05:45:10Z
2021-07-27T05:45:10Z
NONE
null
The following code reproduces the issue: ```python import pandas as pd from IPython.display import display pd.options.display.float_format = "{:,.1f}".format df = pd.DataFrame([1000.1234, 2000.1234]) display(df) display(df.style.hide_index()) ``` Output: ![image](https://user-images.githubusercontent.com/8380499/73590262-c1064c80-44e0-11ea-90b8-aca4c55d243c.png) IMHO `style.hide_index()` should not overwrite the previous `display.float_format` setting, only `style.format` should do it.
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31,531
DOC issue of rendering for the docsting of pd.set_option
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1
2020-02-01T10:14:13Z
2020-02-01T13:46:17Z
2020-02-01T13:46:17Z
CONTRIBUTOR
null
It seems that the `pd.set_option` docsting is not parsed properly by `sphinx`: https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.set_option.html It was already the case in 0.25 doc but it was working in 0.23: https://pandas.pydata.org/pandas-docs/version/0.23.4/generated/pandas.set_option.html
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MDU6SXNzdWU1NTg1MTkyOTA=
31,532
BUG display.max_colwidth do not accept -1 for unlimited width
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2
2020-02-01T10:22:39Z
2020-02-02T18:30:39Z
2020-02-02T18:30:39Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd pd.set_option("display.max_colwidth", -1) ``` #### Problem description There is a regression with `"display.max_colwidth"`. In the past, it was only accepting integer. The way to no limit the size was to pass `-1`. In pandas 1,0, this option becomes more consistent and not limiting the width should be set with `None`. However, the support for negative integer was removed. Thus, one would need to either set to `-1` or `None` depending on the pandas version. It would be best to support both options. Potentially, support for negative integer could be removed with a deprecation cycle.
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31,533
Formatting of `pandas.set_option` seems broken
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2020-02-01T10:56:37Z
2020-02-01T11:03:05Z
2020-02-01T11:02:55Z
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![image](https://user-images.githubusercontent.com/33491632/73591030-7f29d600-44e1-11ea-8061-5ac027e3b398.png) https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.set_option.html
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CI: Reverted changes related to 'jedi' warnings
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2020-02-01T11:04:09Z
2020-02-20T03:17:09Z
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MEMBER
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- [x] closes #31407 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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CLN: Replace isinstace(foo, Class) with isinstance(foo, ABCClass)
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2020-02-01T11:37:51Z
2020-02-01T15:24:23Z
2020-02-01T15:08:17Z
MEMBER
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- [x] ref #27353 - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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TST: Added regression test case
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2020-02-01T13:11:59Z
2020-04-06T09:49:03Z
2020-04-06T09:48:29Z
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Resurrection of #28966 - [x] closes #18549 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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DOC: Mention that boolean indexing is impossible for new nullable integer/boolean and string data types when they contain missing values
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2020-02-01T13:23:43Z
2020-02-02T15:20:24Z
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CONTRIBUTOR
null
The new data types nullable integer, nullable boolean, and string cannot do boolean indexing when the columns contain missing values. I searched the [pd.NA][0] and the [boolean indexing][1] sections and have not seen this mentioned. Users need to be aware of this limitation as it greatly reduces their usability. [0]: https://pandas.pydata.org/docs/user_guide/missing_data.html#experimental-na-scalar-to-denote-missing-values [1]: https://pandas.pydata.org/docs/user_guide/indexing.html#boolean-indexing
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TST: Added regression test
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10
2020-02-01T13:36:47Z
2020-04-06T08:46:06Z
2020-04-03T20:20:04Z
MEMBER
null
- [x] closes #10329 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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WEB: Wrong links on web page
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3
2020-02-01T14:10:32Z
2020-02-02T15:24:00Z
2020-02-02T15:22:33Z
CONTRIBUTOR
null
On [this page ](https://pandas.pydata.org/ )The link at "what's new in 1.0.0" (upper right corner) points to the v0.25 whatsnew. On [this page](https://pandas.pydata.org/docs/index.html) the link on the upper left side logo points to the same page. I would expect it to point to the main page (https://pandas.pydata.org/).
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2020-02-01T14:30:13Z
2020-02-01T15:07:26Z
2020-02-01T15:07:26Z
NONE
null
Backport PR #31520: REGR: to_datetime, unique with OOB values
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2020-02-01T15:15:25Z
2020-02-01T19:37:49Z
2020-02-01T19:37:49Z
NONE
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Backport PR #31456: BUG: Groupby.apply wasn't allowing for functions which return lists
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Backport PR #31513 on branch 1.0.x (REGR: Fixed truncation with na_rep)
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2020-02-01T15:21:22Z
2020-02-01T19:39:15Z
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Backport PR #31513: REGR: Fixed truncation with na_rep
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31,543
Backport PR #31529 on branch 1.0.x (BUG: Series multiplication with timedelta scalar numexpr path)
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2020-02-01T15:24:54Z
2020-02-01T19:38:45Z
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Backport PR #31529: BUG: Series multiplication with timedelta scalar numexpr path
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Reading with read_stata in chunks messes up categories
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2020-02-01T15:39:57Z
2020-06-04T11:38:48Z
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#### Code Sample, a copy-pastable example if possible ```python In [2]: df = pd.DataFrame({'col{}'.format(k) : pd.Categorical(['a_label'] + ['another_label']*500) for k in range(2)}) In [3]: df.dtypes Out[3]: col0 category col1 category dtype: object In [4]: df.dtypes[0] Out[4]: CategoricalDtype(categories=['a_label', 'another_label'], ordered=False) In [5]: df.to_stata('/tmp/stata_test.dta', write_index=False) In [6]: pd.read_stata('/tmp/stata_test.dta').dtypes Out[6]: col0 category col1 category dtype: object # ... that's good In [7]: reader = pd.read_stata('/tmp/stata_test.dta', chunksize=100) In [8]: reader.value_labels() Out[8]: {'col0': {0: 'a_label', 1: 'another_label'}, 'col1': {0: 'a_label', 1: 'another_label'}} # ... still all good In [9]: out_chunks = [chunk for chunk in reader] In [10]: out_chunks[1].dtypes[0] Out[10]: CategoricalDtype(categories=['another_label'], ordered=True) # Ooops... where's the other label gone? In [11]: reader.close() In [12]: all_together = pd.concat(out_chunks) In [13]: all_together.dtypes[0] Out[13]: dtype('O') # Ouch! ``` #### Problem description My data has categories, but they are lost only because I'm reading it in chunks. I noticed this because I was reading in chunks a large database of which I only needed a subset of columns: ironically, precisely the fact that I was reading it in chunks made memory usage explode when I reattached them. An by the way, ``Out[8]:`` shows that pandas _is_ aware of the actual categories, even before iterating... so this is the information that should be used to consistently recreate them, and all chunks should have exactly the _same_ (as in ``is``) categorical dtype. #### Expected Output ``Out[10]`` should feature both categories, and ``Out[13]`` should still be a categorical. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.3.final.0 python-bits : 64 OS : Linux OS-release : 4.19.0-6-amd64 machine : x86_64 processor : byteorder : little LC_ALL : None LANG : it_IT.UTF-8 LOCALE : it_IT.UTF-8 pandas : 1.1.0.dev0+276.g2495068ad numpy : 1.16.4 pytz : 2019.2 dateutil : 2.8.0 pip : 18.1 setuptools : 41.0.1 Cython : 0.29.13 pytest : 4.6.3 hypothesis : 3.71.11 sphinx : 1.8.4 blosc : 1.7.0 feather : None xlsxwriter : 0.9.3 lxml.etree : 4.3.2 html5lib : 1.0.1 pymysql : None psycopg2 : 2.7.7 (dt dec pq3 ext lo64) jinja2 : 2.10.1 IPython : 7.5.0 pandas_datareader: None bs4 : 4.7.1 bottleneck : 1.2.1 fastparquet : None gcsfs : None lxml.etree : 4.3.2 matplotlib : 3.0.2 numexpr : 2.6.9 odfpy : None openpyxl : 2.4.9 pandas_gbq : None pyarrow : None pytables : None pytest : 4.6.3 pyxlsb : None s3fs : None scipy : 1.1.0 sqlalchemy : 1.2.18 tables : 3.4.4 tabulate : 0.8.3 xarray : 0.11.3 xlrd : 1.1.0 xlwt : 1.3.0 xlsxwriter : 0.9.3 numba : 0.45.0 </details>
