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37,319
TST/REF: misplaced frame.indexing tests
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2
2020-10-21T17:59:06Z
2020-10-22T23:49:11Z
2020-10-22T23:33:10Z
MEMBER
null
I've been saving the indexing tests for last-ish because they are some of the hardest to organize consistently. This starts in on that.
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37,320
ENH: enable Series.info()
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14
2020-10-21T19:26:28Z
2021-10-05T15:39:35Z
null
MEMBER
null
- [ ] closes #5167 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry I took over https://github.com/pandas-dev/pandas/pull/31796 from @MarcoGorelli. In this PR I took the tests and the docstring from https://github.com/pandas-dev/pandas/pull/31796, refactored tests (separated into dataframe and series-related only test classes). Then on top of the recent changes (https://github.com/pandas-dev/pandas/pull/36752) I implemented series info. New classes: - ``SeriesInfo`` (store data, which will be used in the outputs) - ``SeriesInfoPrinter`` (basically creator of the appropriate table builder) - ``SeriesTableBuilder`` (both Verbose and NonVerbose) - ``TableBuilderVerboseMixin`` (shared functionality for verbose info builders of both dataframe and series) It seems to me that tests are not sufficient enough. In particular, it seems that empty series info should be covered. Currently there is a special empty dataframe info, but for series info there is just a generic verbose info with zero items. If there is a need for a dedicated empty series info, then I would need to add method ``_fill_empty_info`` into ``SeriesTableBuilder``. Static typing makes code quite verbose. In some cases we have the very same methods/properties, but with different type annotations to satisfy type checking (methods are small, but anyway). If somebody can suggest me a better way to handle it, then that would be great.
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BUG: Index._id
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3
2020-10-21T20:16:12Z
2020-10-24T08:05:43Z
2020-10-22T23:31:02Z
CONTRIBUTOR
null
Fixes #37213.
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DOC: Add protocol value '5' to pickle #37316
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2
2020-10-21T22:18:57Z
2020-10-22T16:04:19Z
2020-10-22T00:11:03Z
CONTRIBUTOR
null
- [X] closes #37316
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df.groupby(by=["b"], dropna=False).sum() returns"groupby() got an unexpected keyword argument 'dropna'"
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2020-10-21T22:27:03Z
2021-09-30T12:49:10Z
2020-10-22T00:26:27Z
NONE
null
Using the official documentation for groupby: https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.groupby.html the dropna=False argument does not work even with given example. l = [[1, 2, 3], [1, None, 4], [2, 1, 3], [1, 2, 2]] df = pd.DataFrame(l, columns=["a", "b", "c"]) df.groupby(by=["b"], dropna=False).sum()
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TST/REF: collect _libs tests
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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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Backport PR #37288: Regression in offsets caused offsets to be no longer hashable
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BUG: uint32 is not being preserved while round-tripping through parquet file
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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 In[42]: df = pd.DataFrame({'a':pd.Series([1, 2, 3], dtype="uint64")}) In[43]: df.to_parquet('a') In[44]: pd.read_parquet('a').dtypes Out[44]: a uint64 dtype: object In[45]: df = pd.DataFrame({'a':pd.Series([1, 2, 3], dtype="uint32")}) In[46]: df.to_parquet('a') In[47]: pd.read_parquet('a').dtypes Out[47]: a int64 dtype: object ``` #### Problem description It appears to be that `uint32` is not being preserved like `uint64` is being preserved while round-tripping through a parquet file. #### Expected Output Preserve the `uint32` dtype. #### 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> Crosslinking to cudf fuzz-testing for tracking purpose: https://github.com/rapidsai/cudf/issues/6001
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1
2020-10-22T01:54:16Z
2020-10-28T12:04:57Z
2020-10-28T12:04:57Z
MEMBER
null
Ran into an unrelated failure I haven't seen before in #37227. Occurs in pandas/tests/computation/test_eval.py:211 https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=45754&view=logs&j=89027c74-d1cd-5e5d-942f-e6a83ebe07fe&t=768a7acf-33bc-5b3d-16e1-da874611990b&l=92 ``` E numpy array values are different (2.0 %) E [left]: [[10.885282508088554, 24.01653292315993, 2.5334764666276754, -26.20850153209755, -9.292195139788854], [4.631505078070531, 0.43305142455418066, 9.796254287558813, -0.817344630073512, -0.22979400652647], [16.964677878827604, 3.69159983714683, 0.16736723603895715, -13.866779975183137, -0.6547978574323233], [0.9332007475405953, 7.326122317479498, 2.2912333245159338, -0.9957313583066364, -0.21968895568980523], [1.2901449066742292, 1.5178122458579082, 0.3101899430985658, -0.3600640963287845, -3.8622009358387115], [1.7324531378555383, 1.6717678316305915, 0.39248288379342006, -2.259323953594114, -13.215192982180358], [60.71781357885021, 13.08256705151808, 3.306197592158367, -2.603163236030203, -0.5783506355776388], [47.71284995565457, 39.508260846448245, 0.16695497225705538, -7.39400467084908, -0.9437156402277913], [0.40861584564047, 611.3601636482858, 0.8350779591410551, -3.034557944041943, -0.33953697203938915], [46.62807235120426, 6.308023182021756, 5.01671850424403, -0.23877079736974396, -0.5460348132251863]] E [right]: [[10.885282508088554, 24.01653292315993, 2.5334764666276754, -26.20850153209755, -9.292195139788854], [4.631505078070531, 0.43305142455418066, 9.796254287558813, -0.817344630073512, -0.22979400652647], [16.964677878827608, 3.69159983714683, 0.16736723603895715, -13.866779975183137, -0.6547978574323233], [0.9332007475405953, 7.326122317479498, 2.2912333245159338, -0.9957313583066364, -0.21968895568980523], [1.2901449066742292, 1.5178122458579082, 0.3101899430985658, -0.3600640963287845, -3.8622009358387115], [1.7324531378555383, 1.6717678316305915, 0.39248288379342006, -2.259323953594114, -13.215192982180358], [60.71781357885021, 13.08256705151808, 3.306197592158367, -2.603163236030203, -0.5783506355776388], [47.71284995565457, 39.508260846448245, 0.16695497225705538, -7.39400467084908, -0.9437156402277913], [0.40861584564047, 611.3601636482858, 0.8350779591410551, -3.034557944041943, -0.33953697203938915], [46.62807235120426, 6.308023182021756, 5.01671850424403, -0.23877079736974396, -0.5460348132251863]] ``` where one entry is `16.964677878827604` and the other is `16.964677878827608`. Haven't looked into it, but guessing this is a numerical precision issue.
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37,329
#31793 Add support for subtracting datetime from Timestamp
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2020-10-22T02:48:06Z
2021-11-01T23:56:16Z
null
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- [x] closes #31793 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Based on the discussion in the attached issue, i've made the following changes: 1. add support for subtracting when the two items have different timezones 2. raise an error if one (but not both) timezone is naive The root cause of 31793 was that the tzinfo objects were from different libraries -- `Timestamp` makes a `pytz.UTC` whereas a datetime object might just have `datetime.timezone.utc`. These objects are not necessarily equal, even if they represent the same timezone. In addition, this change *adds* support for time-deltas where the timezone of each date is not the same. This follows the behaviour of `datetime` more closely. I reference the [python `datetime` module documentation](https://docs.python.org/3/library/datetime.html) which defines when a datetime is naive: when its `tzinfo` is `None` or a call to `item.tzinfo.utcoffset(item)` returns `None`.
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37,330
BUG: IntervalIndex.take without fill_value
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2
2020-10-22T02:56:01Z
2021-01-04T06:19:44Z
2020-10-31T18:56:21Z
MEMBER
null
- [ ] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry `IntervalIndex.take([0, 1, -1])` without explicitly passing fill_value should not fill the -1 as NA. Fixing this allows us to use the base class `take` for `IntervalIndex.take` (the original motivation)
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37,331
DOC: Remove confusing description from `core.DataFrame.iterrows`
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2
2020-10-22T06:36:01Z
2020-10-24T07:31:13Z
2020-10-24T07:31:01Z
CONTRIBUTOR
null
Current [`core.DataFrame.iterrows`](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.iterrows.html) is as follows ![image](https://user-images.githubusercontent.com/5734732/96833205-00176c00-147b-11eb-8dc3-6371b2718e76.png) However, `core.DataFrame.iterrows` actually returns an iterator which yields `(index, data)`, not `(index, data, it)`. This PRs remove such confusing description like [https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.iteritems.html?highlight=yields] - [ ] closes #xxxx (no issues found) - [ ] tests passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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37,332
REF: extract dialect validation
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1
2020-10-22T07:36:10Z
2020-11-06T15:38:43Z
2020-10-23T00:08:28Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Following https://github.com/pandas-dev/pandas/pull/36852, I extracted validation of dialect into a separate function.
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https://api.github.com/repos/pandas-dev/pandas/issues/37333
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727,141,279
MDU6SXNzdWU3MjcxNDEyNzk=
37,333
QST:bug or not? silent fail of df.iloc[].loc[] = newDataType
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2020-10-22T07:51:16Z
2021-08-13T05:17:49Z
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If I use a loc chained to a iloc I can change a value if it is of the same dtype: ```python df = pd.DataFrame([[0, 2, 3], [0, 4, 1], [10, 20, 30]], ... index=[4, 5, 6], columns=['A', 'B', 'C']) df.iloc[1].loc["B"] = 999 df A B C 4 0 2 3 5 0 999 1 6 10 20 30 ``` This changes the value to 999. However, this does not work and fails silently if the dtype is different: ```python df.iloc[1].loc["B"] = "888" df A B C 4 0 2 3 5 0 999 1 6 10 20 30 ``` The value is not changed and there is no error raised. This seems not consistent with the behavior of doing this: ```python df.iloc[1,1] = "888" df A B C 4 0 2 3 5 0 888 1 6 10 20 30 ``` the last code above changes the type of the column silently. ``` df.dtypes A int64 B object C int64 ``` Envirnt: ``` Python 3.8.5 pd.__version__ : '1.1.3' ``` I am only a beginner in pandas so I am wondering if this should be reported as a bug or requesting a feature request or if this behavior is normal.
