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742,725,927
MDExOlB1bGxSZXF1ZXN0NTIwNzk5MDkw
37,819
Deprecate partial slicing of unordered DatetimeIndex when both keys are not present
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1
2020-11-13T19:13:00Z
2020-11-15T17:41:54Z
2020-11-15T17:39:05Z
MEMBER
null
- [x] xref #18531 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry cc @jreback @jorisvandenbossche This would deprecate #37796 before removing it.
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742,750,386
MDU6SXNzdWU3NDI3NTAzODY=
37,820
BUG: MultiIndex.drop does not raise if labels are partially found
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0
2020-11-13T19:59:51Z
2020-11-26T22:38:05Z
2020-11-26T22:38:05Z
MEMBER
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example ```python mi = MultiIndex.from_tuples([(1, 2), (2, 2), (3, 2)]) mi.drop([1, 4], level=0) # does not raise mi.drop(4, level=0) # raises ``` #### Problem description The docs say ``` Raises KeyError If not all of the labels are found in the selected axis ``` I think both statements should raise ``KeyError`` https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Index.drop.html #### Expected Output Both are raising ``KeyError: 'labels [4] not found in level'`` For regular Indexes this holds True ``` index = Index([1, 2]) index.drop([1, 3]) # Raises ``` #### Output of ``pd.show_versions()`` <details> master </details>
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742,760,389
MDU6SXNzdWU3NDI3NjAzODk=
37,821
BUG: Groupby.last accepts min_count but implementation raises
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0
2020-11-13T20:18:45Z
2020-11-26T15:36:26Z
2020-11-26T15:36:26Z
MEMBER
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example ```python df = DataFrame({"a": [1, 2, 3, 4, 5, 6]}) df.groupby(level=0).last(min_count=1) ``` #### Problem description This raises ``` Traceback (most recent call last): File "/home/developer/.config/JetBrains/PyCharm2020.2/scratches/scratch_4.py", line 97, in <module> print(df.groupby(level=0).last(min_count=1)) File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/groupby.py", line 1710, in last return self._agg_general( File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/groupby.py", line 1032, in _agg_general result = self._cython_agg_general( File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/generic.py", line 1018, in _cython_agg_general agg_mgr = self._cython_agg_blocks( File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/generic.py", line 1116, in _cython_agg_blocks new_mgr = data.apply(blk_func, ignore_failures=True) File "/home/developer/PycharmProjects/pandas/pandas/core/internals/managers.py", line 425, in apply applied = b.apply(f, **kwargs) File "/home/developer/PycharmProjects/pandas/pandas/core/internals/blocks.py", line 368, in apply result = func(self.values, **kwargs) File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/generic.py", line 1067, in blk_func result, _ = self.grouper.aggregate( File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/ops.py", line 594, in aggregate return self._cython_operation( File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/ops.py", line 547, in _cython_operation result = self._aggregate(result, counts, values, codes, func, min_count) File "/home/developer/PycharmProjects/pandas/pandas/core/groupby/ops.py", line 608, in _aggregate agg_func(result, counts, values, comp_ids, min_count) File "pandas/_libs/groupby.pyx", line 906, in pandas._libs.groupby.group_last AssertionError: 'min_count' only used in add and prod Process finished with exit code 1 ``` #### Expected Output I would expect, that this function does not accept ``min_count`` as input (similar to ``Resample.last``) and raises the same error as described in #37768 Additonally the docs need adjustments, because ``min_count`` is documented. This probably holds true for most of the functions mentioned in https://github.com/pandas-dev/pandas/issues/37768#issuecomment-727009192 too. #### Output of ``pd.show_versions()`` <details> master </details>
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37,822
CI: pin build to use pyarrow==1.0
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2
2020-11-13T20:51:04Z
2020-11-14T13:55:01Z
2020-11-14T02:22:23Z
MEMBER
null
closes #37306 @jorisvandenbossche picked build at random. we can discuss here what the preferences are? cc @jreback
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2020-11-13T21:31:54Z
2020-12-14T01:41:53Z
2020-12-14T01:41:44Z
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null
- [x] closes #35185 - [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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The scripts were not documented and don't seem to be used anywhere.
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2020-11-14T02:35:19Z
2021-07-09T13:58:43Z
2021-07-09T13:58:43Z
CONTRIBUTOR
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we now have 3.9 support via conda-forge: https://github.com/pandas-dev/pandas/pull/37039 we should periodically update the tested packages as they become available.
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2020-11-14T19:40:53Z
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- [x] closes #36076 - [x] closes #28949 - [x] closes #21020 - [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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2020-11-14T05:35:26Z
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CONTRIBUTOR
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- [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` De-duplicate file handling of PyArrows' parquet.