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BUG&TST: df.replace fail after converting to new dtype
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- [x] closes #31517 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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Manual backport 31446
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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: GH31142 Fix for combine.Series
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31,548
Last tick label not showing
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2020-02-01T18:53:55Z
2021-07-27T05:45:37Z
null
MEMBER
null
Noticed while working on #31207 #### Code Sample, a copy-pastable example if possible ```python from pandas import date_range, Series import matplotlib.pyplot as plt index = date_range("1/1/2011", periods=2, freq="H", tz='UTC') ts = Series([188.5, 328.25], index=index) ts.plot() plt.show() ``` #### Problem description Here's the output I see: ![image](https://user-images.githubusercontent.com/33491632/73597461-1021a100-4524-11ea-8f42-0cfc5f9868d7.png) **Note**: We receive a lot of issues on our GitHub tracker, so it is very possible that your issue has been posted before. Please check first before submitting so that we do not have to handle and close duplicates! **Note**: Many problems can be resolved by simply upgrading `pandas` to the latest version. Before submitting, please check if that solution works for you. If possible, you may want to check if `master` addresses this issue, but that is not necessary. For documentation-related issues, you can check the latest versions of the docs on `master` here: https://pandas-docs.github.io/pandas-docs-travis/ If the issue has not been resolved there, go ahead and file it in the issue tracker. #### Expected Output Would have expected both xticks to be labelled #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here below this line] INSTALLED VERSIONS ------------------ commit : d448f7df88534da7c791efa3ef7eff3c72985cb3 python : 3.7.6.final.0 python-bits : 64 OS : Linux OS-release : 4.15.0-74-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 0.26.0.dev0+2017.gfc813e76e numpy : 1.17.3 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 45.0.0.post20200113 Cython : 0.29.14 pytest : 5.3.3 hypothesis : 5.1.5 sphinx : 2.3.1 blosc : None feather : None xlsxwriter : 1.2.7 lxml.etree : 4.4.2 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.11.1 pandas_datareader: None bs4 : 4.8.2 bottleneck : 1.3.1 fastparquet : 0.3.2 gcsfs : None lxml.etree : 4.4.2 matplotlib : 3.1.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.1 pandas_gbq : None pyarrow : 0.15.1 pytables : None pytest : 5.3.3 pyxlsb : None s3fs : 0.4.0 scipy : 1.4.1 sqlalchemy : 1.3.12 tables : 3.6.1 tabulate : 0.8.6 xarray : 0.14.1 xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.7 numba : 0.47.0 </details>
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31,549
replace NotImplementedError with AttributeError
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22
2020-02-01T19:50:25Z
2020-04-22T22:52:33Z
2020-04-21T12:53:13Z
NONE
null
Fixes Python inspection of members - bug reported in https://github.com/pandas-dev/pandas/issues/31474 - [ ] closes #31474 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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31,550
BUG: parase_dates column is in dataframe (#31251)
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4
2020-02-01T19:59:54Z
2020-02-28T09:38:57Z
2020-02-08T15:20:47Z
CONTRIBUTOR
null
- [ ] closes #31251 - [ ] add test_missing_column in pandas/tests/io/parser/test_parse_dates.py - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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ADMIN: Create separate issue templates for different use cases
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6
2020-02-01T20:47:13Z
2020-03-31T17:41:49Z
2020-03-11T02:28:01Z
MEMBER
null
I recall this being mentioned on one of the core dev calls a few months back, and took inspiration from [rapidsai/cudf](https://github.com/rapidsai/cudf) for the various templates. Added templates for the following use cases: - Bug Report - This is largely the same as the current issue template - Documentation Enhancement - Documentation Error - Feature Request - Submit Question - This attempts to direct users to StackOverflow for usage questions We could also add a Blank Template for opening an issue without any template provided, but opted not to do that for now, as I don't want to encourage people to bypass these templates. Could certainly add one if there's a consensus that we want this. I've created a [local repo](https://github.com/jschendel/pandas-templates/issues) where you can see these templates in action since I couldn't figure out another way to actually display these. Click the "New Issue" button to see what these changes would look like. cc @pandas-dev/pandas-core @pandas-dev/pandas-triage
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2020-02-01T20:48:08Z
2020-06-26T12:55:47Z
2020-02-02T22:29:04Z
CONTRIBUTOR
null
- [x] closes #28375 - [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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REF: collect MultiIndex indexing, set methods
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REF: move _convert_to_indexer to Loc
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1
2020-02-01T21:47:35Z
2020-02-01T22:40:26Z
2020-02-01T22:36:50Z
MEMBER
null
It is overriden in iLoc, so by putting it directly in Loc we can simplify bits of it that check `self.name` and keep only the `self.name == "loc"` branches. This lets us get rid of a bit of dead code (L1638-L1642). Most of the diff is misleading; it is only the one method that is moved, with a placeholder kept in NDFrameIndexer
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Backport PR #31545 on branch 1.0.x (BUG&TST: df.replace fail after converting to new dtype)
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2020-02-01T23:10:51Z
2020-02-02T19:16:54Z
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NONE
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Backport PR #31545: BUG&TST: df.replace fail after converting to new dtype
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[MRG] f-string updates for issue #29547
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2020-02-02T01:22:48Z
2020-02-04T00:41:26Z
2020-02-04T00:41:19Z
CONTRIBUTOR
null
Addresses, in part, https://github.com/pandas-dev/pandas/issues/29547 …ape/pivot, reshape/reshape - [ x] xref #29547 - [n/a ] tests added / passed - [x ] passes `black pandas` - [ x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [n/a ] whatsnew entry
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31,557
REF: organize Series indexing tests
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1
2020-02-02T02:15:51Z
2020-02-02T17:38:48Z
2020-02-02T17:34:59Z
MEMBER
null
We've got indexing tests pretty scattered; this is organizing the ones in tests.series.indexing by method
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558,631,131
MDExOlB1bGxSZXF1ZXN0MzY5OTYzODE4
31,558
REF: organize DataFrame tests for indexing, by-method
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2
2020-02-02T02:32:19Z
2020-02-02T18:44:05Z
2020-02-02T18:33:51Z
MEMBER
null
The only change that isnt just rearrangement is implementing where_frame fixture in test_where and using it to get rid of for-loops inside a bunch of tests in that file
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31,559
REF: CategoricalIndex indexing tests
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1
2020-02-02T02:56:45Z
2020-02-02T18:41:49Z
2020-02-02T18:35:58Z
MEMBER
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31,560
Add TODOs Badge to the README
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7
2020-02-02T05:02:48Z
2020-02-21T03:29:13Z
2020-02-02T16:51:37Z
NONE
null
Hi there! I wanted to propose adding the following badge to the README to indicate how many `// TODO` comments are in this codebase: [![TODOs](https://badgen.net/https/api.tickgit.com/badgen/github.com/pandas-dev/pandas)](https://www.tickgit.com/browse?repo=github.com/pandas-dev/pandas) The badge links to `tickgit.com` which is a free service that indexes and displays TODO comments in public github repos. It can help surface latent work and be a way for new contributors to find areas of code to improve. The markdown is: ``` [![TODOs](https://badgen.net/https/api.tickgit.com/badgen/github.com/pandas-dev/pandas)](https://www.tickgit.com/browse?repo=github.com/pandas-dev/pandas) ``` Thanks for considering, feel free to close this issue if it's not appropriate or you prefer not to!