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37,334
CLN make namespace usage in tests consistent
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2020-10-22T08:38:06Z
2020-10-22T09:16:39Z
2020-10-22T09:15:39Z
MEMBER
null
Currently, there are many test files where we use the pandas namespace inconsistently: for example, we do ``` import pandas as pd from pandas import DataFrame ``` and then one test function uses `pd.DataFrame`, the other `DataFrame`. The goal here is to be consistent: each file should either just contain pd.DataFrame, or DataFrame. Same goes for, e.g. `to_timedelta`, `Series`, ... Here are the files which have such inconsistencies. If you'd like to work on this, please choose 10-15 files at a time. **There is no need to ask for permission to work on this.** Just open a pull request, and link to this issue: write `xref #` in the pull request description. I'll do my best to keep the checklist up-to-date. List of files which may need changing (along with an example of an offending line): - [ ] pandas/tests/api/test_api.py:238: assert datetime(2015, 1, 2, 0, 0) == pd.datetime(2015, 1, 2, 0, 0) - [ ] pandas/tests/arithmetic/conftest.py:85: Float64Index([nan, inf, inf, inf, inf], dtype='float64') - [ ] pandas/tests/arithmetic/test_datetime64.py:54: dti = date_range("20130101", periods=3, tz=tz) - [ ] pandas/tests/arithmetic/test_interval.py:53:def array(left_right_dtypes): - [ ] pandas/tests/arithmetic/test_numeric.py:138: expected = pd.TimedeltaIndex(["10s", "40s", "90s"]) - [ ] pandas/tests/arithmetic/test_object.py:132: [Timestamp("2011-01-01"), Timestamp("2011-01-02"), pd.NaT], - [ ] pandas/tests/arithmetic/test_period.py:35: pi = pd.period_range("2000", periods=4) - [ ] pandas/tests/arithmetic/test_timedelta64.py:57: tdi = pd.timedelta_range("2H", periods=4) - [ ] pandas/tests/arrays/boolean/test_arithmetic.py:12: return pd.array( - [ ] pandas/tests/arrays/boolean/test_astype.py:10: arr = pd.array([True, False, None], dtype="boolean") - [ ] pandas/tests/arrays/boolean/test_comparison.py:12: return pd.array( - [ ] pandas/tests/arrays/boolean/test_construction.py:11: values = np.array([True, False, True, False], dtype="bool") - [ ] pandas/tests/arrays/boolean/test_function.py:13: a = pd.array([True, False, None], dtype="boolean") - [ ] pandas/tests/arrays/boolean/test_logical.py:14: a = pd.array([True, False, None], dtype="boolean") - [ ] pandas/tests/arrays/categorical/test_constructors.py:35: ordered = np.array([0, 1, 2]) - [ ] pandas/tests/arrays/categorical/test_indexing.py:37: expected = Categorical(["c", "b", "b", "a", "a", "c", "c", "c"], ordered=True) - [ ] pandas/tests/arrays/categorical/test_missing.py:24: tm.assert_numpy_array_equal(isna(cat), labels == -1) - [ ] pandas/tests/arrays/categorical/test_operators.py:15: factor = Categorical(["a", "b", "b", "a", "a", "c", "c", "c"], ordered=True) - [ ] pandas/tests/arrays/floating/test_arithmetic.py:27: a = pd.array([1.0, 2.0, None, 4.0, 5.0], dtype=dtype) - [ ] pandas/tests/arrays/floating/test_astype.py:10: arr = pd.array([0.1, 0.2, None], dtype="Float64") - [ ] pandas/tests/arrays/floating/test_construction.py:11: a = pd.array([1, None], dtype=pd.Float64Dtype()) - [ ] pandas/tests/arrays/floating/test_function.py:12: a = pd.array([1, 2, -3, np.nan], dtype="Float64") - [ ] pandas/tests/arrays/floating/test_to_numpy.py:16: expected = np.array([0.1, 0.2, 0.3], dtype="object") - [ ] pandas/tests/arrays/integer/test_arithmetic.py:21: a = pd.array([0, 1, None, 3, 4], dtype=dtype) - [ ] pandas/tests/arrays/integer/test_construction.py:12: a = pd.array([1, None], dtype=pd.Int64Dtype()) - [ ] pandas/tests/arrays/integer/test_dtypes.py:46: {"B": np.array([1.0, 3.0]), "C": integer_array([1, 3], dtype="Int64")}, - [ ] pandas/tests/arrays/integer/test_function.py:48: arr = np.array([1, 2, 3, 4]) - [ ] pandas/tests/arrays/interval/test_interval.py:25: (date_range("20170101", periods=3), date_range("20170102", periods=3)), - [ ] pandas/tests/arrays/masked/test_arithmetic.py:11:arrays = [pd.array([1, 2, 3, None], dtype=dtype) for dtype in tm.ALL_EA_INT_DTYPES] - [ ] pandas/tests/arrays/masked/test_arrow_compat.py:8:arrays = [pd.array([1, 2, 3, None], dtype=dtype) for dtype in tm.ALL_EA_INT_DTYPES] - [ ] pandas/tests/arrays/sparse/test_array.py:19: self.arr_data = np.array([np.nan, np.nan, 1, 2, 3, np.nan, 4, 5, np.nan, 6]) - [ ] pandas/tests/arrays/sparse/test_dtype.py:22: sparse_dtype = SparseDtype(dtype) - [ ] pandas/tests/arrays/string_/test_string.py:13: df = pd.DataFrame({"A": pd.array(["a", pd.NA, "b"], dtype="string")}) - [ ] pandas/tests/arrays/test_array.py:33: ([1, 2], object, PandasArray(np.array([1, 2], dtype=object))), - [ ] pandas/tests/arrays/test_datetimelike.py:677: arr.take([-1, 1], allow_fill=True, fill_value=pd.Period("2014Q1")) - [ ] pandas/tests/arrays/test_datetimes.py:24: arr = np.array([0, 1, 2, 3], dtype="M8[h]").astype("M8[ns]") - [ ] pandas/tests/base/test_conversion.py:126: i = CategoricalIndex([Timestamp("1999-12-31"), Timestamp("2000-12-31")]) - [ ] pandas/tests/base/test_misc.py:112: assert Index([1]).item() == 1 - [ ] pandas/tests/base/test_value_counts.py:36: expected.index = pd.Index(expected.index) - [ ] pandas/tests/computation/test_eval.py:191: result = pd.eval(ex, engine=self.engine, parser=self.parser) - [ ] pandas/tests/dtypes/test_common.py:170: assert com.is_object_dtype(np.array([], dtype=object)) - [ ] pandas/tests/dtypes/test_dtypes.py:313: dr = date_range("20130101", periods=3, tz="US/Eastern") - [ ] pandas/tests/dtypes/test_inference.py:83: (Index([1]), True, "Index"), - [ ] pandas/tests/dtypes/test_missing.py:67: assert isna(np.array(np.nan)) - [ ] pandas/tests/extension/arrow/arrays.py:119: pa.chunked_array([pa.array(result, mask=pd.isna(self._data.to_pandas()))]) - [ ] pandas/tests/extension/base/getitem.py:134: expected = data[np.array([], dtype="int64")] - [ ] pandas/tests/extension/base/methods.py:33: data = data[:10].unique() - [ ] pandas/tests/extension/base/missing.py:13: result = pd.isna(data_missing) - [ ] pandas/tests/extension/base/setitem.py:47: data[np.array([], dtype=int)] = [] - [ ] pandas/tests/extension/decimal/test_decimal.py:72: # need to convert array([Decimal(NaN)], dtype='object') to np.NaN - [ ] pandas/tests/extension/list/array.py:44: if not isinstance(val, self.dtype.type) and not pd.isna(val): - [ ] pandas/tests/extension/test_boolean.py:36: return pd.array(make_data(), dtype=dtype) - [ ] pandas/tests/extension/test_categorical.py:51: return Categorical(make_data()) - [ ] pandas/tests/extension/test_floating.py:44: return pd.array(make_data(), dtype=dtype) - [ ] pandas/tests/extension/test_numpy.py:48: return PandasArray(np.array([np.nan, (1,)], dtype=object)) - [ ] pandas/tests/extension/test_sparse.py:29: return SparseDtype() - [ ] pandas/tests/frame/apply/test_frame_apply.py:67: "A": date_range("20130101", periods=3), - [ ] pandas/tests/frame/indexing/test_categorical.py:17: labels = Categorical([f"{i} - {i + 499}" for i in range(0, 10000, 500)]) - [ ] pandas/tests/frame/indexing/test_indexing.py:65: msg = "\"None of [Index(['baf'], dtype='object')] are in the [columns]\"" - [ ] pandas/tests/frame/indexing/test_sparse.py:50: expected = np.full(cols, SparseDtype(dtype, fill_value=0)) - [ ] pandas/tests/frame/indexing/test_xs.py:59: # no columns but Index(dtype=object) - [ ] pandas/tests/frame/methods/test_align.py:89: tm.assert_index_equal(bf.index, Index([])) - [ ] pandas/tests/frame/methods/test_append.py:132: df1 = DataFrame({"bar": Timestamp("20130101")}, index=range(5)) - [ ] pandas/tests/frame/methods/test_cov_corr.py:73: "other_column", [pd.array([1, 2, 3]), np.array([1.0, 2.0, 3.0])] - [ ] pandas/tests/frame/methods/test_describe.py:249: start = Timestamp(2018, 1, 1) - [ ] pandas/tests/frame/methods/test_diff.py:78: dti = pd.date_range("2016-01-01", periods=4, tz=tz) - [ ] pandas/tests/frame/methods/test_drop.py:90: expected = Index(["a", "b", "c"], name="first") - [ ] pandas/tests/frame/methods/test_quantile.py:247: [Timestamp("2010-07-02 12:00:00"), 2.5], index=["a", "b"], name=0.5 - [ ] pandas/tests/frame/methods/test_replace.py:964: Timestamp("20130102", tz="US/Eastern"), - [ ] pandas/tests/frame/methods/test_reset_index.py:42: expected["idx"] = expected["idx"].apply(lambda d: Timestamp(d, tz=tz)) - [ ] pandas/tests/frame/methods/test_sort_values.py:243: df = DataFrame({"x": pd.Categorical(np.repeat([1, 2, 3, 4], 5), ordered=True)}) - [ ] pandas/tests/frame/test_analytics.py:68: df = DataFrame({"b": date_range("1/1/2001", periods=2)}) - [ ] pandas/tests/frame/test_constructors.py:94: ([[]], RangeIndex(1), RangeIndex(0)), - [ ] pandas/tests/frame/test_dtypes.py:62: "A": date_range("20130101", periods=3), - [ ] pandas/tests/frame/test_query_eval.py:46: result = df.eval("A+1") - [ ] pandas/tests/frame/test_reshape.py:64: tm.assert_index_equal(result.columns, Index(["A", "B"], name=0)) - [ ] pandas/tests/frame/test_to_csv.py:40: def read_csv(self, path, **kwargs): - [ ] pandas/tests/generic/test_finalize.py:35: (np.array([0], dtype="float64")), - [ ] pandas/tests/generic/test_generic.py:792: df1["start"] = date_range("2000-1-1", periods=10, freq="T") - [ ] pandas/tests/generic/test_series.py:65: o = Series(date_range("20130101", periods=3)) - [ ] pandas/tests/groupby/aggregate/test_aggregate.py:135: exp = Series([], dtype=np.float64, index=pd.Index([], dtype=np.float64)) - [ ] pandas/tests/groupby/aggregate/test_other.py:109: "time": date_range("1/1/2011", periods=8, freq="H"), - [ ] pandas/tests/groupby/test_apply.py:43: exp_idx = pd.Index( - [ ] pandas/tests/groupby/test_categorical.py:88: cats = Categorical( - [ ] pandas/tests/groupby/test_counting.py:240: index=Index([0.0, 3.0, 4.0, 5.0], name="B"), data={"A": [1, 1, 1, 1]} - [ ] pandas/tests/groupby/test_function.py:66: exp_df = DataFrame([exp] * 2, columns=["val"], index=Index(["a", "b"], name="key")) - [ ] pandas/tests/groupby/test_groupby.py:19: result = repr(pd.Grouper(key="A", level="B")) - [ ] pandas/tests/groupby/test_grouping.py:159: dates = date_range(d0, date.today()) - [ ] pandas/tests/groupby/test_missing.py:14: columns=pd.Index(["type", "a", "b"], name="idx"), - [ ] pandas/tests/groupby/test_nth.py:14: expected.index = Index(["bar", "foo"], name="A") - [ ] pandas/tests/groupby/test_pipe.py:35: index = Index(["bar", "foo"], dtype="object", name="A") - [ ] pandas/tests/groupby/test_quantile.py:48: [a_expected, b_expected], columns=["val"], index=Index(["a", "b"], name="key") - [ ] pandas/tests/groupby/test_timegrouper.py:54: index=date_range( - [ ] pandas/tests/groupby/transform/test_transform.py:103: "d": pd.date_range("2014-1-1", "2014-1-4"), - [ ] pandas/tests/indexes/base_class/test_reshape.py:14: index = pd.Index([1, 2, 3]) - [ ] pandas/tests/indexes/base_class/test_setops.py:15: idx1 = pd.Index(["a", "b"]) - [ ] pandas/tests/indexes/categorical/test_category.py:24: return CategoricalIndex(list("aabbca"), categories=categories, ordered=ordered) - [ ] pandas/tests/indexes/categorical/test_formats.py:12: idx = pd.CategoricalIndex(["a", "bb", "ccc"]) - [ ] pandas/tests/indexes/categorical/test_indexing.py:14: idx = pd.CategoricalIndex([1, 2, 3], name="xxx") - [ ] pandas/tests/indexes/categorical/test_map.py:20: index = CategoricalIndex(data, categories=categories, ordered=ordered) - [ ] pandas/tests/indexes/common.py:96: result = pd.Index(expected) - [ ] pandas/tests/indexes/datetimes/test_astype.py:24: idx = DatetimeIndex(["2016-05-16", "NaT", NaT, np.NaN], name="idx") - [ ] pandas/tests/indexes/datetimes/test_constructors.py:30: dt_cls([pd.NaT, pd.Timestamp("2011-01-01")], freq="D") - [ ] pandas/tests/indexes/datetimes/test_date_range.py:32: rng = date_range("20090415", "20090519", tz="US/Eastern") - [ ] pandas/tests/indexes/datetimes/test_datetime.py:17: index = date_range("20130101", periods=3, tz="US/Eastern") - [ ] pandas/tests/indexes/datetimes/test_indexing.py:20: idx = pd.date_range( - [ ] pandas/tests/indexes/datetimes/test_misc.py:17: idx = pd.date_range( - [ ] pandas/tests/indexes/datetimes/test_ops.py:44: rng = date_range("1/1/2000", "1/1/2001") - [ ] pandas/tests/indexes/datetimes/test_setops.py:57: rng1 = pd.date_range("1/1/2000", freq="D", periods=5, tz=tz) - [ ] pandas/tests/indexes/datetimes/test_shift.py:23: idx = pd.DatetimeIndex([], name="xxx", tz=tz) - [ ] pandas/tests/indexes/datetimes/test_timezones.py:55: idx = DatetimeIndex(dates) - [ ] pandas/tests/indexes/interval/test_interval.py:57: ivs = [Interval(l, r, closed) for l, r in zip(range(10), range(1, 11))] - [ ] pandas/tests/indexes/multi/test_analytics.py:35: major_axis = Index(list(range(4))) - [ ] pandas/tests/indexes/multi/test_constructors.py:21: expected = Index(["foo", "bar", "baz", "qux"], name="first") - [ ] pandas/tests/indexes/multi/test_get_level_values.py:22: expected = Index(["foo", "foo", "bar", "baz", "qux", "qux"], name="first") - [ ] pandas/tests/indexes/multi/test_get_set.py:289: expected = pd.MultiIndex(levels=[[0, 1]], codes=[[0, 1]], names=["first"]) - [ ] pandas/tests/indexes/multi/test_indexing.py:67: index = MultiIndex( - [ ] pandas/tests/indexes/multi/test_integrity.py:161: # isna(MI) - [ ] pandas/tests/indexes/multi/test_join.py:10: "other", [Index(["three", "one", "two"]), Index(["one"]), Index(["one", "three"])] - [ ] pandas/tests/indexes/multi/test_missing.py:42: idx = MultiIndex( - [ ] pandas/tests/indexes/multi/test_monotonic.py:37: i = MultiIndex( - [ ] pandas/tests/indexes/multi/test_sorting.py:178: mi = MultiIndex( - [ ] pandas/tests/indexes/period/test_formats.py:117: exp1 = """Series([], dtype: period[D])""" - [ ] pandas/tests/indexes/period/test_indexing.py:28: idx = period_range("2011-01-01", "2011-01-31", freq="D", name="idx") - [ ] pandas/tests/indexes/period/test_ops.py:32: idx = PeriodIndex(np.repeat(idx._values, range(1, len(idx) + 1)), freq="H") - [ ] pandas/tests/indexes/ranges/test_indexing.py:11: index = RangeIndex(start=0, stop=20, step=2) - [ ] pandas/tests/indexes/ranges/test_range.py:108: expected = pd.Index([0, pd.NaT, 1, 2, 3, 4], dtype=object) - [ ] pandas/tests/indexes/test_base.py:50: return Index(list("abcde")) - [ ] pandas/tests/indexes/test_numeric.py:42: expected = Float64Index(arr) - [ ] pandas/tests/indexes/timedeltas/test_astype.py:21: idx = timedelta_range(start="1 days", periods=4, freq="D", name="idx") - [ ] pandas/tests/indexes/timedeltas/test_constructors.py:17: TimedeltaIndex([1, 3, 7], unit) - [ ] pandas/tests/indexes/timedeltas/test_formats.py:46: exp1 = """Series([], dtype: timedelta64[ns])""" - [ ] pandas/tests/indexes/timedeltas/test_indexing.py:15: idx = timedelta_range("1 day", "31 day", freq="D", name="idx") - [ ] pandas/tests/indexes/timedeltas/test_ops.py:16: idx = timedelta_range("1 days 09:00:00", freq="H", periods=10) - [ ] pandas/tests/indexes/timedeltas/test_scalar_compat.py:19: rng = timedelta_range("1 days, 10:11:12.100123456", periods=2, freq="s") - [ ] pandas/tests/indexes/timedeltas/test_setops.py:14: i1 = timedelta_range("1day", periods=5) - [ ] pandas/tests/indexes/timedeltas/test_shift.py:17: idx = pd.TimedeltaIndex([], name="xxx") - [ ] pandas/tests/indexing/multiindex/test_multiindex.py:63: Index(["R1", "R2", np.nan, "R4"], name="a"), - [ ] pandas/tests/indexing/test_categorical.py:101: exp = np.array([4, 3, 2, 1], dtype=np.int64) - [ ] pandas/tests/indexing/test_check_indexer.py:13: ([1, 2], np.array([1, 2], dtype=np.intp)), - [ ] pandas/tests/indexing/test_datetime.py:18: idx = date_range("20010101", periods=4, tz="UTC") - [ ] pandas/tests/indexing/test_iloc.py:238: df = concat([df1, df2], axis=1) - [ ] pandas/tests/indexing/test_indexing.py:39: df.loc[df.index[2:5], "bar"] = np.array([2.33j, 1.23 + 0.1j, 2.2, 1.0]) - [ ] pandas/tests/indexing/test_loc.py:332: expected = df.loc[np.array(mask)] - [ ] pandas/tests/internals/test_internals.py:108: values = Categorical([1, 1, 2, 2, 3, 3, 3, 3, 4, 4]) - [ ] pandas/tests/io/excel/test_readers.py:842: si = Index( - [ ] pandas/tests/io/excel/test_xlrd.py:30: with ExcelFile(book, engine=engine) as xl: - [ ] pandas/tests/io/formats/test_format.py:185: with option_context( - [ ] pandas/tests/io/formats/test_printing.py:112: with cf.option_context("display.unicode.ambiguous_as_wide", True): - [ ] pandas/tests/io/formats/test_to_html.py:197: with option_context("display.multi_sparse", multi_sparse): - [ ] pandas/tests/io/json/test_pandas.py:72: result = read_json(df.to_json(orient=orient), orient=orient) - [ ] pandas/tests/io/json/test_readlines.py:21: result = read_json('{"a": 1, "b": 2}\n{"b":2, "a" :1}\n', lines=True) - [ ] pandas/tests/io/parser/test_c_parser_only.py:35: parser.read_csv(StringIO(malformed)) - [ ] pandas/tests/io/parser/test_parse_dates.py:448: Timestamp("05/31/2012, 15:30:00.029"), - [ ] pandas/tests/io/parser/test_read_fwf.py:30: result = read_fwf(StringIO(data)) - [ ] pandas/tests/io/pytables/test_store.py:69: with HDFStore(path) as store: - [ ] pandas/tests/io/pytables/test_timezones.py:47: Timestamp("20130102 2:00:00", tz=gettz("US/Eastern")) - [ ] pandas/tests/io/test_clipboard.py:152: result = read_clipboard(sep=sep or "\t", index_col=0, encoding=encoding) - [ ] pandas/tests/io/test_feather.py:40: result = read_feather(path, **read_kwargs) - [ ] pandas/tests/io/test_parquet.py:191: actual = read_parquet(path, **read_kwargs) - [ ] pandas/tests/io/test_sql.py:607: iris_frame = sql.read_sql_query("SELECT * FROM iris", self.conn) - [ ] pandas/tests/io/test_stata.py:52: parsed_114 = read_stata(dta14_114, convert_dates=True) - [ ] pandas/tests/plotting/test_frame.py:508: idx = date_range(start="2014-07-01", freq="M", periods=10) - [ ] pandas/tests/reductions/test_reductions.py:58: expected = pd.Period(ordinal=getattr(obj.asi8, opname)(), freq=obj.freq) - [ ] pandas/tests/resample/test_datetime_index.py:44: b = Grouper(freq=Minute(5)) - [ ] pandas/tests/resample/test_deprecated.py:43: idx = pd.date_range("2001-01-01", periods=4, freq="T") - [ ] pandas/tests/resample/test_period_index.py:45: new_index = date_range(start=start, end=end, freq=freq, closed="left") - [ ] pandas/tests/resample/test_resample_api.py:11:dti = date_range(start=datetime(2005, 1, 1), end=datetime(2005, 1, 10), freq="Min") - [ ] pandas/tests/resample/test_resampler_grouper.py:16: index=date_range("1/1/2000", freq="s", periods=40), - [ ] pandas/tests/resample/test_time_grouper.py:13:test_series = Series(np.random.randn(1000), index=date_range("1/1/2000", periods=1000)) - [ ] pandas/tests/resample/test_timedelta.py:17: index=timedelta_range("0 day", periods=4, freq="1T"), - [ ] pandas/tests/reshape/merge/test_join.py:412: ex_index = Index(index1.values).union(Index(index2.values)) - [ ] pandas/tests/reshape/merge/test_merge.py:127: result = pd.merge(df_empty, df_a, left_index=True, right_index=True) - [ ] pandas/tests/reshape/merge/test_merge_asof.py:21: x.time = to_datetime(x.time) - [ ] pandas/tests/reshape/merge/test_multi.py:110: expected = pd.merge(left, right.reset_index(), on=on_cols, how=join_type) - [ ] pandas/tests/reshape/test_concat.py:50: pd.Timestamp("2011-01-01"), - [ ] pandas/tests/reshape/test_cut.py:29: result = cut(data, 4, labels=False) - [ ] pandas/tests/reshape/test_melt.py:29: result = melt(self.df) - [ ] pandas/tests/reshape/test_pivot.py:31: return Categorical(pd.IntervalIndex.from_arrays(left, right, closed)) - [ ] pandas/tests/reshape/test_qcut.py:127: exp_levels = np.array( - [ ] pandas/tests/reshape/test_union_categoricals.py:42: result = union_categoricals([box(Categorical(a)), box(Categorical(b))]) - [ ] pandas/tests/scalar/period/test_period.py:22: i1 = Period("1/1/2005", freq="M") - [ ] pandas/tests/scalar/test_na_scalar.py:102: value = np.array([value]) - [ ] pandas/tests/scalar/timedelta/test_arithmetic.py:29: Timedelta(10, unit="s"), - [ ] pandas/tests/scalar/timestamp/test_unary_ops.py:327: # datetime.timestamp() converts in the local timezone - [ ] pandas/tests/series/apply/test_series_apply.py:28: s = Series(dtype=object, name="foo", index=pd.Index([], name="bar")) - [ ] pandas/tests/series/indexing/test_datetime.py:29: assert s[Timestamp(datetime(2009, 1, 2))] == 48 - [ ] pandas/tests/series/indexing/test_indexing.py:73: pd.date_range("2011-01-01", periods=3, tz="US/Eastern"), index=["a", "b", "c"] - [ ] pandas/tests/series/indexing/test_where.py:182: [Timestamp("2017-01-01"), pd.NaT, Timestamp("2017-01-02")], - [ ] pandas/tests/series/methods/test_interpolate.py:552: [1, np.nan, 3], index=date_range("1/1/2000", periods=3, tz=tz_naive_fixture) - [ ] pandas/tests/series/methods/test_quantile.py:28: assert q == Timestamp("2000-01-10 19:12:00") - [ ] pandas/tests/series/methods/test_shift.py:76: index = date_range("2000-01-01", periods=5) - [ ] pandas/tests/series/methods/test_truncate.py:76: rng = pd.date_range("2011-01-01", "2012-01-01", freq="W") - [ ] pandas/tests/series/methods/test_value_counts.py:88: values = pd.Categorical([1, 2, 3, 1, 1, 3], ordered=True) - [ ] pandas/tests/series/test_api.py:158: [x[1] for x in _d], index=pd.Index([x[0] for x in _d], tupleize_cols=False) - [ ] pandas/tests/series/test_arithmetic.py:244: dt = Series(date_range("2012-1-1", periods=3, freq="D")) - [ ] pandas/tests/series/test_constructors.py:137: # these are Index() and RangeIndex() which don't compare type equal - [ ] pandas/tests/series/test_datetime_values.py:85: Series(date_range("20130101", periods=5), name="xxx"), - [ ] pandas/tests/series/test_io.py:15: def read_csv(self, path, **kwargs): - [ ] pandas/tests/series/test_logical_ops.py:164: result = left & pd.Index(right) - [ ] pandas/tests/series/test_missing.py:215: tm.assert_series_equal(result, ts[pd.notna(ts)]) - [ ] pandas/tests/series/test_period.py:19: [pd.Period("2011-01-01", freq="D"), pd.Period("2011-02-01", freq="D")] - [ ] pandas/tests/series/test_repr.py:169: with pd.option_context("max_rows", None): - [ ] pandas/tests/series/test_timeseries.py:19: rng = date_range("1/1/2000", "3/1/2000", freq="B") - [ ] pandas/tests/series/test_ufunc.py:246: arr = np.array([Dummy(0), Dummy(1)]) - [ ] pandas/tests/test_algos.py:43: codes, uniques = algos.factorize(["a", "b", "b", "a", "a", "c", "c", "c"]) - [ ] pandas/tests/test_multilevel.py:307: index=pd.Index([2], name="ix1"), - [ ] pandas/tests/test_strings.py:189: values = np.array(values, dtype=object) # object dtype to avoid casting - [ ] pandas/tests/tools/test_to_datetime.py:43: results1 = [Timestamp("20000101"), Timestamp("20000201"), Timestamp("20000301")] - [ ] pandas/tests/tools/test_to_numeric.py:58: result = to_numeric(ser, **input_kwargs) - [ ] pandas/tests/tools/test_to_timedelta.py:14: result = to_timedelta(["", ""]) - [ ] pandas/tests/window/test_expanding.py:53: e = Expanding(Series([2, 4, 6]), window=2) - [ ] pandas/tests/window/test_rolling.py:81: {"value": np.arange(n)}, index=pd.date_range("2015-12-24", periods=n, freq="D") ---- See #37335 for an example pull request
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MDExOlB1bGxSZXF1ZXN0NTA4MTM3MjEx
37,335
CLN make namespace usage in tests consistent
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2020-10-22T09:09:17Z
2020-10-22T09:18:56Z
2020-10-22T09:16:21Z
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Example pull request for #37334
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37,336
[WIP] Arrow string array: Split array and dtype
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2020-10-22T09:10:43Z
2020-10-22T19:14:47Z
2020-10-22T19:14:47Z
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CI testing before considering including in #35259
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37,337
[WIP] Arrow string array: Common base class
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2020-10-22T09:57:56Z
2020-10-22T19:14:35Z
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CI testing alternative to #37336
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2020-10-22T19:36:25Z
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``` =========================== short test summary info ============================ FAILED pandas/tests/computation/test_eval.py::TestEvalNumexprPandas::test_binary_arith_ops = 1 failed, 14730 passed, 11 skipped, 1 xfailed, 37 warnings in 672.01s (0:11:12) = ``` e.g. https://travis-ci.org/github/pandas-dev/pandas/jobs/737965996
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TST: parametrize slow test
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2020-10-22T15:32:20Z
2020-10-23T15:37:31Z
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MEMBER
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Broken off from #37224
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2020-10-22T16:11:39Z
2020-10-22T16:15:02Z
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- [X] closes #37316
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MDU6SXNzdWU3Mjc1OTQzMzk=
37,343
BUG: groupby __iter__ on pandas 1.1.x not propagating _metadata on DataFrame subclasses
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6
2020-10-22T17:43:41Z
2020-11-04T13:22:55Z
2020-11-04T13:22:55Z
NONE
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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. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python In [1]: import pandas as pd ...: ...: class SubclassedDataFrame2(pd.DataFrame): ...: ...: # temporary properties ...: _internal_names = pd.DataFrame._internal_names + ['internal_cache'] ...: _internal_names_set = set(_internal_names) ...: ...: # normal properties ...: _metadata = ['added_property'] ...: ...: @property ...: def _constructor(self): ...: return SubclassedDataFrame2 ...: In [2]: df = SubclassedDataFrame2({'A': [1, 2, 3], 'B': [1, 1, 2], 'C': [7, 8, 9]}) ...: df.added_property = "hello" ...: for i, d in df.groupby("B"): ...: assert d.added_property == "hello" ...: --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-2-bf64fc505324> in <module> 2 df.added_property = "hello" 3 for i, d in df.groupby("B"): ----> 4 assert d.added_property == "hello" 5 ~\RMS-Python\lib\site-packages\pandas\core\generic.py in __getattr__(self, name) 5133 or name in self._accessors 5134 ): -> 5135 return object.__getattribute__(self, name) 5136 else: 5137 if self._info_axis._can_hold_identifiers_and_holds_name(name): AttributeError: 'SubclassedDataFrame2' object has no attribute 'added_property' ``` #### Problem description Under pandas 1.0.x the above is working, on 1.1.x, the _metadata is not propagated to the split frames. I think this is a known issue with groupby and `__finalize__`, but this specific behavior with `__iter__` is a regression from 1.0.x behavior on DataFrame subclasses. #### Expected Output Assert statements above are passing, with metadata propagated to the split dataframe #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.7.7.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.19041 machine : AMD64 processor : AMD64 Family 23 Model 113 Stepping 0, AuthenticAMD byteorder : little LC_ALL : None LANG : None LOCALE : None.None pandas : 1.1.3 numpy : 1.18.1 pytz : 2020.1 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 Cython : 0.29.17 pytest : 5.4.1 hypothesis : 5.36.1 sphinx : 2.4.4 blosc : None feather : None xlsxwriter : 1.2.8 lxml.etree : 4.5.0 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : 4.9.0 bottleneck : 1.3.2 fsspec : 0.8.0 fastparquet : None gcsfs : None matplotlib : 3.1.3 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.16 tables : 3.6.1 tabulate : None xarray : None xlrd : 1.2.0 xlwt : 1.3.0 numba : 0.49.0 </details>
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ENH: support different integer types in sql
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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. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Problem description I ran across a situation where I needed to ensure that a PostgreSQL database table retained the same data types when being read using pd.read_sql() or pd.read_sql_table(). I found that reading a table with a column type of INTEGER (sqlalchemy.types.Integer), it was converted to dtype('int64') in pandas, which subsequently got written back to the database ( df.to_sql() ) as a BigInt (sqlalchemy.types.BigInteger). I saw that “refining integer size” was listed as a TODO item in the code, and would be happy to provide a PR if it would be accepted. I was able to resolve this with minor modifications to io/sql.py in _harmonize_columns() and _get_dtype(): ``` def _harmonize_columns(self, parse_dates=None): … elif len(df_col) == df_col.count(): # No NA values, can convert ints and bools if col_type is np.dtype("int64") or col_type is np.dtype("int32") or col_type is bool: self.frame[col_name] = df_col.astype(col_type, copy=False) def _get_dtype(self, sqltype): from sqlalchemy.types import TIMESTAMP, Boolean, Date, DateTime, Float, Integer, BigInteger, SmallInteger … elif isinstance(sqltype, BigInteger): return np.dtype("int64") elif isinstance(sqltype, Integer): return np.dtype("int32") elif isinstance(sqltype, SmallInteger): return np.dtype("int16") … ```` ![Changes in diff format from master branch](https://user-images.githubusercontent.com/36243295/96911603-10294e80-146f-11eb-8a19-77e15d5be257.png)
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Update sql.py to distinguish between BigInt, Integer, and SmallInt
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4
2020-10-22T18:24:12Z
2021-01-09T23:02:01Z
2021-01-09T23:01:54Z
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry This is to resolve #37344. I've never contributed to Pandas before, so may need guidance to proceed.