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2020-11-14T09:33:03Z
2020-11-14T10:30:29Z
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Backport PR #37801
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BUG: MultiIndex.drop does not raise if labels are partially found
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2020-11-27T01:02:10Z
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- [x] closes #37820 - [x] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry
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2
2020-11-14T11:48:41Z
2020-11-14T13:49:54Z
2020-11-14T13:49:54Z
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 pandas.read_excel("data.xlsx") ``` #### Problem description Running the above code raises the exception below: ``` --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-21-524fa4fa6612> in <module> 1 path_prefix: str = "data/raw/" ----> 2 df = pandas.read_excel(f"{path_prefix}data.xlsx") ..lib/python3.9/site-packages/pandas/util/_decorators.py in wrapper(*args, **kwargs) 294 ) 295 warnings.warn(msg, FutureWarning, stacklevel=stacklevel) --> 296 return func(*args, **kwargs) 297 298 return wrapper ..lib/python3.9/site-packages/pandas/io/excel/_base.py in read_excel(io, sheet_name, header, names, index_col, usecols, squeeze, dtype, engine, converters, true_values, false_values, skiprows, nrows, na_values, keep_default_na, na_filter, verbose, parse_dates, date_parser, thousands, comment, skipfooter, convert_float, mangle_dupe_cols) 302 303 if not isinstance(io, ExcelFile): --> 304 io = ExcelFile(io, engine=engine) 305 elif engine and engine != io.engine: 306 raise ValueError( ..lib/python3.9/site-packages/pandas/io/excel/_base.py in __init__(self, path_or_buffer, engine) 865 self._io = stringify_path(path_or_buffer) 866 --> 867 self._reader = self._engines[engine](self._io) 868 869 def __fspath__(self): ..lib/python3.9/site-packages/pandas/io/excel/_xlrd.py in __init__(self, filepath_or_buffer) 20 err_msg = "Install xlrd >= 1.0.0 for Excel support" 21 import_optional_dependency("xlrd", extra=err_msg) ---> 22 super().__init__(filepath_or_buffer) 23 24 @property ..lib/python3.9/site-packages/pandas/io/excel/_base.py in __init__(self, filepath_or_buffer) 351 self.book = self.load_workbook(filepath_or_buffer) 352 elif isinstance(filepath_or_buffer, str): --> 353 self.book = self.load_workbook(filepath_or_buffer) 354 elif isinstance(filepath_or_buffer, bytes): 355 self.book = self.load_workbook(BytesIO(filepath_or_buffer)) ..lib/python3.9/site-packages/pandas/io/excel/_xlrd.py in load_workbook(self, filepath_or_buffer) 35 return open_workbook(file_contents=data) 36 else: ---> 37 return open_workbook(filepath_or_buffer) 38 39 @property ..lib/python3.9/site-packages/xlrd/__init__.py in open_workbook(filename, logfile, verbosity, use_mmap, file_contents, encoding_override, formatting_info, on_demand, ragged_rows) 128 if 'xl/workbook.xml' in component_names: 129 from . import xlsx --> 130 bk = xlsx.open_workbook_2007_xml( 131 zf, 132 component_names, ..lib/python3.9/site-packages/xlrd/xlsx.py in open_workbook_2007_xml(zf, component_names, logfile, verbosity, use_mmap, formatting_info, on_demand, ragged_rows) 810 del zflo 811 zflo = zf.open(component_names['xl/workbook.xml']) --> 812 x12book.process_stream(zflo, 'Workbook') 813 del zflo 814 props_name = 'docprops/core.xml' ..lib/python3.9/site-packages/xlrd/xlsx.py in process_stream(self, stream, heading) 264 self.tree = ET.parse(stream) 265 getmethod = self.tag2meth.get --> 266 for elem in self.tree.iter() if Element_has_iter else self.tree.getiterator(): 267 if self.verbosity >= 3: 268 self.dump_elem(elem) AttributeError: 'ElementTree' object has no attribute 'getiterator' ``` #### Expected Output `pandas.DataFrame` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.9.0.final.0 python-bits : 64 OS : Darwin OS-release : 19.6.0 Version : Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT 2020; root:xnu-6153.141.2.2~1/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 : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 pip : 20.2.3 setuptools : 49.2.1 Cython : None pytest : 6.1.2 hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.19.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.3 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.5 pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.4 sqlalchemy : None tables : 3.6.1 tabulate : None xarray : None xlrd : 1.2.0 xlwt : None numba : None </details>
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743,000,803
MDExOlB1bGxSZXF1ZXN0NTIxMDA0NTA3
37,832
Return view for xs when droplevel=False with regular Index
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2
2020-11-14T13:07:24Z
2020-11-15T17:26:38Z
2020-11-15T17:26:35Z
MEMBER
null
- [x] xref #37776 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Is there a better way to test, if the object is a view? cc @jbrockmendel
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743,031,939
MDU6SXNzdWU3NDMwMzE5Mzk=
37,833
Performance regression in fillna
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6
2020-11-14T16:17:40Z
2020-11-19T02:07:37Z
2020-11-19T02:07:37Z
CONTRIBUTOR
null
https://pandas.pydata.org/speed/pandas/index.html#replace.FillNa.time_fillna?python=3.8&Cython=0.29.21&p-inplace=False&commits=2eb353063d6bc4f2ed22e9943d26465e284b8393-68f53cd9e556698fe786aefe90466f233eb55841 https://github.com/pandas-dev/pandas/compare/2eb353063d6bc4f2ed22e9943d26465e284b8393...68f53cd9e556698fe786aefe90466f233eb55841 - [ ] I have checked that this issue has not already been reported. - [ ] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. ---
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743,037,994
MDExOlB1bGxSZXF1ZXN0NTIxMDMxMTI2
37,834
BUG: Parse missing values using read_json with dtype=False to NaN instead of None (GH28501)
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14
2020-11-14T16:52:13Z
2020-11-20T14:49:39Z
2020-11-20T02:51:30Z
CONTRIBUTOR
null
- [x] closes #28501 - [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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37,835
COMPAT: should an empty string match a format (or just be NaT)
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2
2020-11-14T17:39:54Z
2020-11-19T18:58:21Z
2020-11-19T18:58:15Z
CONTRIBUTOR
null
- [x] closes #13044 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry (not applicable)
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37,836
Backport PR #37787 on branch 1.1.x (Fix regression for loc and __setitem__ when one-dimensional tuple was given for MultiIndex)
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2020-11-14T17:41:48Z
2020-11-14T19:49:07Z
2020-11-14T19:48:41Z
NONE
null
Backport PR #37787: Fix regression for loc and __setitem__ when one-dimensional tuple was given for MultiIndex
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743,048,677
MDExOlB1bGxSZXF1ZXN0NTIxMDM4NDY5
37,837
CLN: remove unnecessary close calls and add a few necessary ones
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2
2020-11-14T17:50:45Z
2020-11-15T17:29:32Z
2020-11-15T17:07:59Z
CONTRIBUTOR
null
- [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Follow up to #37639. Close file handles as early as possible. Remove `close` calls that are already within a try-except/finally block that closes the file handles. Add `close` call for `read_json` when we read the entire content in one go. Add close call in `read_csv` when reaching the end of the iterator. Put `to/read_excel` in a try-finally block to make sure that file handles are closed even in case of an exception.