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558,655,891
MDExOlB1bGxSZXF1ZXN0MzY5OTgxMTgw
31,561
Try manual backport
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2020-02-02T07:26:29Z
2020-02-02T07:36:33Z
2020-02-02T07:36:33Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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558,658,061
MDExOlB1bGxSZXF1ZXN0MzY5OTgyODM4
31,562
Backport PR: BUG: Array.__setitem__ failing with nullable boolean mask (#31484)
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4
2020-02-02T07:49:56Z
2020-02-02T16:04:40Z
2020-02-02T16:04:35Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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ENH: add fold support to Timestamp constructor
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71
2020-02-02T08:10:40Z
2020-03-06T08:24:04Z
2020-02-26T12:35:04Z
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**PERF Note:** Current implementation slows down the `Timestamp` constructor. I've tested this thoroughly and tracked it down to ba7fcd5 where I changed the function signatures at the very beginning of working on the PR. The performance overhead appeared before any of the logic was implemented. - [X] closes #25057, closes #31338 - [X] tests added 32 / passed 32 - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [X] whatsnew entry ### Reasoning for changes We currently don't support fold from [PEP 495](https://www.python.org/dev/peps/pep-0495/#the-fold-attribute), and this causes us a lot of grief, including, but not limited to, broken Timestamp representations at the edge of DST shift (see #31338). The values can also break. Support of the fold attribute helps us deal with that. Now, if the wall clock time occurs twice due to a DST shift, we will know exactly at which point in time we are. This also removes inconsistencies between using `pytz` and `dateutil`: now both the values and representations match for both timezone packages near DST summer/winter shifts. ### Scope of PR Implementing fold into Timestamp can easily get out of hand. Parent `pydatetime` has it easy, as the object doesn't need to sync its underlying epoch time, fold, and the representation, like we do. This PR is already large, so I propose we limit its scope to minimal consistent fold support: - when fold is explicitly supplied, attempt to shift value across the DST boundary according to the value supplied - infer fold from value during tz-aware Timestamp construction. For example, if Timestamp is built from epoch time, then we can infer fold. - pass the resulting fold to the underlying `datetime` constructor in `create_timestamp_from_ts` so that it gets stored in the object (can't assign it directly as it's read-only). - implement local timezone support for fold. Don't have any idea how to do this though. Things I suggest we leave to discussion and other PRs: - conflicts resolution. A user can supply `fold=1` for a datetime that is nowhere near a DST shift. We can raise and Error or a Warning in the future. For now, we check whether `fold` can be 1, and if not, we leave it as default `fold=0`. - consider reintroducing ambiguous time errors. Currently, the implementation assumes `fold == 0` for ambiguous time like Timestamp("2019-10-27 01:30:00", tz='Europe/London'). The error was dropped to mirror the `fold=0` default in pydatetime and to allow the fold attribute to be `bint` in Cython functions. **Note:** `pydatetime` doesn't infer fold from value and doesn't raise errors when you assign `fold=1` nowhere near a fold. Example: ```python from datetime import datetime from dateutil.tz import gettz dt = datetime.datetime(2015, 10, 27, 5, 30, 0, 0, gettz("Europe/London"), fold=1) dt.fold OUT: 1 ``` ### Performance problems This implementation behaves as I expect it to, but it slows down scalar constructor benchmarks by 30-70%, even for tz-naive benchmarks. Update: since the benchmark slowdown appeared before any of the functionality, this has nothing to do with the logic introduced and all to do with adding `bint fold` to function signatures, apparently. I'm afraid I don't know Cython well enough to research further.