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BUG: .values upcasts dtype in non-mixed-dtype subset of mixed-dtype DataFrames
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2021-08-13T05:19:06Z
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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. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python import pandas as pd data = pd.DataFrame({"a": [1], "b": [0.1]}) print(type(data.loc[0, "a"])) # <class 'numpy.int64'> print(data.loc[0, ["a"]].values.dtype) # float64 ``` #### Problem description `.values` seems to upcast dtype to a common dtype even when only a subset of columns (with the same dtype) are exported? #### Expected Output int64 for the second print. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.8.6.final.0 python-bits : 64 OS : Linux OS-release : 4.13.0-36-generic Version : #40~16.04.1-Ubuntu SMP Fri Feb 16 23:25:58 UTC 2018 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 : 20.2.1 setuptools : 49.2.1 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 : 7.18.1 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.2 numexpr : 2.7.1 odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.3 sqlalchemy : None tables : 3.6.1 tabulate : None xarray : None xlrd : None xlwt : None numba : None </details>
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CI: xfail test_binary_arith_ops
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2020-10-22T19:37:39Z
2020-10-22T23:50:48Z
2020-10-22T22:41:06Z
MEMBER
null
xref #37328, #37338
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37,348
BUG: comparison of int dataframe to string yield unpredictable error (ValueError: unknown type str128)
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3
2020-10-22T20:14:04Z
2021-10-16T14:46:40Z
2021-10-16T14:46:40Z
NONE
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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 ```python import pandas as pd import numpy as np pd.DataFrame(range(10**1), dtype=np.int64)=='' # OK, just a FutureWarning pd.DataFrame(range(10**2), dtype=np.int64)=='' # OK, just a FutureWarning pd.DataFrame(range(10**3), dtype=np.int64)=='' # OK, just a FutureWarning pd.DataFrame(range(10**4), dtype=np.int64)=='' # OK, just a FutureWarning # pd.DataFrame(range(10**5), dtype=np.int64)=='' # ValueError: unknown type str32 # pd.DataFrame(range(10**5), dtype=np.int64)==' ' # ValueError: unknown type str64 pd.DataFrame(range(10**5), dtype=np.int64)==' ' # ValueError: unknown type str128 /home/ubuntu/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/computation/expressions.py:68: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison return op(a, b) /home/ubuntu/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/computation/expressions.py:68: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison return op(a, b) /home/ubuntu/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/computation/expressions.py:68: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison return op(a, b) /home/ubuntu/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/computation/expressions.py:68: FutureWarning: elementwise comparison failed; returning scalar instead, but in the future will perform elementwise comparison return op(a, b) --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-104-1641071c93d2> in <module> 5 # pd.DataFrame(range(10**5), dtype=np.int64)=='' # ValueError: unknown type str32 6 # pd.DataFrame(range(10**5), dtype=np.int64)==' ' # ValueError: unknown type str64 ----> 7 pd.DataFrame(range(10**5), dtype=np.int64)==' ' # ValueError: unknown type str128 ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/ops/__init__.py in f(self, other) 702 703 # See GH#4537 for discussion of scalar op behavior --> 704 new_data = dispatch_to_series(self, other, op, axis=axis) 705 return self._construct_result(new_data) 706 ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/ops/__init__.py in dispatch_to_series(left, right, func, axis) 263 if not is_list_like(right): 264 # i.e. scalar, faster than checking np.ndim(right) == 0 --> 265 bm = left._mgr.apply(array_op, right=right) 266 return type(left)(bm) 267 ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/internals/managers.py in apply(self, f, align_keys, **kwargs) 402 403 if callable(f): --> 404 applied = b.apply(f, **kwargs) 405 else: 406 applied = getattr(b, f)(**kwargs) ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/internals/blocks.py in apply(self, func, **kwargs) 343 """ 344 with np.errstate(all="ignore"): --> 345 result = func(self.values, **kwargs) 346 347 return self._split_op_result(result) ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/ops/array_ops.py in comparison_op(left, right, op) 244 warnings.simplefilter("ignore", DeprecationWarning) 245 with np.errstate(all="ignore"): --> 246 res_values = na_arithmetic_op(lvalues, rvalues, op, is_cmp=True) 247 248 return res_values ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/ops/array_ops.py in na_arithmetic_op(left, right, op, is_cmp) 140 141 try: --> 142 result = expressions.evaluate(op, left, right) 143 except TypeError: 144 if is_cmp: ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/computation/expressions.py in evaluate(op, a, b, use_numexpr) 228 use_numexpr = use_numexpr and _bool_arith_check(op_str, a, b) 229 if use_numexpr: --> 230 return _evaluate(op, op_str, a, b) # type: ignore 231 return _evaluate_standard(op, op_str, a, b) 232 ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/pandas/core/computation/expressions.py in _evaluate_numexpr(op, op_str, a, b) 110 f"a_value {op_str} b_value", 111 local_dict={"a_value": a_value, "b_value": b_value}, --> 112 casting="safe", 113 ) 114 ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/numexpr/necompiler.py in evaluate(ex, local_dict, global_dict, out, order, casting, **kwargs) 820 # Create a signature 821 signature = [(name, getType(arg)) for (name, arg) in --> 822 zip(names, arguments)] 823 824 # Look up numexpr if possible. ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/numexpr/necompiler.py in <listcomp>(.0) 819 820 # Create a signature --> 821 signature = [(name, getType(arg)) for (name, arg) in 822 zip(names, arguments)] 823 ~/miniconda3/envs/genomics.py3/lib/python3.7/site-packages/numexpr/necompiler.py in getType(a) 701 if kind == 'S': 702 return bytes --> 703 raise ValueError("unknown type %s" % a.dtype.name) 704 705 ValueError: unknown type str128 ``` #### Problem description There is an error with an unclear message raised in unpredictable conditions (has to do with dataframe size). Either an informative error message should be raised (the error message itself seems buggy and somehow converts the string size to a supposed data type) #### Expected Output #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 2a7d3326dee660824a8433ffd01065f8ac37f7d6 python : 3.7.3.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-1028-aws Version : #29~18.04.1-Ubuntu SMP Tue Oct 6 17:14:23 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : C.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.2 numpy : 1.19.1 pytz : 2019.1 dateutil : 2.8.0 pip : 19.1.1 setuptools : 41.0.1 Cython : None pytest : None hypothesis : None sphinx : 2.1.2 blosc : None feather : None xlsxwriter : None lxml.etree : 4.3.4 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.1 IPython : 7.8.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : 0.8.4 fastparquet : 0.4.1 gcsfs : None matplotlib : 3.1.0 numexpr : 2.6.9 odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.2 sqlalchemy : 1.3.9 tables : 3.5.2 tabulate : None xarray : 0.14.1 xlrd : 1.2.0 xlwt : None numba : 0.48.0 </details>
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727,728,397
MDExOlB1bGxSZXF1ZXN0NTA4NTY1MDEy
37,349
TST: fixturize/parametrize test_eval to the bone
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1
2020-10-22T21:19:39Z
2020-10-22T23:50:18Z
2020-10-22T23:30:07Z
MEMBER
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Might help us track down the failing test there.
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DISC: Use of assertions in user-facing code
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There are a variety of places in the code base where we have some bare assertions that can be somewhat confusing when encountered by end-users (e.g., https://github.com/pandas-dev/pandas/issues/35509). As @WillAyd pointed out these are sometimes useful in convincing mypy of something's type, but is this nonetheless something we want to avoid as a general rule? If indeed the assertion is valid then it shouldn't actually raise, but if it can then probably we could come up with a more appropriate error type / message than an empty assertion.
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CI/CLN: Add more test file linting
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3
2020-10-23T01:00:41Z
2020-10-23T17:05:23Z
2020-10-23T03:16:50Z
MEMBER
null
Fixing use of pd.Index when Index is imported directly
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2020-10-23T01:25:57Z
2020-10-23T02:12:31Z
2020-10-23T02:12:28Z
MEMBER
null
Should help fix red CI on master
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TST/REF: collect tests by method, some misplaced
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0
2020-10-23T02:26:45Z
2020-10-23T18:06:47Z
2020-10-23T17:18:33Z
MEMBER
null
Looking to get rid of some more of the not-obviously-scoped test files
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18
2020-10-23T04:14:28Z
2020-11-18T20:36:45Z
2020-11-18T18:21:51Z
MEMBER
null
- [x] closes #8628 - [ ] tests added / passed - [x] benchmarks added - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry To illustrate the speed-up, the set-up is (from OP): ```python import numpy as np import pandas as pd rng = np.random.default_rng() df = pd.DataFrame( rng.choice(np.array(list("abcde")), 4_000_000).reshape(1_000_000, 4), columns=list("ABCD"), ) for col in df.columns: df[col] = df[col].astype("category") ``` On master ``` python In [5]: %timeit [df[col].astype('unicode') for col in df.columns] 250 ms ± 601 µs per loop (mean ± std. dev. of 7 runs, 1 loop each) ``` versus on this branch ``` python In [5]: %timeit [df[col].astype('unicode') for col in df.columns] 5.38 ms ± 47 µs per loop (mean ± std. dev. of 7 runs, 100 loops each) ```
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727,897,780
MDExOlB1bGxSZXF1ZXN0NTA4NzA0NzUy
37,356
API: require timezone match in DatetimeArray.take
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0
2020-10-23T04:23:07Z
2020-10-23T18:07:47Z
2020-10-23T17:19:47Z
MEMBER
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Consistent with #37299
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37,357
DOC: update development documentation for link to built docs #37248
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2
2020-10-23T07:10:36Z
2020-10-24T07:28:07Z
2020-10-24T07:27:52Z
CONTRIBUTOR
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- [x] closes #37248 cc: @jreback
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37,358
DOC mention pre-commit as a way to run (some) code checks
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0
2020-10-23T07:18:58Z
2020-11-10T09:42:07Z
2020-11-10T09:42:07Z
MEMBER
null
xref this comment https://github.com/pandas-dev/pandas/pull/37240#discussion_r510518893 > as a followup we might want to update the contributing docs to put a pointer to these types of checks here (e.g. rather than just mentioning code_checks.sh) esp as we are using these a lot more now
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37,359
REGR: Notebook (html) repr of DataFrame no longer follows min_rows/max_rows settings
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2020-10-23T08:50:45Z
2020-11-13T05:45:48Z
2020-11-13T05:45:48Z
MEMBER
null
On master, the html repr in notebooks of a DataFrame is no longer following the min_rows/max_rows logic (see https://pandas.pydata.org/docs/dev/user_guide/options.html#frequently-used-options). If you have a DataFrame with many rows, it incorrectly shows 60 (max_rows) rows in the truncated repr intead of 10 (min_rows). cc @ivanovmg (might be related to the refactoring you have been doing, but to be clear, I didn't check if this is actually the case!)