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MDExOlB1bGxSZXF1ZXN0NTIxMDM4NzAw
37,838
Fix cases of inconsistent namespacing in tests
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2020-11-14T17:52:35Z
2020-11-14T19:42:33Z
2020-11-14T19:42:33Z
CONTRIBUTOR
null
Sometimes e.g. Series and pd.Series are used in the same test file. This fixes some of these cases, generally by using the explicitly imported class. - [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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743,055,063
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37,839
DOC: section in indexing user guide to show use of np.where
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2020-11-14T18:28:22Z
2020-11-18T19:14:12Z
2020-11-18T13:58:35Z
CONTRIBUTOR
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Add a section in the user guide to illustrate the use of `np.where` and `np.select` to enlarge a dataframe conditionally. The example is taken from SO, as mentioned in [this issue](https://github.com/MarcoGorelli/PyDataGlobal2020-sprint/issues/5#issuecomment-727241262).
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37,840
TST: Add test for setting item using python list (#19406)
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6
2020-11-14T18:29:33Z
2020-11-15T13:44:22Z
2020-11-15T09:12:13Z
CONTRIBUTOR
null
- [X] closes #19406 - [X] tests added / passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [NA] whatsnew entry
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CI: Skip test when no xlwt or openpyxl
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2020-11-14T18:42:45Z
2020-11-14T23:50:40Z
2020-11-14T23:50:39Z
CONTRIBUTOR
null
Ref: https://github.com/pandas-dev/pandas/pull/37818 Seeing error in CI: https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=47726&view=logs&j=acc1347f-8235-55b0-95c7-0e2189e61659&t=486f34f1-eda6-516a-fc5d-d8195128dacd Skip logic same as `test_to_excel` in this file cc @jreback
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Fix cases of inconsistent namespacing in tests
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1
2020-11-14T18:58:32Z
2020-11-15T09:09:07Z
2020-11-15T09:09:07Z
CONTRIBUTOR
null
Additional fixes for MarcoGorelli/PyDataGlobal2020-sprint#1. Continues the work of lpkirwin in #37838. - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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namespace consistency for test_dtype.py
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1
2020-11-14T19:01:18Z
2020-11-15T09:03:51Z
2020-11-15T09:03:51Z
CONTRIBUTOR
null
- [x ] references #37838 - [x] tests added / passed - [x] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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DOC: add examples to docstrings of assert_ functions
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1
2020-11-14T19:05:17Z
2020-11-16T20:39:36Z
2020-11-16T20:39:16Z
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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37,845
DOC: SS01 docstrings errors fixed
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5
2020-11-14T19:16:28Z
2020-11-15T20:55:14Z
2020-11-15T09:02:54Z
CONTRIBUTOR
null
xref #27977 - [ ] closes part of [MarcoGorelli/PyDataGlobal2020-sprint#4](https://github.com/MarcoGorelli/PyDataGlobal2020-sprint/issues/4) - [ ] tests added / passed - [X] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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37,846
Added docs to fix GL08 errors in CustomBusinessHours
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3
2020-11-14T19:18:58Z
2020-11-17T01:32:36Z
2020-11-17T01:32:30Z
CONTRIBUTOR
null
- [ ] xref #27977 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Currently even after adding the docstrings the command `python scripts/validate_docstrings.py --errors=GL08` does not pick up the changes.
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DOC: add unqiue value counts example to groupyby guide
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5
2020-11-14T19:28:09Z
2020-11-25T13:30:39Z
2020-11-25T13:30:36Z
CONTRIBUTOR
null
Co-authored-by: Abdulelah Almesfer <28743265+abdulelahsm@users.noreply.github.com> Co-authoerd-by: Abdulellah Alnumay <33042538+Abo7atm@users.noreply.github.com> - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Adding an example to the groupby user guide. The example showcases the usage of ```nunique``` aggregate function. This is from the PyData Global sprint, from [this issue](https://github.com/MarcoGorelli/PyDataGlobal2020-sprint/issues/5). The example is taken from [StackOverflow](https://stackoverflow.com/questions/15411158/pandas-countdistinct-equivalent).