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1
2020-02-02T09:13:10Z
2020-02-07T07:41:19Z
2020-02-02T16:54:11Z
MEMBER
null
#### Problem description As of now, the Linux py37_locale pipeline seems to fail independent of PR: ``` _________________ TestRegistration.test_registering_no_warning _________________ 2020-02-02T08:55:26.6331296Z [gw1] linux -- Python 3.7.6 /home/vsts/miniconda3/envs/pandas-dev/bin/python self = <pandas.tests.plotting.test_converter.TestRegistration object at 0x7f97699062d0> def test_registering_no_warning(self): plt = pytest.importorskip("matplotlib.pyplot") s = Series(range(12), index=date_range("2017", periods=12)) _, ax = plt.subplots() # Set to the "warn" state, in case this isn't the first test run register_matplotlib_converters() with tm.assert_produces_warning(DeprecationWarning, check_stacklevel=False): # GH#30588 DeprecationWarning from 2D indexing > ax.plot(s.index, s.values) E AssertionError: Did not see expected warning of class 'DeprecationWarning' ``` #### Full failures output <details> ``` 2020-02-02T08:55:26.6329275Z =================================== FAILURES =================================== 2020-02-02T08:55:26.6329476Z _________________ TestRegistration.test_registering_no_warning _________________ 2020-02-02T08:55:26.6331296Z [gw1] linux -- Python 3.7.6 /home/vsts/miniconda3/envs/pandas-dev/bin/python 2020-02-02T08:55:26.6331555Z 2020-02-02T08:55:26.6331736Z self = <pandas.tests.plotting.test_converter.TestRegistration object at 0x7f97699062d0> 2020-02-02T08:55:26.6331919Z 2020-02-02T08:55:26.6332094Z def test_registering_no_warning(self): 2020-02-02T08:55:26.6332272Z plt = pytest.importorskip("matplotlib.pyplot") 2020-02-02T08:55:26.6332458Z s = Series(range(12), index=date_range("2017", periods=12)) 2020-02-02T08:55:26.6332629Z _, ax = plt.subplots() 2020-02-02T08:55:26.6332795Z 2020-02-02T08:55:26.6333232Z # Set to the "warn" state, in case this isn't the first test run 2020-02-02T08:55:26.6333431Z register_matplotlib_converters() 2020-02-02T08:55:26.6333618Z with tm.assert_produces_warning(DeprecationWarning, check_stacklevel=False): 2020-02-02T08:55:26.6333793Z # GH#30588 DeprecationWarning from 2D indexing 2020-02-02T08:55:26.6333984Z > ax.plot(s.index, s.values) 2020-02-02T08:55:26.6334129Z 2020-02-02T08:55:26.6334293Z pandas/tests/plotting/test_converter.py:71: 2020-02-02T08:55:26.6334479Z _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2020-02-02T08:55:26.6334637Z 2020-02-02T08:55:26.6334800Z self = <contextlib._GeneratorContextManager object at 0x7f9769b95250> 2020-02-02T08:55:26.6334986Z type = None, value = None, traceback = None 2020-02-02T08:55:26.6335129Z 2020-02-02T08:55:26.6335310Z def __exit__(self, type, value, traceback): 2020-02-02T08:55:26.6335477Z if type is None: 2020-02-02T08:55:26.6335637Z try: 2020-02-02T08:55:26.6335813Z > next(self.gen) 2020-02-02T08:55:26.6336232Z E AssertionError: Did not see expected warning of class 'DeprecationWarning' 2020-02-02T08:55:26.6336444Z 2020-02-02T08:55:26.6336863Z ../../../miniconda3/envs/pandas-dev/lib/python3.7/contextlib.py:119: AssertionError 2020-02-02T08:55:26.6337076Z ___________________ TestRegistration.test_option_no_warning ____________________ 2020-02-02T08:55:26.6337500Z [gw1] linux -- Python 3.7.6 /home/vsts/miniconda3/envs/pandas-dev/bin/python 2020-02-02T08:55:26.6337681Z 2020-02-02T08:55:26.6337867Z self = <pandas.tests.plotting.test_converter.TestRegistration object at 0x7f9769c690d0> 2020-02-02T08:55:26.6338027Z 2020-02-02T08:55:26.6338188Z def test_option_no_warning(self): 2020-02-02T08:55:26.6338368Z pytest.importorskip("matplotlib.pyplot") 2020-02-02T08:55:26.6338539Z ctx = cf.option_context("plotting.matplotlib.register_converters", False) 2020-02-02T08:55:26.6338733Z plt = pytest.importorskip("matplotlib.pyplot") 2020-02-02T08:55:26.6338903Z s = Series(range(12), index=date_range("2017", periods=12)) 2020-02-02T08:55:26.6339083Z _, ax = plt.subplots() 2020-02-02T08:55:26.6339242Z 2020-02-02T08:55:26.6339402Z # Test without registering first, no warning 2020-02-02T08:55:26.6339586Z with ctx: 2020-02-02T08:55:26.6339759Z # GH#30588 DeprecationWarning from 2D indexing on Index 2020-02-02T08:55:26.6339947Z with tm.assert_produces_warning(DeprecationWarning, check_stacklevel=False): 2020-02-02T08:55:26.6340121Z > ax.plot(s.index, s.values) 2020-02-02T08:55:26.6340414Z 2020-02-02T08:55:26.6340592Z pandas/tests/plotting/test_converter.py:105: 2020-02-02T08:55:26.6340763Z _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2020-02-02T08:55:26.6340928Z 2020-02-02T08:55:26.6341093Z self = <contextlib._GeneratorContextManager object at 0x7f976ac1aa90> 2020-02-02T08:55:26.6341279Z type = None, value = None, traceback = None 2020-02-02T08:55:26.6341440Z 2020-02-02T08:55:26.6341601Z def __exit__(self, type, value, traceback): 2020-02-02T08:55:26.6341764Z if type is None: 2020-02-02T08:55:26.6341941Z try: 2020-02-02T08:55:26.6342099Z > next(self.gen) 2020-02-02T08:55:26.6342547Z E AssertionError: Did not see expected warning of class 'DeprecationWarning' 2020-02-02T08:55:26.6342814Z 2020-02-02T08:55:26.6343228Z ../../../miniconda3/envs/pandas-dev/lib/python3.7/contextlib.py:119: AssertionError ``` </details> Saw this in two PRs that have gone through checks recently, and none of them touch anything that relates to the failing tests (#31562 #31559).
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Fix docstring for to_markdown buf parameter
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1
2020-02-02T09:15:51Z
2020-02-02T17:35:56Z
2020-02-02T17:12:31Z
CONTRIBUTOR
null
- [ ] ~~closes #xxxx~~ (N/A) - [ ] ~~tests added / passed~~ (N/A) - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] ~~whatsnew entry~~ (N/A)
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558,671,996
MDExOlB1bGxSZXF1ZXN0MzY5OTkyOTgw
31,566
TST: DataFrame.interpolate(axis='columns') throws exception while DataFrame.interpolate(axis=1) not (#25190)
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8
2020-02-02T09:53:06Z
2020-05-12T12:20:46Z
2020-05-12T12:18:35Z
CONTRIBUTOR
null
Make sure that DataFrame.interpolate allows setting having "columns" or "index" as the `axis` argument. I included the `whatsnew` entry as well. However, since the bug was already fixed in v1.0.0, it might be reasonable to just drop it. I leave it to the reviewer's discretion, that's why I've put it in a separate commit. - [x] closes #25190 - [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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558,674,398
MDExOlB1bGxSZXF1ZXN0MzY5OTk0NzQz
31,567
WEB: Changed whatsnew href from v0.25.0 to v1.0.0
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2
2020-02-02T10:15:29Z
2021-08-26T10:55:44Z
2020-02-02T15:22:33Z
CONTRIBUTOR
null
- [ ] closes #31539
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558,679,113
MDExOlB1bGxSZXF1ZXN0MzY5OTk3Njc2
31,568
Description of Plotting Backends added in the end.