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TST: moved file test_concat.py to folder ./concat/ (#37243)
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5
2020-10-23T10:05:18Z
2020-10-23T15:27:44Z
2020-10-23T15:27:14Z
CONTRIBUTOR
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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37,361
CLN Apply style to Jupyter notebook
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11
2020-10-23T10:26:29Z
2021-01-03T18:06:48Z
2020-11-26T15:08:02Z
MEMBER
null
We apply many style checks to our source code files / Python snippets in documentation, so I've applied them to the (lone) Jupyter notebook. Not adding anything to CI as it's arguably not worth it for just a single file
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CI autoupdate pre-commit versions
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2
2020-10-23T10:57:19Z
2020-11-01T10:32:02Z
2020-10-31T23:06:13Z
MEMBER
null
Rather than manually updating versions of hooks when new ones come out, we can make a GitHub action to open a PR to do this automatically every Monday. For this to work, we will need whoever owns the repo to [create an access token](https://github.com/technote-space/create-pr-action#github_token) and add it as secret `ACTION_TRIGGER_TOKEN` to the repo - see screenshot below for an example ![image](https://user-images.githubusercontent.com/33491632/96995872-c9972b00-1526-11eb-9c9f-0e38d754590c.png)
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REGR: Notebook (html) repr of DataFrame no longer follows min_rows/max_rows settings
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8
2020-10-23T11:16:39Z
2020-11-13T05:53:19Z
2020-11-13T05:45:48Z
MEMBER
null
- [ ] closes #37359 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Fix display logic in number of rows, explained here https://pandas.pydata.org/docs/dev/user_guide/options.html#frequently-used-options
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Backport PR #37302 on branch 1.1.x (BUG: Allow empty chunksize in stata reader when using iterator)
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2
2020-10-23T12:36:24Z
2020-10-24T16:11:09Z
2020-10-24T16:11:09Z
NONE
null
Backport PR #37302: BUG: Allow empty chunksize in stata reader when using iterator
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TYP: DatetimeIndex, TimedeltaIndex
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0
2020-10-23T16:08:47Z
2020-10-29T02:00:11Z
2020-10-29T00:57:47Z
MEMBER
null
Better alternative to parts of #37224
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37,366
Column lookups using str subclasses fail on DataFrames with DateTime indexes
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1
2020-10-23T18:31:15Z
2021-05-11T20:06:13Z
2021-05-11T20:06:12Z
NONE
null
Consider the following code: ```python x = pd.DataFrame({"a": [1]}, index=pd.DatetimeIndex(["2020-10-22 01:21:00+00:00"])) x["b"] = 2 class mystring(str): pass x[mystring("b")] # works x[mystring("c")] = 3 # error! ``` We are specifically interested in this because we've been trying to move towards using `enum.Enum` classes to remove column-name string constants from our code, which works well in many cases, but fails badly when there's a datetime index. Just as an example, we might do something like ```python import enum @enum.unique class ColNames(str, enum.Enum): NAME = "name" POWER_W = "power (watts)" ``` As far as I can tell, what's going on is: 1. When indexing, pandas (for reasons I'm not sure I understand) [first tries to interpret the key as a row slice](https://github.com/pandas-dev/pandas/blob/f0ecfd87b10d95eb1d328655da9cee1bb9118876/pandas/core/frame.py#L3069) 2. That function will [happily accept str subclasses](https://github.com/pandas-dev/pandas/blob/f0ecfd87b10d95eb1d328655da9cee1bb9118876/pandas/core/indexing.py#L2174) (and works as expected if the column already exists) 3. But with a DateTime index, it eventually [gets here](https://github.com/pandas-dev/pandas/blob/f0ecfd87b10d95eb1d328655da9cee1bb9118876/pandas/_libs/tslibs/parsing.pyx#L281) where apparently str subclasses are no longer accepted and a `TypeError` is raised. I see two easy solutions (i.e. that I could easily submit a PR for): 1. Convert the key to a normal string either [here](https://github.com/pandas-dev/pandas/blob/f0ecfd87b10d95eb1d328655da9cee1bb9118876/pandas/core/indexing.py#L2184) or in the subclass implementations thereof 2. Watch for `TypeError`s [here](https://github.com/pandas-dev/pandas/blob/f0ecfd87b10d95eb1d328655da9cee1bb9118876/pandas/core/indexing.py#L2193) in addition to the other known types there, allowing it to gracefully continue on and try the key as a column name (which will then succeed) I can also envision fixing this by 3. extending the low-level parsing function to work better with this case, or 4. finishing the [deprecation of row lookups](https://github.com/pandas-dev/pandas/blob/master/pandas/core/indexing.py#L2186) using regular `frame[indx]` notation However solution 3 is outside my comfort zone, and 4 seems like it might be more involved anyway. It feels to me like solution 3 is the "correct" resolution to this problem, and that 1 is almost as good (if applied in all the right places), but since it's not my project, I wanted to get feedback before trying to jump in to any of these.
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37,367
BUG/TST: Fix infer_dtype for Period array-likes and general ExtensionArrays
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32
2020-10-23T19:07:37Z
2021-02-12T17:47:22Z
2021-02-12T17:45:26Z
MEMBER
null
Closes #23553 In addition, I also changed to let infer_dtype fall back to inferring from the scalar elements if the array-like is not recognized directly (now it raises an error, which doesn't seem very useful?)
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37,368
TST: split up test_concat.py #37243 - follows up
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2
2020-10-23T19:31:48Z
2020-10-23T20:42:21Z
2020-10-23T20:41:13Z
CONTRIBUTOR
null
* created test_datetime.py and split datetime/timezone/period related tests - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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BUG: Call finalize in DataFrame.unstack
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2020-10-24T03:54:08Z
2020-10-24T03:09:22Z
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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 This commit adds a step to call `__finalize__` in `DataFrame.unstack`, as motivated by #28283. Adding this step also prevents needing a step to call `__finalize__` in `DataFrame.pivot` since `DataFrame.unstack` is called before returning, so the xfail for that test was removed as well.
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2020-10-23T20:59:52Z
2020-11-05T20:55:07Z
2020-10-25T18:43:01Z
CONTRIBUTOR
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DOC: add searchsorted examples #36411
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2020-10-23T21:11:34Z
2020-10-26T22:45:48Z
2020-10-26T17:37:54Z
CONTRIBUTOR
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Currently, if the input array to `ensure_string_array` is a python object (e.g. an `ExtensionArray`), the function will constantly switch between python and cython level code, which is slow. This PR fixes that by ensuring we always have a numpy array, avoiding the trips to python level code. ``` python >>> n = 50_000 >>> cat = pd.Categorical([*['a', pd.NA] * n]) >>> %timeit cat.astype("string") 447 ms ± 11.9 ms per loop # master 5.43 ms ± 80.5 µs per loop # this PR ``` xref #35519, #36464.
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- [x] closes #36758 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry xref #30228
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- [x] closes #34751 - [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:Pandas groupby agg example for k-hot encoding
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#### Location of the documentation https://pandas.pydata.org/pandas-docs/version/0.22.0/generated/pandas.DataFrame.aggregate.html#pandas.DataFrame.aggregate [this should provide the location of the documentation, e.g. "pandas.read_csv" or the URL of the documentation, e.g. "https://dev.pandas.io/docs/reference/api/pandas.read_csv.html"] **Note**: You can check the latest versions of the docs on `master` [here](https://pandas.pydata.org/docs/dev/). #### Documentation problem It is strange that even on stackoverflow reverse explode has only a single answer(that too is asked very recently). So adding a few more examples should not be bad. ![image](https://user-images.githubusercontent.com/40588378/97079156-51586480-160f-11eb-8545-2efa6c384784.png) [this should provide a description of what documentation you believe needs to be fixed/improved] #### Suggested fix for documentation The following example tells how to perform k-hot encoding with agg. ![image](https://user-images.githubusercontent.com/40588378/97079098-ddb65780-160e-11eb-9db3-0577a034352e.png) ``` maximum = df.groupby("ImageId").agg({"ClassId":lambda x:x.tolist()})["ClassId"].max()[0] df = df.groupby("ImageId").agg({"ClassId":lambda x:x.tolist()}) df["ClassId"] = df["ClassId"].apply(lambda x:[1 if i+1 in x else 0 for i in range(maximum)] ) ``` ![image](https://user-images.githubusercontent.com/40588378/97079113-09394200-160f-11eb-90ad-5b1c38d86859.png) [this should explain the suggested fix and **why** it's better than the existing documentation]
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CI move validate unwanted patterns over to pre-commit
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1
2020-10-24T11:29:40Z
2020-10-26T12:51:10Z
2020-10-26T12:07:18Z
MEMBER
null
This becomes much simpler with pre-commit :smile: As with other PRs of this kind, the motivation for moving checks like these over to pre-commit is that they become cross-platform and that they provide faster feedback to devs ---- example: if I apply ```diff diff --git a/pandas/io/formats/info.py b/pandas/io/formats/info.py index 891b3ea7a..6c1075910 100644 --- a/pandas/io/formats/info.py +++ b/pandas/io/formats/info.py @@ -479,7 +479,7 @@ class DataFrameTableBuilder(TableBuilderAbstract): collected_dtypes = [ f"{key}({val:d})" for key, val in sorted(self.dtype_counts.items()) ] - self._lines.append(f"dtypes: {', '.join(collected_dtypes)}") + self._lines.append(" " f"dtypes: {', '.join(collected_dtypes)}") def add_memory_usage_line(self) -> None: """Add line containing memory usage.""" ``` then I get ```console $ pre-commit run unwanted-patterns-strings-to-concatenate --all Check for use of not concatenated strings................................Failed - hook id: unwanted-patterns-strings-to-concatenate - exit code: 1 pandas/io/formats/info.py:482:String unnecessarily split in two by black. Please merge them manually. ```
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TST: Update unreliable num precision component of test_binary_arith_ops (GH37328)
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12
2020-10-24T14:11:12Z
2020-10-28T12:05:00Z
2020-10-28T12:04:57Z
CONTRIBUTOR
null
- [x] closes #37328 - [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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7
2020-10-24T15:25:35Z
2021-06-06T19:22:15Z
2020-11-04T16:52:45Z
CONTRIBUTOR
null
In reference to #28283 Added finalize reference to append, merge, eval, diff, applymap, and update. Removed the ignore marks from the associated tests.
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4
2020-10-24T15:58:59Z
2020-10-26T09:40:48Z
2020-10-25T21:56:55Z
MEMBER
null
not sure if anyone else if having issue running tests locally. have created a clean pandas-dev env on a different machine so maybe a transient thing. https://github.com/pytest-dev/pytest-xdist/issues/432 <details> ``` INSTALLED VERSIONS ------------------ commit : dce547ea2fe7f8c5c51c04d0a87704a2b4abf476 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 142 Stepping 12, GenuineIntel byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : English_United Kingdom.1252 pandas : 1.2.0.dev0+908.gdce547ea2f 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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2020-10-24T16:05:58Z
2020-10-24T17:23:12Z
2020-10-24T17:21:59Z
MEMBER
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37,384
replace Appender decorator with doc
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2020-10-24T17:15:24Z
2020-11-11T01:26:46Z
2020-11-11T01:26:37Z
CONTRIBUTOR
null
- [x] ref #31942 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] replaces Appender with doc for NDFrame.compare()
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37,385
BUG: pandas 1.1.3 fails to install using pip and clang due to unreachable code
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2020-10-24T17:17:16Z
2020-10-24T17:18:34Z
2020-10-24T17:18:34Z
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 ```python pip3 install -U --user pandas ``` #### Problem description The installation fails with the following output:- ``` clang -pthread -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DNPY_NO_DEPRECATED_API=0 -I./pandas/_libs -Ipandas/_libs/src/klib -I/tmp/ pip-build-env-ikhpgen8/overlay/lib/python3.9/site-packages/numpy/core/include -I/home/chaz/.local/local/python-3.9.0/include/python3.9 -c pandas/_libs/algos.c -o build/temp.linux-x 86_64-3.9/pandas/_libs/algos.o -Werror pandas/_libs/algos.c:81785:3: error: code will never be executed [-Werror,-Wunreachable-code] __Pyx_SafeReleaseBuffer(&__pyx_pybuffernd_arr.rcbuffer->pybuffer); ^~~~~~~~~~~~~~~~~~~~~~~ pandas/_libs/algos.c:83402:3: error: code will never be executed [-Werror,-Wunreachable-code] __Pyx_SafeReleaseBuffer(&__pyx_pybuffernd_arr.rcbuffer->pybuffer); ^~~~~~~~~~~~~~~~~~~~~~~ pandas/_libs/algos.c:84302:3: error: code will never be executed [-Werror,-Wunreachable-code] __Pyx_SafeReleaseBuffer(&__pyx_pybuffernd_arr.rcbuffer->pybuffer); ^~~~~~~~~~~~~~~~~~~~~~~ pandas/_libs/algos.c:85202:3: error: code will never be executed [-Werror,-Wunreachable-code] __Pyx_SafeReleaseBuffer(&__pyx_pybuffernd_arr.rcbuffer->pybuffer); ^~~~~~~~~~~~~~~~~~~~~~~ pandas/_libs/algos.c:85385:3: error: code will never be executed [-Werror,-Wunreachable-code] __Pyx_SafeReleaseBuffer(&__pyx_pybuffernd_arr.rcbuffer->pybuffer); ^~~~~~~~~~~~~~~~~~~~~~~ pandas/_libs/algos.c:86285:3: error: code will never be executed [-Werror,-Wunreachable-code] __Pyx_SafeReleaseBuffer(&__pyx_pybuffernd_arr.rcbuffer->pybuffer); ^~~~~~~~~~~~~~~~~~~~~~~ 6 errors generated. error: command '/home/chaz/.local/local/clang+llvm/bin/clang' failed with exit code 1 ---------------------------------------- ERROR: Failed building wheel for pandas ``` #### Expected Output The module should be installed successfully. #### Output of ``pd.show_versions()`` N/A [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] </details>
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37,386
DOC: Improve clarity and fix grammar
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1
2020-10-24T17:38:39Z
2020-10-26T14:38:14Z
2020-10-25T18:38:23Z
CONTRIBUTOR
null
- [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry This PR improves the "Performance considerations" section of the IO tools user guide: https://pandas.pydata.org/pandas-docs/stable/user_guide/io.html#performance-considerations
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37,387
TST: split up test_concat.py #37243 - more follows up
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9
2020-10-24T18:27:03Z
2020-10-28T12:31:53Z
2020-10-28T12:04:17Z
CONTRIBUTOR
null
* created test_categorical.py - [x] closes #37243 - [ ] tests added / passed - [x] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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PERF: release gil for ewmc_time
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2020-10-24T18:30:14Z
2020-10-24T18:32:01Z
2020-10-24T18:31:52Z
MEMBER
null
no perf change for `rolling.EWMMethods`
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PERF: release gil for ewma_time
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4
2020-10-24T18:50:04Z
2020-11-04T02:57:07Z
2020-11-04T02:57:03Z
MEMBER
null
The performance changes for `rolling.EWMMethods` are not stable. I've seen those and no changes in separate runs. ``` + 1.35±0.02ms 2.17±0.5ms 1.61 rolling.EWMMethods.time_ewm('Series', 1000, 'float', 'std') ``` ``` - 2.58±0.2ms 1.36±0.01ms 0.53 rolling.EWMMethods.time_ewm('Series', 10, 'float', 'std') ``` ``` + 1.39±0.01ms 2.17±0.5ms 1.56 rolling.EWMMethods.time_ewm('DataFrame', 10, 'float', 'std') - 1.71±0.3ms 1.35±0.01ms 0.79 rolling.EWMMethods.time_ewm('Series', 10, 'float', 'std') ```
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CLN: Deprecate dayofweek/hello day_of_week (#9606)
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7
2020-10-24T22:39:20Z
2020-10-29T01:19:03Z
2020-10-29T01:18:57Z
CONTRIBUTOR
null
Rename dayofweek properties in Period, Datetime, and PeriodArray classes. Add day_of_week property to respective tests for each class. - [x] closes #9606 - [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: nanstd with td64 and skipna=False
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2020-10-24T23:53:22Z
2020-10-24T23:55:40Z
2020-10-24T23:54:24Z
MEMBER
null
- [ ] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry The actual bugfix is the one line changed in nanops; the test is rolled in to the existing TDA.std test. Everything else is cleanup that was involved in tracking down the bug.