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Updated script to check inconsistent pandas namespace
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10
2020-11-14T19:43:11Z
2020-11-18T19:04:43Z
2020-11-18T19:04:37Z
CONTRIBUTOR
null
- [ ] closes #37838 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Updates the script for inconsistent namespace usage. To be merged after all the errors are fixed with the updated script. The script is described here : https://github.com/MarcoGorelli/PyDataGlobal2020-sprint/issues/1 by @MarcoGorelli
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Backport PR #37787 on branch 1.1.x (Fix regression for loc and __setitem__ when one-dimensional tuple was given for MultiIndex)
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2020-11-14T19:48:25Z
2020-11-15T11:16:31Z
2020-11-15T10:31:49Z
MEMBER
null
Backport #37787 ``frame_or_series`` not know here. cc @simonjayhawkins
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37,850
BUG: any and all are much slower than min and max for GroupBy.transform
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2020-11-14T19:53:14Z
2021-08-14T05:11:14Z
null
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 import numpy as np import pandas as pd pd.__version__ N=10**6 z=pd.DataFrame({'a': np.random.randint(1, 10, N), 'b': np.random.randint(1, 100000, N)}) z['c'] = (z.b % 2).astype(bool) %timeit z.groupby('a').c.transform(max) %timeit z.groupby('a').c.transform(min) %timeit z.groupby('a').c.transform(any) %timeit z.groupby('a').c.transform(all) ``` #### Problem description Logically any or all on bools should be faster or as fast as max or min which give exactly the same results. ``` In [7]: %timeit z.groupby('a').c.transform(max) 11.8 ms ± 86.5 µs per loop (mean ± std. dev. of 7 runs, 100 loops each) In [8]: %timeit z.groupby('a').c.transform(min) 11.8 ms ± 78.9 µs per loop (mean ± std. dev. of 7 runs, 100 loops each) In [9]: %timeit z.groupby('a').c.transform(any) 99.7 ms ± 383 µs per loop (mean ± std. dev. of 7 runs, 10 loops each) In [10]: %timeit z.groupby('a').c.transform(all) 99.8 ms ± 665 µs per loop (mean ± std. dev. of 7 runs, 10 loops each) ``` #### Expected Output Times for any and all are lower or same as for max and min #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.8.6.final.0 python-bits : 64 OS : Linux OS-release : 5.8.18-200.fc32.x86_64 Version : #1 SMP Mon Nov 2 19:49:11 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 pip : 19.3.1 setuptools : 41.6.0 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.4.1 html5lib : 1.0.1 pymysql : 0.9.3 psycopg2 : None jinja2 : 2.11.2 IPython : 7.12.0 pandas_datareader: None bs4 : 4.9.3 bottleneck : 1.2.1 fsspec : None fastparquet : None gcsfs : None matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : None pandas_gbq : None pyarrow : 2.0.0 pytables : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : None tables : 3.5.2 tabulate : 0.8.7 xarray : None xlrd : 1.2.0 xlwt : 1.1.2 numba : None </details>
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CLN: remove no-longer-used ignore_failures in frame_apply
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2020-11-14T19:54:49Z
2020-11-15T18:14:33Z
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making namespace usage more consistent
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2020-11-14T19:56:38Z
2020-11-16T10:00:16Z
2020-11-16T04:48:03Z
CONTRIBUTOR
null
- [x] closes #37838 - [x] tests added / passed - [x] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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CLN: indexing plane_indexer -> pi
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0
2020-11-14T21:30:51Z
2020-11-15T18:15:00Z
2020-11-15T17:21:52Z
MEMBER
null
We know plane_indexer is a 1-tuple, can simplify a bit.
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743,085,221
MDExOlB1bGxSZXF1ZXN0NTIxMDY0Mzk1
37,854
CLN: Another unused script
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3
2020-11-14T21:46:32Z
2020-11-17T17:09:20Z
2020-11-17T17:09:16Z
MEMBER
null
xref https://github.com/pandas-dev/pandas/pull/37825 Another script that looks unused and undocumented
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37,855
DOC: Add a reference to window.rst in computation.rst
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0
2020-11-14T21:52:54Z
2020-11-15T19:44:11Z
2020-11-15T17:25:42Z
MEMBER
null
xref https://github.com/pandas-dev/pandas/pull/37575#issuecomment-727235030
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743,090,812
MDExOlB1bGxSZXF1ZXN0NTIxMDY4MjUy
37,856
DEP: update Versioneer
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2
2020-11-14T22:25:58Z
2020-12-05T18:50:45Z
2020-11-17T12:55:16Z
MEMBER
null
bump versioneer from 0.15 to 0.19 ``` (pandas-dev) fangchenli@Fangchens-MacBook-Pro pandas-fangchenli % python setup.py version running version keywords are unexpanded, not using got version from VCS {'version': '1.2.0.dev0+1185.g82894a4b6', 'full-revisionid': '82894a4b6329b8af74bb9c593858453a01b91bf6', 'dirty': False, 'error': None, 'date': '2020-11-14T16:24:02-0600'} Version: 1.2.0.dev0+1185.g82894a4b6 full-revisionid: 82894a4b6329b8af74bb9c593858453a01b91bf6 dirty: False date: 2020-11-14T16:24:02-0600 ```
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37,857
CLN: remove something.xlsx
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3
2020-11-15T01:31:32Z
2020-11-15T04:17:10Z
2020-11-15T04:14:12Z
CONTRIBUTOR
null
`test_register_writer` in `pandas/tests/io/excel/test_writers.py` wasn't expecting that `something.xls` and `something.xlsx` will ever be created. Since #37639, `ExcelWriter` opens the file which will create it.
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37,858
CI: xfail a windows test
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1
2020-11-15T02:41:45Z
2020-11-15T15:15:14Z
2020-11-15T10:22:41Z
MEMBER
null
At least we can fix a subset of the windows builds.
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37,859
QST: Is the behavior between "Index.astype" and "Series.astype" different ??
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2020-11-15T02:48:48Z
2020-11-16T07:48:12Z
2020-11-16T01:16:30Z
NONE
null
#### Question about pandas When I cast the type with `astype` for `Index` or `Series`, I noticed that their behavior for `bool` casting is slightly different. ```python >>> pd.Series([1, None]).astype(bool) 0 True 1 True dtype: bool >>> pd.Index([1, None]).astype(bool) Index([True, False], dtype='object') ``` As shown above, `None` is casted `True` from `Series.astype`, but casted `False` from `Index.astype`. Is this normal for some reason?? I used pandas 1.1.4. Thanks :)
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37,860
CLN: use putmask_simple instead of putmask
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2020-11-15T04:59:22Z
2020-11-17T01:34:21Z
2020-11-17T01:18:49Z
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37,861
BUG: Prevent Series.isin from unwantedly casting isin values from float to integer (GH21804)
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2020-11-15T09:26:58Z
2020-11-15T18:26:09Z
2020-11-15T18:26:09Z
CONTRIBUTOR
null
- [x] closes #21804 - [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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2020-11-15T15:30:45Z
2020-12-03T07:54:23Z
2020-11-24T13:38:08Z
MEMBER
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- [ ] xref #37715 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry - Handle two type ignore items in ``pandas/io/formats/excel.py`` - De-duplicate ``has_aliases`` variable by extracting property - Add typing for iterators yielding ``ExcelCell`` - Use named arguments for ``ExcelCell`` on some occasions (in two places de-duplicate by updating kwargs inplace)
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The DatetimeIndex returns `self.asi8.argsort(*args, **kwargs)`, while the DatetimeArray uses the M8[ns] values. This puts NaTs at the front for DTI and the end for DTA. Changing the DTI method (actually the DTI/TDI/PI methods) to match their array counterparts breaks 12 tests, 11 of them resample, 1 test_grouping.