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2020-02-02T10:57:17Z
2020-03-08T05:20:20Z
2020-03-08T05:20:20Z
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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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558,684,446
MDExOlB1bGxSZXF1ZXN0MzcwMDAxNjc1
31,569
BUG accept and deprecate negative integer for max_colwidth
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7
2020-02-02T11:44:06Z
2020-02-03T10:38:51Z
2020-02-02T18:30:39Z
CONTRIBUTOR
null
- [x] closes #31532 - [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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MDU6SXNzdWU1NTg2ODUyNDc=
31,570
pandas.read_json(..., split='orient') builts DatetimeIndex instead of using 'index' attribute of json file
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#### Code Sample, a copy-pastable example if possible ```python from pathlib import Path import json import pandas as pd path_to_json = Path('path/to/json') with open(path_to_json, 'r') as feature_file: features = pd.read_json(feature_file, orient='split') with open(path_to_json, 'r') as feature_file: feats_= json.load(feature_file) print(all(a == b for a, b in zip(feats_['index'],list(features.index)))) features.index = feats_['index'] # shouldn't be necessary print(features.index) ``` #### Problem description I serialised a dataframe into json using the split options. When deserializing, a DatetimeIndex is built instead of using the 'index' attribute of my JSON file. DatetimeIndex(['1970-02-03 08:19:30.607525111', '1970-02-14 00:59:30.563649155', '1970-02-13 07:19:30.563381155', '1970-02-24 13:12:50.531381187', '1970-02-08 10:26:10.515841203', '1970-03-08 23:19:30.493779225', '1971-08-16 21:55:04.791319239', '1970-02-26 21:36:10.419351299', '1970-02-23 23:29:30.419351299', '1970-02-19 06:36:10.403239135', ... '1970-01-31 23:21:55.267811637', '1970-01-24 21:11:55.235221241', '1970-03-14 10:11:55.143305301', '1970-01-23 10:41:54.983117151', '1970-02-15 09:58:34.929541359', '1970-03-23 04:05:14.823177145', '1970-03-13 09:31:54.807145225', '1970-03-10 18:05:14.347205225', '1970-01-20 07:21:54.347143145', '1970-01-17 06:11:54.347269257'], dtype='datetime64[ns]', length=5294, freq=None) My JSON file: [TCGA-2A-AAYO-01Z-00-DX1.A5BB3437-956A-4A42-AC28-1217B8016970.zip](https://github.com/pandas-dev/pandas/files/4144042/TCGA-2A-AAYO-01Z-00-DX1.A5BB3437-956A-4A42-AC28-1217B8016970.zip) #### Expected Output True, Index(['28811_70607_525_111', '38051_70563_649_155', '37415_70563_381_155', '47131_70531_381_187', '33207_70515_841_203', '57863_70493_779_225', '51227_70479_1319_239', '49161_70419_351_299', '46637_70419_351_299', '42573_70403_239_135', ... '26761_15267_811_637', '20635_15235_221_241', '62575_15143_305_301', '19393_14983_117_151', '39239_14929_541_359', '70131_14823_177_145', '61687_14807_145_225', '59403_14347_205_225', '16681_14347_143_145', '14047_14347_269_257'], dtype='object', length=5294) #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here below this line] INSTALLED VERSIONS ------------------ commit : None python : 3.7.3.final.0 python-bits : 64 OS : Linux OS-release : 5.3.0-28-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 1.0.0 numpy : 1.16.3 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 42.0.2.post20191201 Cython : None pytest : 4.5.0 hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.10.1 pandas_datareader: None bs4 : 4.8.1 bottleneck : 1.3.1 fastparquet : None gcsfs : None lxml.etree : None matplotlib : 3.1.1 numexpr : 2.7.0 odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : 4.5.0 pyxlsb : None s3fs : None scipy : 1.3.1 sqlalchemy : None tables : 3.4.4 tabulate : None xarray : None xlrd : 1.2.0 xlwt : None xlsxwriter : None numba : 0.43.1 </details>
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558,687,817
MDExOlB1bGxSZXF1ZXN0MzcwMDA0MTk0
31,571
DOC fix *_option() docstring
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8
2020-02-02T12:12:30Z
2020-02-03T10:39:34Z
2020-02-03T10:39:33Z
CONTRIBUTOR
null
- [x] closes #28780 - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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558,698,124
MDU6SXNzdWU1NTg2OTgxMjQ=
31,572
what is the future of nanosecond in parquet?
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2
2020-02-02T13:40:56Z
2020-02-04T13:31:52Z
2020-02-03T12:28:24Z
CONTRIBUTOR
null
pandas 1.0.0 sample code as below: ```python import pandas as pd df = pd.DataFrame(data=range(123456000, 123456789), columns=["c1"]) df["c2"] = pd.Timestamp("2020-01-31") + pd.to_timedelta(df["c1"], "ns") df.to_parquet('nanosecond-test.parquet', # use_deprecated_int96_timestamps=True ) ``` without `use_deprecated_int96_timestamps=True`, an exception will raise: ``` ... File "C:\dev\.venv\lib\site-packages\pyarrow\parquet.py", line 474, in write_table self.writer.write_table(table, row_group_size=row_group_size) File "pyarrow\_parquet.pyx", line 1375, in pyarrow._parquet.ParquetWriter.write_table File "pyarrow\error.pxi", line 78, in pyarrow.lib.check_status pyarrow.lib.ArrowInvalid: Casting from timestamp[ns] to timestamp[ms] would lose data: 1580428800123456000 ``` my question is: will nanoseconds not be supported by parquet format in the future? or there will be some other way to convert nanoseconds between pandas and parquet?
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558,698,715
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31,573
CI: Remove warning raising after new matplotlib release
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5
2020-02-02T13:45:49Z
2020-02-02T16:42:32Z
2020-02-02T16:42:20Z
MEMBER
null
- [ ] xref #31562 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry seems CI is broken after the new release of matplotlib
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5
2020-02-02T16:06:04Z
2020-05-01T14:57:54Z
2020-05-01T14:57:54Z
MEMBER
null
reopening #31518 cc @jbrockmendel @WillAyd
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31,575
pandas 1.0.0 read_csv() is broken use `open( buffering=0)` option.