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BUG: DataFrame.std(skipna=False) with td64 dtype
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1
2020-10-25T00:36:44Z
2020-10-26T03:33:43Z
2020-10-26T03:14:07Z
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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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DOC: make RST files conform to pandas token usage
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2020-10-25T02:19:23Z
2020-12-29T17:17:34Z
2020-12-29T17:17:34Z
CONTRIBUTOR
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See also: #32316 - [x] closes #32316 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry In #36845 the RST files were updated to normalize usage of the word "pandas". The following tokens were replaced: + \`pandas\` + \`\`pandas\`\` + \*pandas\* + \*\*pandas\*\* + Pandas In that PR, I wrongly said that I caught all patterns. I was wrong, and this PR address that (my apologies). #### Misc Note I'm also working on a rule for `code_checks.sh` to catch this in the future. I have the logic of the rule, but I'm struggling to get it to output nicely in such a way that it conforms with the rest of the rules in `code_checks.sh`. I want to leave this information here in case someone has any ideas I can bounce of off, or in case anyone else wants to try their hand at this. I could be spinning my wheels there for awhile and don't want it to hold up getting these changes in. I used the following rule to find the remaining cases: ```shell MSG='Check doc/source RST files which format pandas incorrectly'; echo $MSG invgrep -R --include=*.rst -Poz '((\*|`)+)pandas\2|((((\.\. code-block:: ipython\s+)(\s +[^\n]*)+)|.\.\ [^\n]+https?[^\n]+|(`+).*\s+<https?[^\n]+>\8(__)?|`.*`_+\s+~+|.*:ref:`.*`)(*SKIP)(?!)|\bPandas\b(?!-))' doc/source/ | sed 's/\x0/\n/g' RET=$(($RET + $?)) ; echo $MSG "DONE" ``` This finds easily identifiable formatting errors (\`\`pandas\`\`, for example), but it also respects article titles and code examples in an RST `code-block`s. It uses `grep -v` to get all text on a single line, but that causes error messages to lose the line number of the file that the error occurred on (everything in file `foo.rst` is reported to have happened on line 1). Because of this I'm not including the regex in this PR. If anyone is interested in giving me pointers on getting that bit fixed, or even taking my idea and running with it themselves, please do so. Edit: Because its desired to retain \`\`pandas\`\` in some places where it contextually make sense, regex won't be able to capture such uses. The above regex can instead be: ```shell MSG='Check doc/source RST files which format pandas incorrectly'; echo $MSG invgrep -R --include=*.rst -Poz '(\*+|`)pandas\1|((((\.\. code-block:: ipython\s+)(\s +[^\n]*)+)|.\.\ [^\n]+https?[^\n]+|(`+).*\s+<https?[^\n]+>\7(__)?|`.*`_+\s+~+|.*:ref:`.*`)(*SKIP)(?!)|\bPandas\b(?!-))' doc/source/ | sed 's/\x0/\n/g' RET=$(($RET + $?)) ; echo $MSG "DONE" ``` which will ignore \`\`pandas\`\` but catch \`pandas\`
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- [x] closes #37151 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Will handle min_count on the next pass.
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2020-10-25T03:19:21Z
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This sits on top of #37394. The cleanup in _maybe_get_mask means that we end up getting a correctly-dtyped result instead of object-dtype, which becomes important in the upcoming nanmean PR.
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2020-10-25T08:44:41Z
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[![Tag Release](https://github.com/simonjayhawkins/pandas-release/workflows/Tag%20Release/badge.svg)](https://github.com/simonjayhawkins/pandas-release/actions?query=workflow%3A%22Tag+Release%22) Tracking issue for the 1.1.4 release. Scheduled for release October 30, 2020 https://github.com/pandas-dev/pandas/milestone/78 Please do not remove/change milestones from these issues without a note explaining the reasoning (changing milestones doesn't trigger notification) During issue triage, regressions from 1.0.5 onwards should be milestoned 1.1.4 in the first instance. cc @pandas-dev/pandas-triage
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test_rolling_var_numerical_issues on linux py_3.8_32 failing on MacPython.pandas-wheels
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2020-10-25T09:37:06Z
2021-08-13T05:20:55Z
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MEMBER
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https://dev.azure.com/pandas-dev/pandas-wheels/_build/results?buildId=45987&view=logs&j=bb1c2637-64c6-57bd-9ea6-93823b2df951&t=9c62e7ff-391e-517d-ede1-af63bc6a25da test_rolling_var_numerical_issues added in #37055 cc @phofl
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CI: enable 32bit build on CI
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2020-10-25T09:50:24Z
2020-10-25T20:08:49Z
2020-10-25T20:08:26Z
MEMBER
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the number of failures on the 32bit build on https://github.com/MacPython/pandas-wheels is starting to accumulate we should consider having a 32bit build on CI to catch these earlier (and can be addressed by the people more familiar with the changes) a snapshot of the failures on linux py_3.8_32 ``` =========================== short test summary info ============================ FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/arrays/floating/test_function.py::test_stat_method[var-kwargs1] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/arrays/floating/test_function.py::test_stat_method[var-kwargs0] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/arrays/floating/test_function.py::test_stat_method[kurtosis-kwargs2] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/arrays/floating/test_function.py::test_stat_method[sem-kwargs4] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/base/test_misc.py::test_memory_usage[series-with-empty-index] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/groupby/test_groupby.py::test_groupby_nat_exclude FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/io/formats/test_info.py::test_info_int_columns FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/io/parser/test_c_parser_only.py::test_float_precision_options[c_high] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/io/parser/test_c_parser_only.py::test_float_precision_options[c_low] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/reshape/test_pivot.py::TestPivot::test_pivot_empty FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/window/test_rolling.py::test_rolling_var_numerical_issues[var-1-values0] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/window/test_rolling.py::test_rolling_var_numerical_issues[std-1-values1] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/window/test_rolling.py::test_rolling_var_numerical_issues[var-2-values2] FAILED ../../venv/lib/python3.8/site-packages/pandas/tests/window/test_rolling.py::test_rolling_var_numerical_issues[std-2-values3] = 14 failed, 80215 passed, 16918 skipped, 1380 xfailed, 13 warnings in 528.07s (0:08:48) = ``` #37398, #36662 and #36429 address some of these.
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1
2020-10-25T11:30:35Z
2020-10-26T08:03:30Z
2020-10-26T03:06:07Z
CONTRIBUTOR
null
Fixes https://github.com/pandas-dev/pandas/pull/37321#issuecomment-715878012 The offender is actually #37321. Apparantly is's a bit slow to do the check using a generator like `com.any_none`. ```python In [1]: from pandas import * In [2]: idx_large_fast = RangeIndex(100000) ...: idx_small_slow = date_range(start="1/1/2012", periods=1) ...: mi_large_slow = MultiIndex.from_product([idx_large_fast, idx_small_slow]) ...: ...: idx_non_object = RangeIndex(1) In[3]: %timeit mi_large_slow.equals(idx_non_object) 3.13 µs ± 79.4 ns per loop # master 2.09 µs ± 31.1 ns per loop # This PR ```
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CI/CLN: Lint more class references in tests
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2020-10-25T16:02:28Z
2020-10-29T02:01:57Z
2020-10-29T00:58:49Z
MEMBER
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- [x] closes #23930 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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2020-10-25T19:38:48Z
2020-10-25T19:54:02Z
2020-10-25T19:45:50Z
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- [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Introduced with #37090
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2020-10-25T21:13:07Z
2021-02-12T22:48:25Z
2021-02-12T22:48:25Z
MEMBER
null
- [x] xref #32306 (and a few others, will add them later - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry cc @WillAyd I started with raising a FutureWarning when merging nan on nan. This works, if ``left_index`` and ``right_index`` are not both True. If both are True, we are dispatching to the Index methods. Should we deprecate this for indexes too? Additionally, should we remove this for ``intersection`` of index in the future too? Will continue after receiving feedback :)
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2020-10-25T22:18:48Z
2020-11-21T23:50:46Z
2020-11-21T22:23:28Z
MEMBER
null
- [x] closes #35382 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Passed sort through for right join too. Did not see a reason why not. On a related note: I think outer joins return a inconsistent order too. ``` df = pd.DataFrame({'a': [1, 0, 1]}) print(df.merge(df, on='a', how='outer', sort=False)) a 0 1 1 1 2 1 3 1 4 0 ``` instead of ``` a 0 1 1 1 2 0 3 1 4 1 ``` like ``left`` and ``right`` now. Would have to add a ``sort`` keyword to outer join. Should I open an issue for that?