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13
2020-11-15T16:35:06Z
2020-11-26T21:12:43Z
2020-11-26T00:31:47Z
MEMBER
null
- [x] closes #5401 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This is a first draft of a ``cross`` method for merge operations. As suggested by @jreback I added a new column and dispatched to ``inner`` as a first naive implementation. I am currently wondering, if there would be a better place to adjust the arguments than the places I selected. I wanted to avoid to modify ``self`` in some method called within the constructor, so i modified the inputs before adding the parameters to ``self``. This currently does not support the ``cross`` method for join. If we get a consensus where to put the modifications, I would add support for ``join``. Also have to add more tests probably and something to the userguide Have to look into the performance afterwards. Copies of the Left and Right frames may be a big performance hit for bigger frames?
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CLN: share some more datetimelike index methods
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2020-11-15T16:37:01Z
2020-11-18T16:21:25Z
2020-11-18T13:40:38Z
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TYP: NDFrame sort_values signature
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1
2020-11-15T17:08:21Z
2021-01-10T23:41:00Z
2021-01-10T23:40:49Z
MEMBER
null
#### NDFrame sort_values and inheritance The question is related to method ``sort_values`` of ``NDFrame``, ``DataFrame`` and ``Series``. When trying to close one issue in (#37715) below ``` pandas/core/frame.py:5361: def sort_values( # type: ignore[override] ``` I found out that the function signatures for ``NDFrame`` and ``DataFrame`` do not match because of the argument ``by``. That was the cause of the mypy error. For ``Series.sort_values`` it is reasonable not to have ``by``, but for ``DataFrame`` it is mandatory. So, the function signatures for ``Series`` and ``DataFrame`` must be different and should not share the common interface. Presumably, currently the method ``NDFrame.sort_values`` only stores the docstring for ``DataFrame.sort_values``. It is reasonable to move the docstring to ``DataFrame.sort_values`` and completely remove abstract method ``NDFrame.sort_values``? This will solve the problem with incorrect overriding.
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API: membership checks on ExtensionArray containing NA values
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21
2020-11-15T17:22:18Z
2020-12-03T19:11:39Z
2020-11-29T19:11:30Z
CONTRIBUTOR
null
Membership checks on ExtensionArrays containing `NA` values raises ValueError in some circumstances (but not in other): ```python >>> arr1 = pd.array(["a", pd.NA]) >>> arr2 = pd.array([pd.NA, "a"]) >>> "a" in arr1 True # ok >>> "a" in arr2 TypeError: boolean value of NA is ambiguous # not ok >>> pd.NA in arr1 TypeError: boolean value of NA is ambiguous # not ok >>> pd.NA in arr2 True # ok ``` So overall quite random failures. This PR fixes this problem by adding a custom `__contains__` method on `ExtensionArray`. I assume that we want `pd.NA in arr1` to keep returning True. Note however that `np.nan in np.array([np.nan])` return False, so pandas' behaviour is different.
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REF: prepare dataframe info for series info
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2020-11-15T18:53:36Z
2020-12-03T07:57:23Z
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Precursor for #37320 Refactor ``pandas/io/formats/info.py`` to simplify further introduction of ``Series.info``. Basically what is done here: - Move docstring to ``BaseInfo`` from ``DataFrameInfo`` - supposedly will be shared with ``SeriesInfo`` - Move ``col_count``, ``ids`` from ``BaseInfo`` to ``DataFrameInfo`` (will not be relevant to ``SeriesInfo``) - Move ``memory_usage_bytes`` to ``DataFrameInfo`` (will have different implementation for ``SeriesInfo``) - Extract ``InfoPrinterAbstract``. Concrete classes will differ by the ``_create_table_builder`` - Move common methods and properties from ``DataFrameTableBuilder`` to ``TableBuilderAbstract`` - Extract ``TableBuilderVerboseMixin`` from ``DataFrameTableBuilderVerbose`` as the generator functions there will be used for verbose series info builders I suggest moving the substitution decorator for the docstring from ``pandas/core/frame.py`` to ``pandas/io/formats/info.py`` later on in a separate PR.
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- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Currently 4 tests failing locally bc lib.infer_dtype raises on DecimalArray and JsonArray (xref #37367) Not _remotely_ enough testing. cc @jorisvandenbossche
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2020-11-15T19:50:09Z
2020-11-26T16:03:45Z
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- [x] closes #37768 - [x] closes #37821 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This would add support for the documented keyword ```min_count``. If we decide to move forward with this, we have to decide what to do in the following case: ``` df = DataFrame({"a": [1] * 3, "b": [np.nan] * 3}) result = df.groupby("a").func(min_count=0) ``` ``first`` and ``last`` return ``0.0`` which is fine I think and consistent with ``sum``, but ``min`` returns ``inf`` while ``max`` returns ``-inf``. Default parameter is set to ``1`` to avoid backwards incompatible changes. We should keep this at least until 2.0 If we decide to not implement ``min_count`` here, we should adjust the docs and the function signatures for the groupby functions. cc @rhshadrach
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@simonjayhawkins two questions: 1) is there a nice way to annotate the `values` arg (maybe a Protocol thing?) and 2) is the use of `cls.__annotations__["_data"]` an egregious antipattern?