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4
2020-02-02T16:11:58Z
2020-02-05T13:27:05Z
2020-02-05T13:27:05Z
CONTRIBUTOR
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#### Code Sample ```python import os import pandas import tempfile fname = "" with tempfile.NamedTemporaryFile(delete=False, mode="w+", encoding="shift-jis") as f: f.write("てすと\nbar") fname = f.name print(fname) try: with open(fname,mode="r", encoding="shift-jis") as f: result = pandas.read_csv(f) print("read shift-jis") print(result) with open(fname,mode="r", encoding="shift-jis") as f: result = pandas.read_csv(f,encoding="utf-8") print("open shift-jis file and read_csv with encoding: utf-8") print(result) with open(fname,mode="rb") as f: result = pandas.read_csv(f,encoding="shift-jis") print("open binary with buffered and read_csv with encoding: shift-jis") print(result) with open(fname,mode="rb",buffering=0) as f: result = pandas.read_csv(f,encoding="shift-jis") print("open binary without burrered and read_csv with encoding: shift-jis") print(result) except Exception as e: print(e) os.unlink(fname) ``` #### Problem description Pandas 1.0.0, this sample does not work. But pandas 0.25.3, this sample works fine. Open file with buffering=0 option, f is `RawIOBase`. This case seems encoding option will be ignored. https://github.com/pandas-dev/pandas/pull/30771/files#diff-0335ae9037e4eb4747749a9f94cffd32R641 https://github.com/pandas-dev/pandas/pull/30771/files#diff-777d7549579ddc0c6e67596ad87e0d27R1879 #### Expected Output ``` /tmp/tmpxxxxxxxxxxx read shift-jis てすと 0 bar open shift-jis file and read_csv with encoding: utf-8 てすと 0 bar open binary with buffered and read_csv with encoding: shift-jis てすと 0 bar open binary without burrered and read_csv with encoding: shift-jis てすと 0 bar ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.6.8.final.0 python-bits : 64 OS : Linux OS-release : 4.4.0-18362-Microsoft machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : ja_JP.UTF-8 LOCALE : ja_JP.UTF-8 pandas : 1.0.0 numpy : 1.17.2 pytz : 2019.3 dateutil : 2.8.0 pip : 19.3.1 setuptools : 41.4.0 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.4.1 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10 IPython : None pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.4.1 matplotlib : 3.1.1 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None </details>
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Backport PR #31573 on branch 1.0.x (CI: Remove warning raising after new matplotlib release)
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2020-02-02T16:42:49Z
2020-02-02T17:10:03Z
2020-02-02T17:10:03Z
NONE
null
Backport PR #31573: CI: Remove warning raising after new matplotlib release
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2020-02-02T16:42:54Z
2020-02-02T17:39:20Z
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Backport PR #31482 on branch 1.0.x (BUG: objToJson.c - fix return value)
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2020-02-02T17:09:29Z
2020-02-02T18:32:03Z
2020-02-02T18:32:03Z
NONE
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Backport PR #31482: BUG: objToJson.c - fix return value
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CLN: Fix ReadMe Badges
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3
2020-02-02T17:11:58Z
2020-02-02T18:31:43Z
2020-02-02T18:31:37Z
CONTRIBUTOR
null
Noticed when discussing https://github.com/pandas-dev/pandas/issues/31560 our badges are written in HTML + take up a lot of vertical space on our Readme. My branch (a lot more compact vs master): https://github.com/alimcmaster1/pandas/tree/mcmali-readme#pandas-powerful-python-data-analysis-toolkit I've also added a NumFocus one :)
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558,728,536
MDU6SXNzdWU1NTg3Mjg1MzY=
31,580
Checking plot labels works locally but not during CI
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1
2020-02-02T17:28:53Z
2020-02-05T01:02:58Z
2020-02-05T01:02:58Z
MEMBER
null
#### Code Sample, a copy-pastable example if possible xref #31207 If I modified the test as follows (with `import re` at the top of the file) ```python with tm.assert_produces_warning(None): fig, ax = self.plt.subplots() ts.plot(ax=ax) fig.canvas.draw() labels = [i.get_text() for i in ax.get_xticklabels()] # Extract H:M component, check first point is in correct timezone. # NOTE: this test could be updated once GH 31548 is fixed, # so that the last point is checked as well. assert re.findall(r"[^:]?(\d{2}:\d{2})", labels[0])[0] == "00:00" _check_plot_works(ts.plot) ``` then the test worked locally, but not during CI. Looking at the job details for linux py36_local, I could see that `labels` was ``` ['01 00:01', ...1 00:51', ...] ``` I don't understand where that extra minute is coming from (nor can I understand why it only appears during CI). #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here below this line] INSTALLED VERSIONS ------------------ commit : 6e2d3aeb6179d40abfb68fdcc5b064a1d6b0bc59 python : 3.7.6.final.0 python-bits : 64 OS : Linux OS-release : 4.15.0-74-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 0.26.0.dev0+2036.g6e2d3aeb6 numpy : 1.17.3 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 45.0.0.post20200113 Cython : 0.29.14 pytest : 5.3.3 hypothesis : 5.1.5 sphinx : 2.3.1 blosc : None feather : None xlsxwriter : 1.2.7 lxml.etree : 4.4.2 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.11.1 pandas_datareader: None bs4 : 4.8.2 bottleneck : 1.3.1 fastparquet : 0.3.2 gcsfs : None lxml.etree : 4.4.2 matplotlib : 3.1.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.1 pandas_gbq : None pyarrow : 0.15.1 pytables : None pytest : 5.3.3 pyxlsb : None s3fs : 0.4.0 scipy : 1.4.1 sqlalchemy : 1.3.12 tables : 3.6.1 tabulate : 0.8.6 xarray : 0.14.1 xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.7 numba : 0.47.0 </details>
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558,733,208
MDU6SXNzdWU1NTg3MzMyMDg=
31,581
Assigning column with DataFrame(dtype='category') doesn't preserve categorical dtype, but Series does
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2
2020-02-02T18:06:16Z
2021-07-27T05:46:09Z
null
MEMBER
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd df = pd.DataFrame([1,2,3]) df['col1'] = pd.DataFrame([1,2,3], dtype='category') df['col2'] = pd.Series([1,2,3], dtype='category') df.dtypes ``` #### Problem description This returns ``` 0 int64 col1 int64 col2 category dtype: object ``` #### Expected Output ``` 0 int64 col1 category col2 category dtype: object ``` #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here below this line] INSTALLED VERSIONS ------------------ commit : d9f028dba97e9a3f21077ceeb96ca6552909c3b3 python : 3.7.6.final.0 python-bits : 64 OS : Linux OS-release : 4.15.0-74-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 0.26.0.dev0+2031.gd9f028dba.dirty numpy : 1.17.3 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 45.0.0.post20200113 Cython : 0.29.14 pytest : 5.3.3 hypothesis : 5.1.5 sphinx : 2.3.1 blosc : None feather : None xlsxwriter : 1.2.7 lxml.etree : 4.4.2 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.11.1 pandas_datareader: None bs4 : 4.8.2 bottleneck : 1.3.1 fastparquet : 0.3.2 gcsfs : None lxml.etree : 4.4.2 matplotlib : 3.1.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.1 pandas_gbq : None pyarrow : 0.15.1 pytables : None pytest : 5.3.3 pyxlsb : None s3fs : 0.4.0 scipy : 1.4.1 sqlalchemy : 1.3.12 tables : 3.6.1 tabulate : 0.8.6 xarray : 0.14.1 xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.7 numba : 0.47.0 </details>
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558,738,694
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31,582
Dispatch IntervalIndex.argsort to IntervalArray
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4
2020-02-02T18:47:50Z
2021-01-20T00:13:22Z
2020-02-19T19:47:55Z
MEMBER
null
cc @jschendel thoughts on if we can do better in the non-ascending/"quicksort" case?
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31,583
REF: Timestamp constructor tests
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2020-02-02T18:57:56Z
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Backport PR #31545: BUG&TST: df.replace fail after converting to new …
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2020-02-02T19:07:30Z
2020-02-02T19:42:56Z
2020-02-02T19:42:56Z
CONTRIBUTOR
null
xref #31555 xref #31545
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REF: define _convert_to_indexer in Loc
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1
2020-02-02T20:18:45Z
2020-02-02T22:39:38Z
2020-02-02T22:22:17Z
MEMBER
null
_convert_to_indexer is overriden by iloc, so the version currently defined in LocationIndexer is only used in Loc. This moves it directly to Loc. Also, since ix has been removed, we have an unnecessary level of the class hierarchy, so this merges NDFrameIndexer and LocationIndexer. Follow-ups will move base class methods that are actually Loc-specific to Loc.