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3
2020-10-25T22:51:15Z
2020-10-27T15:45:14Z
2020-10-26T03:18:19Z
CONTRIBUTOR
null
- [X] closes #28266 - [X] tests added / passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Hi guys, just added tests for issue #28266. I'm participating in the Hacktoberfest event and would much appreciate it if someone put the label ‘hacktoberfest-accepted’ on this PR. Any modification needed just hit me up :)
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2020-10-25T23:59:09Z
2020-10-26T07:23:47Z
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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 pd.DataFrame({1: [0]}).info() ``` #### Problem description Stack trace: ``` --------------------------------------------------------------------------- KeyError Traceback (most recent call last) ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance) 2894 try: -> 2895 return self._engine.get_loc(casted_key) 2896 except KeyError as err: pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc() pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc() pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.Int64HashTable.get_item() pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.Int64HashTable.get_item() KeyError: 0 The above exception was the direct cause of the following exception: KeyError Traceback (most recent call last) <ipython-input-21-b154f24c816b> in <module> ----> 1 pd.DataFrame({1: [0]}).info() ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/core/frame.py in info(self, verbose, buf, max_cols, memory_usage, null_counts) 2588 ) -> None: 2589 return DataFrameInfo( -> 2590 self, verbose, buf, max_cols, memory_usage, null_counts 2591 ).info() 2592 ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/io/formats/info.py in info(self) 248 self._non_verbose_repr(lines, ids) 249 else: --> 250 self._verbose_repr(lines, ids, dtypes, show_counts) 251 252 # groupby dtype.name to collect e.g. Categorical columns ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/io/formats/info.py in _verbose_repr(self, lines, ids, dtypes, show_counts) 333 334 for i, col in enumerate(ids): --> 335 dtype = dtypes[i] 336 col = pprint_thing(col) 337 ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/core/series.py in __getitem__(self, key) 880 881 elif key_is_scalar: --> 882 return self._get_value(key) 883 884 if is_hashable(key): ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/core/series.py in _get_value(self, label, takeable) 987 988 # Similar to Index.get_value, but we do not fall back to positional --> 989 loc = self.index.get_loc(label) 990 return self.index._get_values_for_loc(self, loc, label) 991 ~/.pyenv/versions/3.7.7/envs/ga/lib/python3.7/site-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance) 2895 return self._engine.get_loc(casted_key) 2896 except KeyError as err: -> 2897 raise KeyError(key) from err 2898 2899 if tolerance is not None: KeyError: 0 ``` It seems that this error arises when calling `.info()` on any DataFrame that has at least one integer column name unless the sorted column names form a sequence of consecutive integers starting at 0. #### Expected Output ``` <class 'pandas.core.frame.DataFrame'> RangeIndex: 1 entries, 0 to 0 Data columns (total 1 columns): 1 1 non-null int64 dtypes: int64(1) memory usage: 136.0 bytes ``` #### Output of ``pd.show_versions()`` ``` INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.7.7.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 : 1.18.2 pytz : 2019.3 dateutil : 2.8.1 pip : 20.1 setuptools : 41.2.0 Cython : None pytest : 5.4.1 hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.1 IPython : 7.13.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.2.1 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : 0.48.0 ``` </details>
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1
2020-10-26T04:02:40Z
2020-10-26T13:47:42Z
2020-10-26T13:47:37Z
CONTRIBUTOR
null
small clean ups - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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37,413
List indexing works for .tail() but not .head()
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5
2020-10-26T08:14:27Z
2020-10-26T16:29:40Z
2020-10-26T16:29:24Z
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 ```python df.close.head(1)[0] df.close.tail(1)[0] ``` df.close.head(1)[0] <-- Works just fine df.close.tail(1)[0] <-- Returns KeyError: 0 Current fix: list(df.close.tail(1))[0] [df.close.tail(1)][0] does not work. [this should explain **why** the current behaviour is a problem and why the expected output is a better solution] #### Expected Output The last number by itself without its index. The current output just returns an error, so, it would be great to have it more consistent with the return of its .head() counterpart. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Windows OS-release : 10 machine : AMD64 processor : Intel64 Family 6 Model 158 Stepping 13, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : None.None pandas : 1.0.5 numpy : 1.19.2 pytz : 2020.1 dateutil : 2.8.1 pip : 20.1.1 setuptools : 47.3.1.post20200622 Cython : 0.29.17 pytest : 5.4.3 hypothesis : 5.18.3 sphinx : 3.1.1 blosc : None feather : None xlsxwriter : 1.2.9 lxml.etree : 4.5.1 html5lib : 1.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.16.1 pandas_datareader: None bs4 : 4.9.1 bottleneck : 1.3.2 fastparquet : None gcsfs : None lxml.etree : 4.5.1 matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : 0.15.1 pytables : None pytest : 5.4.3 pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.18 tables : 3.6.1 tabulate : 0.8.7 xarray : 0.15.1 xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.9 numba : 0.49.1 </details>
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729,436,898
MDU6SXNzdWU3Mjk0MzY4OTg=
37,414
BUG: UnicodeDecodeError: 'unicodeescape' codec can't decode byte 0x5c at end of string
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2020-10-26T10:21:25Z
2021-10-14T10:11:29Z
2021-10-14T10:11:29Z
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. Checked 8da70fc36705e9dcf0de28227f4ad4c914d84f78 --- **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 import numpy as np row_size = 2*10**5 test_csv_name = "test_df.csv" dates = pandas.date_range("2000", freq="s", periods=row_size) df = pandas.DataFrame( { "col1": np.arange(row_size), "col2": [str(x.date()) for x in dates], "col3": np.arange(row_size), "col4": [str(x.time()) for x in dates], } ) df.to_csv(test_csv_name, sep=",", encoding="unicode_escape") pandas_df = pandas.read_csv(test_csv_name, encoding="unicode_escape") print(pandas_df) ``` #### Problem description This reproducer works well with `row_size = 2*10**4` so I expect similar behaviour for `row_size = 2*10**5`. <details> <summary> Traceback for case when row_size = 2*10**5</summary> ```sh File "reproducer.py", line 18, in <module> pandas_df = pandas.read_csv(test_csv_name, encoding="unicode_escape") File "...\pandas\io\parsers.py", line 686, in read_csv return _read(filepath_or_buffer, kwds) File "...\pandas\io\parsers.py", line 458, in _read data = parser.read(nrows) File "...\pandas\io\parsers.py", line 1196, in read ret = self._engine.read(nrows) File "...\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 2034, in pandas._libs.parsers.raise_parser_error UnicodeDecodeError: 'unicodeescape' codec can't decode byte 0x5c in position 8191: \ at end of string ``` </details> #### Expected Output Expected output can be computed using workaround: ```python # workaround from io import StringIO with open(test_csv_name, mode="rb") as f: pandas_df = pandas.read_csv(StringIO(f.read().decode("unicode_escape"))) ``` ```python # expected output Unnamed: 0 col1 col2 col3 col4 0 0 0 2000-01-01 0 00:00:00 1 1 1 2000-01-01 1 00:00:01 2 2 2 2000-01-01 2 00:00:02 3 3 3 2000-01-01 3 00:00:03 4 4 4 2000-01-01 4 00:00:04 ... ... ... ... ... ... 199995 199995 199995 2000-01-03 199995 07:33:15 199996 199996 199996 2000-01-03 199996 07:33:16 199997 199997 199997 2000-01-03 199997 07:33:17 199998 199998 199998 2000-01-03 199998 07:33:18 199999 199999 199999 2000-01-03 199999 07:33:19 [200000 rows x 5 columns] ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.7.8.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.18362 machine : AMD64 processor : Intel64 Family 6 Model 142 Stepping 10, GenuineIntel byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : None.None 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 : None pytest : 6.1.1 hypothesis : None sphinx : None blosc : None feather : 0.4.1 xlsxwriter : None lxml.etree : 4.6.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.18.1 pandas_datareader: None bs4 : 4.9.3 bottleneck : None fsspec : 0.8.4 fastparquet : None gcsfs : None matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.5 pandas_gbq : 0.14.0 pyarrow : 0.16.0 pytables : None pyxlsb : None s3fs : 0.4.2 scipy : 1.5.2 sqlalchemy : 1.3.20 tables : 3.6.1 tabulate : None xarray : 0.16.1 xlrd : 1.2.0 xlwt : None numba : None </details>
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37,415
BUG: groupby with std aggregation of pandas integer dtype throws exception: 'IntegerArray' object has no attribute 'reshape'
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5
2020-10-26T11:11:43Z
2020-10-27T12:38:14Z
2020-10-27T12:38:14Z
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 import pandas as pd df = pd.DataFrame({'a': [1,1,1,2,2],'b': [1,2,3,4,5]}) df['b'] = df['b'].astype(pd.Int32Dtype()) df.groupby('a').agg('std') # Error 'IntegerArray' object has no attribute 'reshape'. The same error occurs with all pandas integer types ``` #### Problem description For all integer pandas dtypes the code expects an IntegerArray to have the reshape function as is the case with numpy arrays. It is possible that the error will also occur with other operations performed after a groupby, this has only been checked for 'std'. The error occurs at pandas\core\groupby\groupby.py", line 2491, in _get_cythonized_result vals = vals.reshape((-1, 1)) #### Expected Output The same output as with a numpy data type, for example above this would be: a b 1 1.000000 2 0.707107 #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : db08276bc116c438d3fdee492026f8223584c477 python : 3.6.9.final.0 python-bits : 64 OS : Linux OS-release : 4.19.112+ Version : #1 SMP Thu Jul 23 08:00:38 PDT 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 : 1.18.5 pytz : 2018.9 dateutil : 2.8.1 pip : 19.3.1 setuptools : 50.3.0 Cython : 0.29.21 pytest : 3.6.4 hypothesis : None sphinx : 1.8.5 blosc : None feather : 0.4.1 xlsxwriter : None lxml.etree : 4.2.6 html5lib : 1.0.1 pymysql : None psycopg2 : 2.7.6.1 (dt dec pq3 ext lo64) jinja2 : 2.11.2 IPython : 5.5.0 pandas_datareader: 0.9.0 bs4 : 4.6.3 bottleneck : 1.3.2 fsspec : None fastparquet : None gcsfs : None matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : 2.5.9 pandas_gbq : 0.13.2 pyarrow : 0.14.1 pytables : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.19 tables : 3.4.4 tabulate : 0.8.7 xarray : 0.15.1 xlrd : 1.1.0 xlwt : 1.3.0 numba : 0.48.0 </details>
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37,416
Backport PR #35792 on branch 1.1.x: CLN/BUG: Clean/Simplify _wrap_applied_output
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2020-10-26T12:00:57Z
2020-10-26T15:41:32Z
2020-10-26T15:41:26Z
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Backport PR #35792 https://github.com/pandas-dev/pandas/pull/37305#issuecomment-716498455 cc @jreback
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DOC: move release note for 35792
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2020-10-26T13:26:39Z
2020-10-26T15:24:31Z
2020-10-26T15:05:40Z
MEMBER
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follow-on from #37416
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Backport PR #37023 on branch 1.1.x (REGR: fix bug in DatetimeIndex slicing with irregular or unsorted indices)
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2020-10-26T14:52:40Z
2020-10-26T15:46:48Z
2020-10-26T15:46:48Z
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Backport PR #37023: REGR: fix bug in DatetimeIndex slicing with irregular or unsorted indices
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