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MDExOlB1bGxSZXF1ZXN0NTIxMjU2OTg4
37,873
BUG: __getitem__ raise blank KeyError for IntervalIndex and missing keys
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15
2020-11-15T20:46:31Z
2020-11-26T21:45:48Z
2020-11-26T00:40:36Z
MEMBER
null
- [x] closes #27365 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Without ``tolist`` error would look like ``KeyError: array([6])``
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37,874
BUG in reindex raises IndexingError when df is empty sometimes
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1
2020-11-15T21:28:31Z
2020-11-17T08:35:37Z
2020-11-17T01:26:21Z
MEMBER
null
- [x] closes #27315 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Build on top of #27326
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DOC: Fix EX01 issues in docstrings
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2020-11-15T21:29:59Z
2021-03-22T17:03:32Z
null
CONTRIBUTOR
null
#### Location of the documentation In various pandas modules. See list below for the complete list of functions raising EX01 errors. #### Documentation problem The listed functions are missing the example section, i.e. code EX01. #### Suggested fix for documentation As proposed in #27977, I attach the list of raised errors below. Use this thread to comment on which function/module you will be working so we don't duplicate work. Please mention this issue in your PR so that the list below can be updated. #### Current errors: (checked means someone is working on them) - [X] pandas.Timestamp.asm8 - [ ] pandas.Timestamp.dayofweek - [x] pandas.Timestamp.day_of_week - [ ] pandas.Timestamp.dayofyear - [x] pandas.Timestamp.day_of_year - [x] pandas.Timestamp.days_in_month - [ ] pandas.Timestamp.daysinmonth - [x] pandas.Timestamp.is_leap_year - [x] pandas.Timestamp.is_month_end - [x] pandas.Timestamp.is_month_start - [x] pandas.Timestamp.is_quarter_end - [x] pandas.Timestamp.is_quarter_start - [x] pandas.Timestamp.is_year_end - [x] pandas.Timestamp.is_year_start - [x] pandas.Timestamp.quarter - [ ] pandas.Timestamp.resolution - [x] pandas.Timestamp.tz - [x] pandas.Timestamp.week - [ ] pandas.Timestamp.weekofyear - [ ] pandas.Timestamp.astimezone - [x] pandas.Timestamp.ceil - [x] pandas.Timestamp.combine - [ ] pandas.Timestamp.ctime - [ ] pandas.Timestamp.date - [x] pandas.Timestamp.day_name - [ ] pandas.Timestamp.dst - [x] pandas.Timestamp.floor - [ ] pandas.Timestamp.freqstr - [x] pandas.Timestamp.fromordinal - [x] pandas.Timestamp.fromtimestamp - [ ] pandas.Timestamp.isocalendar - [ ] pandas.Timestamp.isoweekday - [x] pandas.Timestamp.month_name - [x] pandas.Timestamp.normalize - [x] pandas.Timestamp.now - [x] pandas.Timestamp.replace - [x] pandas.Timestamp.round - [x] pandas.Timestamp.strftime - [ ] pandas.Timestamp.strptime - [ ] pandas.Timestamp.time - [x] pandas.Timestamp.timestamp - [ ] pandas.Timestamp.timetuple - [ ] pandas.Timestamp.timetz - [ ] pandas.Timestamp.to_datetime64 - [x] pandas.Timestamp.to_numpy - [x] pandas.Timestamp.to_julian_date - [x] pandas.Timestamp.to_period - [x] pandas.Timestamp.to_pydatetime - [x] pandas.Timestamp.today - [ ] pandas.Timestamp.toordinal - [x] pandas.Timestamp.tz_convert - [x] pandas.Timestamp.tz_localize - [ ] pandas.Timestamp.tzname - [x] pandas.Timestamp.utcfromtimestamp - [x] pandas.Timestamp.utcnow - [ ] pandas.Timestamp.utcoffset - [ ] pandas.Timestamp.utctimetuple - 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743,352,266
MDExOlB1bGxSZXF1ZXN0NTIxMjY0OTM4
37,876
CLN: Adding comment/more info about a possible alternative approach to murmur2-hash
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1
2020-11-15T21:47:40Z
2020-11-15T23:12:32Z
2020-11-15T23:12:27Z
CONTRIBUTOR
null
Small comment as requested here: https://github.com/pandas-dev/pandas/pull/36729#discussion_r522956690
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MDExOlB1bGxSZXF1ZXN0NTIxMjY3OTA4
37,877
DEPR: Index.asi8
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3
2020-11-15T22:10:38Z
2020-11-19T00:27:24Z
2020-11-19T00:22:36Z
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
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37,878
ENH: Support groupby.ewm operations
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6
2020-11-15T22:12:32Z
2020-11-18T01:38:45Z
2020-11-18T00:36:49Z
MEMBER
null
- [x] closes #16037 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Additionally enables a Numba engine for `groupby(...).ewm(...).mean(...)` ``` In [1]: df = pd.DataFrame({"A": range(10_000), "B": range(10_000)}) In [2]: gb_ewm = df.groupby("A").ewm(com=1.0) --cache time first In [3]: %timeit -r 1 -n 1 gb_ewm.mean(engine='numba') 1.02 s ± 0 ns per loop (mean ± std. dev. of 1 run, 1 loop each) In [4]: %timeit gb_ewm.mean(engine='numba') 578 ms ± 28.6 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) In [5]: %timeit df.groupby('A').apply(lambda x: x.ewm(com=1.0).mean()) 3.43 s ± 208 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) In [6]: %timeit gb_ewm.mean(engine='cython') 4.19 s ± 204 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) ```
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CI: DataFrame.apply(np.any)
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1
2020-11-15T22:35:51Z
2020-11-16T00:41:01Z
2020-11-16T00:40:58Z
MEMBER
null
Should fix these failures https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=47831&view=logs&j=f016abb9-7827-5fa2-935a-22bd9b1477b6&t=c86edbe1-8c1d-5e5c-5b6f-d970fa4acf6d
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37,880
BUG: Failed to install Pandas with pip3 and Python3.9 on macOS Big Sur
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3
2020-11-15T23:42:46Z
2020-11-16T00:04:05Z
2020-11-15T23:56:19Z