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pd.cut returning incorrect output in some cases
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2020-02-02T21:05:06Z
2020-04-03T05:48:41Z
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MEMBER
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(Below is from master) ```python import numpy as np import pandas as pd arr = np.arange(10).astype(object) arr[::2] = np.nan print(arr) # [nan 1 nan 3 nan 5 nan 7 nan 9] result = pd.cut(arr, 2) print(result) # [NaN, (0.992, 5.0], NaN, (0.992, 5.0], NaN, (0.992, 5.0], NaN, (0.992, 5.0], NaN, (0.992, 5.0]] # Categories (2, interval[float64]): [(0.992, 5.0] < (5.0, 9.0]] print(result.unique()) # [NaN, (0.992, 5.0]] # Categories (1, interval[float64]): [(0.992, 5.0]] ``` Using `cut` with an array of object dtype containing missing values seems to return the wrong intervals in some cases (e.g., in the example above only the first interval appears in the result). Actually, the only situation where I've been able to reproduce this problem is specifically when the NaN values are evenly spaced, which is strange. Looks like the problem is due to `searchsorted` in `numpy`: ```python import numpy as np arr = np.array([1, 2, 3, 4, 5], dtype=object) arr[::2] = np.nan print(arr) # [nan 2 nan 4 nan] bins = np.array([1, 3, 5]) # Inserts into same position (incorrect) bins.searchsorted(arr) # array([0, 1, 0, 1, 0]) # Now inserts into different positions (correct) bins.searchsorted(arr.astype(float)) # array([3, 1, 3, 2, 3]) np.__version__ # '1.17.5' ```
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Backport PR #31440 on branch 1.0.x (BUG: Fix qcut for nullable integers)
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0
2020-02-02T22:19:37Z
2020-02-02T22:57:17Z
2020-02-02T22:57:17Z
NONE
null
Backport PR #31440: BUG: Fix qcut for nullable integers
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31,588
BUG: Handle object arrays with NaN in cut
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2020-02-02T22:41:04Z
2020-02-13T22:57:03Z
2020-02-13T22:56:59Z
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- [x] closes #31586 - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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558,774,393
MDExOlB1bGxSZXF1ZXN0MzcwMDY4Mjc0
31,589
REF: Move Loc-only methods to Loc
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pip3 install pandas==1.0.0 fails to find source distribution on ARM host
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2020-02-02T23:20:24Z
2020-02-03T03:51:08Z
2020-02-03T03:51:08Z
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#### Code Sample, a copy-pastable example if possible ```python $ time pip3 install pandas==1.0.0 Collecting pandas==1.0.0 Could not find a version that satisfies the requirement pandas==1.0.0 (from versions: 0.1, 0.2b0, 0.2b1, 0.2, 0.3.0b0, 0.3.0b2, 0.3.0, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.5.0, 0.6.0, 0.6.1, 0.7.0rc1, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.8.0rc1, 0.8.0rc2, 0.8.0, 0.8.1, 0.9.0, 0.9.1, 0.10.0, 0.10.1, 0.11.0, 0.12.0, 0.13.0, 0.13.1, 0.14.0, 0.14.1, 0.15.0, 0.15.1, 0.15.2, 0.16.0, 0.16.1, 0.16.2, 0.17.0, 0.17.1, 0.18.0, 0.18.1, 0.19.0rc1, 0.19.0, 0.19.1, 0.19.2, 0.20.0rc1, 0.20.0, 0.20.1, 0.20.2, 0.20.3, 0.21.0rc1, 0.21.0, 0.21.1, 0.22.0, 0.23.0rc2, 0.23.0, 0.23.1, 0.23.2, 0.23.3, 0.23.4, 0.24.0rc1, 0.24.0, 0.24.1, 0.24.2, 0.25.0rc0, 0.25.0, 0.25.1, 0.25.2, 0.25.3) No matching distribution found for pandas==1.0.0 ``` #### Problem description Unable to build pandas on a machine that has to build from source. Here's my host information: ``` $ uname -a Linux rockpro64 4.4.180 #1 SMP Fri May 31 17:07:08 EDT 2019 aarch64 GNU/Linux ```
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558,783,822
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31,591
ENH: Enable indexing with nullable Boolean
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24
2020-02-03T00:28:12Z
2020-02-23T14:55:01Z
2020-02-22T15:37:38Z
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closes #31503 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry I think from the discussion in https://github.com/pandas-dev/pandas/issues/31503 that this is something people want to allow.
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REF: parametrize indexing tests
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2020-02-03T00:43:37Z
2020-02-05T01:41:18Z
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Import libindex in series.py
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2020-02-03T00:56:28Z
2020-02-03T00:59:59Z
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I think we may be missing an import in `series.py`. cc @jbrockmendel
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558,792,158
MDExOlB1bGxSZXF1ZXN0MzcwMDgxODkw
31,594
TST: troubleshoot npdev build
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6
2020-02-03T01:18:14Z
2020-02-03T14:33:00Z
2020-02-03T03:03:25Z
MEMBER
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558,798,566
MDU6SXNzdWU1NTg3OTg1NjY=
31,595
`Series.isin` does not return all values in the column
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1
2020-02-03T01:52:49Z
2020-02-03T02:13:42Z
2020-02-03T02:13:15Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import numpy as np print(pd.__version__) df = pd.DataFrame({'t': np.arange(0.5, 2.0, 0.1)}) slxn = df.t.isin(np.arange(0.5, 2.0, 0.5)) slxn.sum() ``` #### Problem description `df` is a data frame with a single column called `t`. The values of this column range from 0.5 to 2.0 in increments of 0.1. There should be three values in `slxn` which are `True`, however the expression above yields 1. #### Expected Output ```python >>>slxn.sum() 3 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.4.final.0 python-bits : 64 OS : Darwin OS-release : 18.7.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : en_CA.UTF-8 LOCALE : en_CA.UTF-8 pandas : 1.0.0 numpy : 1.17.4 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 45.1.0.post20200127 Cython : 0.29.14 pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.10.1 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : 3.1.2 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : None tables : None tabulate : None xarray : 0.14.1 xlrd : None xlwt : None xlsxwriter : None numba : None </details>
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558,855,794
MDExOlB1bGxSZXF1ZXN0MzcwMTMxMTM3
31,596
BUG: read_csv used in file like object RawIOBase is not recognize encoding option
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7
2020-02-03T05:40:21Z
2020-02-05T20:56:20Z
2020-02-05T13:27:05Z
CONTRIBUTOR
null
- [x] closes #31575 - [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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31,597
REF: implement tests/indexes/objects/
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4
2020-02-03T06:20:01Z
2020-02-05T01:33:37Z
2020-02-05T01:31:09Z
MEMBER
null
Many of the tests in test_base are about `Index.__new__` cases that return a subclass. This is intended specifically for Index-only tests.
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REF: simplify PeriodIndex.get_loc
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2020-02-03T06:29:49Z
2020-02-10T23:32:30Z
2020-02-09T20:41:34Z
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This makes PeriodEngine follow patterns in DatetimeEngine, so soon we can have it subclass DatetimeEngine instead of Int64Engine, which will lead to more simplifications. This also puts us within striking distance of sharing get_loc code
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CLN: _convert_list_indexer only called by Loc
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How to determine the severity of skewness(nanskew) such as highly skewed,moderately skewed,normally distributed,etc by interpreting the returned numerical values from the .skew() function.
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2020-02-03T07:36:17Z
2020-02-03T11:05:36Z
2020-02-03T11:05:29Z
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#### Code Sample, a copy-pastable example if possible ```python # Your code here ``` #### Problem description The given documentation available below doesn't provide any specifics about the skewness results interpretation. https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.skew.html #### Expected Output #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here below this line] </details>
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31,601
Backport PR #31207 on branch 1.0.x (BUG: no longer raise user warning when plotting tz aware time series)
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2
2020-02-03T07:37:08Z
2020-02-03T10:57:46Z
2020-02-03T10:57:46Z
NONE
null
Backport PR #31207: BUG: no longer raise user warning when plotting tz aware time series
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Manual backport 31594
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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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2020-02-03T09:32:56Z
2020-02-03T10:38:41Z
2020-02-03T10:38:41Z
CONTRIBUTOR
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backport of #31569 in 1.0.x
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31,604
DOC: pandas.Series.dt.day has incorrect docs
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2020-02-03T09:44:59Z
2020-02-03T12:41:37Z
2020-02-03T12:41:37Z
NONE
null
See https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.dt.day.html#pandas.Series.dt.day. The documentation shows the description for dt.month and not dt.day.
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558,964,739
MDU6SXNzdWU1NTg5NjQ3Mzk=
31,605
Unexpected TypeError with groupby
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5
2020-02-03T09:48:30Z
2020-02-05T01:26:33Z
2020-02-05T01:26:33Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # Your code here import numpy as np import pandas as pd def fct(group): return group[1].values.flatten() df = pd.DataFrame([('A', 1), ('A', 2), ('A', 3), ('B', 4), ('B', 5), ('C', np.nan),]) df.groupby(0).apply(fct) ``` #### Problem description This code works with pandas 0.25.1 BUT NOT with pandas 1.0.0. With pandas 1.0.0, the output is: TypeError: copy() takes no keyword arguments #### Expected Output With pandas 0.25.1, the output is: Series: 0 A [1.0, 2.0, 3.0] B [4.0, 5.0] C [nan] #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.8.1.final.0 python-bits : 64 OS : Windows OS-release : 7 machine : AMD64 processor : Intel64 Family 6 Model 94 Stepping 3, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : fr_FR.cp1252 pandas : 1.0.0 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 45.1.0.post20200127 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.11.1 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : 3.1.1 numexpr : None odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.3.2 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None </details>
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558,975,377
MDExOlB1bGxSZXF1ZXN0MzcwMjI5MTMy
31,606
DOC: add back google analytics with the new doc theme
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2020-02-03T10:07:33Z
2020-02-03T12:35:38Z
2020-02-03T12:07:11Z
MEMBER
null
WIth the new theme, we didn't have google analytics anymore (how we had it before https://github.com/pandas-dev/pandas/pull/27662), so did a quick PR to add that to the theme with an option: https://github.com/pandas-dev/pydata-bootstrap-sphinx-theme/pull/84
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DOC: combine regressions in section in v1.0.1 whatsnew
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2020-02-03T10:30:05Z
2020-02-03T14:32:14Z
2020-02-03T14:05:38Z
MEMBER
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Similarly how we did it for 0.24.x, gathering all regressions in the first section of the whatsnew (as those are the most important part of 1.0.1) cc @TomAugspurger
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Backport PR #31571 on branch 1.0.x (DOC fix *_option() docstring)
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0
2020-02-03T10:39:43Z
2020-02-03T11:27:01Z
2020-02-03T11:27:01Z
NONE
null
Backport PR #31571: DOC fix *_option() docstring
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31,609
_check_for_bom at parsers.py remove all the fields behind BOM
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1
2020-02-03T10:42:54Z
2020-09-19T22:02:56Z
2020-09-19T22:02:56Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd # version 0.23.0, the same as 1.0.0 df=pd.read_csv("1.csv",sep=r",") # 1.csv treat first row as header, which start with BOM due to some unknow reason. print(df.columns) ``` #### Problem description _check_for_bom will not just remove BOM, but also remove all the fields except for the first one. due to code: ``` first_row = first_row[0] // line 2571 at parsers.py @0.23.0 first_row_bom = first_row[0] // line 2758 at parsers.py @latest code at github ``` Solution: Change line 2775 at parsers.py @latest code at github to ``` return [first_row_bom[1:]]+first_row[1:] ```
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Backport PR #31594: TST: troubleshoot npdev build
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0
2020-02-03T10:46:34Z
2020-02-03T12:53:41Z
2020-02-03T12:22:38Z
MEMBER
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Backport of https://github.com/pandas-dev/pandas/pull/31594
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0
2020-02-03T12:07:39Z
2020-02-03T12:35:58Z
2020-02-03T12:35:58Z
NONE
null
Backport PR #31606: DOC: add back google analytics with the new doc theme
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Groupby apply result shape depends on internal apply path
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7
2020-02-03T13:11:48Z
2020-07-16T14:17:44Z
2020-07-16T14:17:43Z
MEMBER
null
#### Problem description The shape returned by groupby.apply currently depends on the path the internal apply takes (fast apply vs slow apply) which is opaque to the user. The following examples show the behaviour for two simple examples where the fast path returns the group key as index while the slow path returns the original index. #### Code Sample, a copy-pastable example if possible ```python import pandas as pd df = pd.DataFrame({'A': [0, 0, 1], 'b': range(3)}) def slow(group): # slow apply because of check `result is input`, c.f. https://github.com/pandas-dev/pandas/blob/44782c0809e296a8e57b7f77d963e999c7e0f4a7/pandas/_libs/reduction.pyx#L494 return group def fast(group): return group.copy() ``` ``` ...: df.groupby("A").apply(slow) ...: Out[3]: A B 0 0 0 1 0 1 2 1 2 In [4]: df.groupby("B").apply(fast) Out[4]: A B B 0 0 0 0 1 1 0 1 ``` #### Expected Output A transparent and consistent output data type. In particular, the behaviour should not be coupled to private, performance related internals. #### Related issues There are a lot of related issues which may or may not have the same root cause. Here an excerpt #12824 #14538 #12977 #28662 #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.8.1.final.0 python-bits : 64 OS : Darwin OS-release : 18.7.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : None.UTF-8 pandas : 1.0.0 numpy : 1.16.5 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 45.1.0.post20200119 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 : 7.12.0 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None </details>
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BUG: Ensure same index is returned for slow and fast path in groupby.apply
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2020-02-03T13:15:28Z
2020-06-02T09:31:04Z
2020-05-27T14:06:52Z
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This _fixes_ the internal check to be consistent with the slow apply path - [x] closes #31612 - [x] closes #14927 closes #13056 - [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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MDExOlB1bGxSZXF1ZXN0MzcwMzE1NTcz
31,614
REGR: fix non-reduction apply with tz-aware objects
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4
2020-02-03T13:21:47Z
2020-02-05T12:34:41Z
2020-02-05T08:15:33Z
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Closes https://github.com/pandas-dev/pandas/issues/31505
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