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 pip install pandas pip3 install pandas pip3 install pandas --no-build-isolation --no-cache-dir sudo pip3 install pandas --no-cache-dir ``` #### Problem description I've done a clean installation of macOS Big Sur and a clean install of Python3.9 via Homebrew (`brew install python3`). After that I installed pip3 with `brew install pip` command and I wanted to install Pandas but I'm always getting the following error. I've tried with all the commands listed above to install Pandas on macOS Big Sur and Python3... Anyone can help? These are the only packages actually installed: Package Version ---------- ------- pip 20.2.4 setuptools 50.3.2 wheel 0.35.1 #### Expected Output #### Output of ``pip install pandas`` <details> Getting requirements to build wheel ... error ERROR: Command errored out with exit status 1: command: /usr/local/opt/python@3.9/bin/python3.9 /usr/local/lib/python3.9/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/tmpzr3sthd6 cwd: /private/var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/pip-install-pvlaq6iq/pandas Complete output (23 lines): init_dgelsd failed init Traceback (most recent call last): File "/usr/local/lib/python3.9/site-packages/pip/_vendor/pep517/_in_process.py", line 280, in <module> main() File "/usr/local/lib/python3.9/site-packages/pip/_vendor/pep517/_in_process.py", line 263, in main json_out['return_val'] = hook(**hook_input['kwargs']) File "/usr/local/lib/python3.9/site-packages/pip/_vendor/pep517/_in_process.py", line 114, in get_requires_for_build_wheel return hook(config_settings) File "/private/var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/pip-build-env-ly4c8n5_/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 149, in get_requires_for_build_wheel return self._get_build_requires( File "/private/var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/pip-build-env-ly4c8n5_/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 130, in _get_build_requires self.run_setup() File "/private/var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/pip-build-env-ly4c8n5_/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 253, in run_setup super(_BuildMetaLegacyBackend, File "/private/var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/pip-build-env-ly4c8n5_/overlay/lib/python3.9/site-packages/setuptools/build_meta.py", line 145, in run_setup exec(compile(code, __file__, 'exec'), locals()) File "setup.py", line 488, in <module> import numpy as np File "/private/var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/pip-build-env-ly4c8n5_/overlay/lib/python3.9/site-packages/numpy/__init__.py", line 286, in <module> raise RuntimeError(msg) RuntimeError: Polyfit sanity test emitted a warning, most likely due to using a buggy Accelerate backend. If you compiled yourself, see site.cfg.example for information. Otherwise report this to the vendor that provided NumPy. RankWarning: Polyfit may be poorly conditioned ---------------------------------------- ERROR: Command errored out with exit status 1: /usr/local/opt/python@3.9/bin/python3.9 /usr/local/lib/python3.9/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /var/folders/zv/0q58rjv549bd4qjdqlrwlvl40000gn/T/tmpzr3sthd6 Check the logs for full command output. </details>
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REF: simplify setitem_with_indexer
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0
2020-11-15T23:54:02Z
2020-11-17T01:28:59Z
2020-11-17T01:23:41Z
MEMBER
null
Good news: this is the last pure-cleanup before we start actually changing the logic.
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37,882
BUG: `pandas.Index` cannot be subclassed (despite saying it can be in the docs)
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2020-11-16T00:49:14Z
2021-08-14T05:12:32Z
null
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python import pandas class CustomIndex(pandas.Index): def __new__(cls, data, **kwargs): return super().__new__(cls, data, **kwargs).view(cls) def __init__(self, data, **kwargs): super().__init__(self, data, **kwargs) if __name__ == '__main__': index = CustomIndex([1,2,3]) print(type(index), index) ``` The result is: `<class 'pandas.core.indexes.numeric.Int64Index'> Int64Index([1, 2, 3], dtype='int64')` #### Problem description In the [`pandas` docs](https://pandas.pydata.org/pandas-docs/stable/development/internals.html): "The motivation for having an Index class in the first place was to enable different implementations of indexing. This means that it’s possible for you, the user, to implement a custom Index subclass that may be better suited to a particular application than the ones provided in pandas." #### Expected Output `<class 'CustomIndex'> CustomIndex([1, 2, 3], dtype='int64')` #### Output of ``pd.show_versions()`` <details> ``` >>> pd.show_versions() INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.8.5.final.0 python-bits : 64 OS : Darwin OS-release : 20.1.0 Version : Darwin Kernel Version 20.1.0: Sat Oct 31 00:07:11 PDT 2020; root:xnu-7195.50.7~2/RELEASE_X86_64 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 pip : 20.2.4 setuptools : 50.3.2 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : None IPython : 7.19.0 pandas_datareader: None bs4 : None bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : 2.0.0 pytables : None pyxlsb : None s3fs : None scipy : 1.5.4 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : None ``` </details>
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743,415,368
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37,883
BUG: DataFrame.from_dict gives me 3 duplicates
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3
2020-11-16T02:16:17Z
2020-11-17T02:22:27Z
2020-11-16T02:39:32Z
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. get_omdb_data function is defined to get movie information in JSON format from OMDB website and convert it to dataframe with pandas ```DataFrame.from_dict``` function. However, "Titanic" will give me 3 DF duplicates. I also tried with "Godfather" which has only 1 record. ```python def get_omdb_data(movie): """[get OMDB movie data in the world] Args: movie ([str]): [valid movie name] """ movie_name = str(movie) middle_string = f'i={i_string}&apikey={apikey}&t=' url = serviceurl + middle_string + movie_name try: uh = urllib.request.urlopen(url) except HTTPError as e: print("Sorry! Could not retrieve anything on {}".format(movie_name)) return None except URLError as e: print("Failed to reach a server.") print("Reason:", e.reason) return None else: data = uh.read().decode() json_data = json.loads(data) if json_data['Response'] == 'True': print( "Retrieved data on {}. Total {} characters read.".format( movie_name, len(data) ) ) return json_data else: print("Sorry! {} can not be found. Your spelling might be wrong".format(movie_name)) return None data = get_omdb_data('Titanic') print(data) df = pd.DataFrame.from_dict(data) print(df) ``` #### Problem description Retrieved data on Titanic. Total 1051 characters read. {'Title': 'Titanic', 'Year': '1997', 'Rated': 'PG-13', 'Released': '19 Dec 1997', 'Runtime': '194 min', 'Genre': 'Drama, Romance', 'Director': 'James Cameron', 'Writer': 'James Cameron', 'Actors': 'Leonardo DiCaprio, Kate Winslet, Billy Zane, Kathy Bates', 'Plot': 'A seventeen-year-old aristocrat falls in love with a kind but poor artist aboard the luxurious, ill-fated R.M.S. Titanic.', 'Language': 'English, Swedish, Italian, French', 'Country': 'USA, Mexico, Australia, Canada', 'Awards': 'Won 11 Oscars. Another 112 wins & 83 nominations.', 'Poster': 'https://m.media-amazon.com/images/M/MV5BMDdmZGU3NDQtY2E5My00ZTliLWIzOTUtMTY4ZGI1YjdiNjk3XkEyXkFqcGdeQXVyNTA4NzY1MzY@._V1_SX300.jpg', 'Ratings': [{'Source': 'Internet Movie Database', 'Value': '7.8/10'}, {'Source': 'Rotten Tomatoes', 'Value': '89%'}, {'Source': 'Metacritic', 'Value': '75/100'}], 'Metascore': '75', 'imdbRating': '7.8', 'imdbVotes': '1,029,426', 'imdbID': 'tt0120338', 'Type': 'movie', 'DVD': 'N/A', 'BoxOffice': 'N/A', 'Production': '20th Century Fox, Lightstorm Entertainment, Paramount Pictures', 'Website': 'N/A', 'Response': 'True'} Title Year ... Website Response 0 Titanic 1997 ... N/A True 1 Titanic 1997 ... N/A True 2 Titanic 1997 ... N/A True **[3 rows x 25 columns]** #### Expected Output Above has Titanic information in JSON format. DataFrame.from_dict should give me 1 Titanic record, not 3. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 2a7d3326dee660824a8433ffd01065f8ac37f7d6 python : 3.8.2.final.0 python-bits : 64 OS : Windows OS-release : 10 Version : 10.0.19041 machine : AMD64 processor : Intel64 Family 6 Model 58 Stepping 9, GenuineIntel byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : English_United States.utf8 pandas : 1.1.2 numpy : 1.19.2 pytz : 2020.1 dateutil : 2.8.1 pip : 20.2.3 setuptools : 41.2.0 Cython : 0.29.21 pytest : 6.1.1 hypothesis : None sphinx : 3.2.1 blosc : None feather : None xlsxwriter : None lxml.etree : 4.6.1 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.18.1 pandas_datareader: None bs4 : 4.9.3 bottleneck : None fsspec : None fastparquet : None gcsfs : None matplotlib : 3.3.2 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.5.2 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : 1.2.0 xlwt : None numba : None </details>
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REF: make casting explicit in CategoricalIndex
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0
2020-11-16T02:49:43Z
2020-11-17T01:32:52Z
2020-11-17T01:28:53Z
MEMBER
null
Motivated by trying to get stricter typing in CategoricalIndex._shallow_copy.
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REF: Index._intersection
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0
2020-11-16T02:51:39Z
2020-11-17T01:26:47Z
2020-11-17T01:16:31Z
MEMBER
null
Follow the same pattern as Index._union. Motivated by trying to get stricter typing in CategoricalIndex._shallow_copy, which is blocked by pinning down return types for set ops.
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37,886
REF: Use more memory views in rolling aggregations
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2020-11-16T03:02:33Z
2020-11-16T17:02:48Z
2020-11-16T17:02:17Z
MEMBER
null
- [x] tests added / passed
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TST: parametrize test_info
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2020-11-16T06:09:56Z
2020-12-03T07:56:54Z
2020-11-25T22:35:38Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Precursor for #37320 - Parametrize tests - Rename some of test functions
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37,888
BUG: df.str.contains(XX) return False when XX contains "+" character
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2020-11-16T06:25:42Z
2020-11-17T02:28:12Z
2020-11-17T02:28:11Z
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- [ y] I have checked that this issue has not already been reported. #### Code Sample, a copy-pastable example ```python df = pd.DataFrame(["ABC", "ABC+534"], index=["AA","BB"]).T df["BB"].str.contains("ABC+5") ``` returns ``` 0 False Name: BB, dtype: bool ``` #### Problem description When I ran the `df.str.contains(XX)`, I found a new bug. I run the below notebook, it returns False, despite it is definitely include keyword with in the cell.
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37,889
BUG:BadZipFile CRC-32 for file 'docProps/core.xml' when I use pandas read excel accord an error "
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2020-11-16T08:18:47Z
2020-11-18T03:02:59Z
2020-11-18T03:02:41Z
NONE
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- [ ] I have checked that this issue has not already been reported. - [ ] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- **Note**: Please read [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) detailing how to provide the necessary information for us to reproduce your bug. #### Code Sample, a copy-pastable example ```python # Your code here ``` #### Problem description [this should explain **why** the current behaviour is a problem and why the expected output is a better solution] #### Expected Output #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] </details>
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BUG:BadZipFile CRC-32 for file 'docProps/core.xml' when I use pandas read excel accord an error "BadZipFile CRC-32 for file 'docProps/core.xml' ". Python
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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 # Your code here ``` #### Problem description [this should explain **why** the current behaviour is a problem and why the expected output is a better solution] #### Expected Output #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] </details>
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CI upgrade pyupgrade to v2.7.4
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2
2020-11-16T09:02:25Z
2020-11-17T09:23:09Z
2020-11-17T09:23:09Z
MEMBER
null
This should just be a matter of changing the version number to v2.7.4 for pyupgrade in .pre-commit-config.yaml, and checking that all still passes: ``` pre-commit run pyupgrade --all-files ``` If it does, please open a PR to upgrade - else, report on any failures
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BUG: pandas not connecting to private S3 endpoint
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2020-11-16T09:36:53Z
2021-01-07T12:16:18Z
2021-01-07T12:16:18Z
NONE
null
#### Problem description Connecting to https://bucket.s3.amazonaws.com rather then private endpoint ```python df = pd.read_parquet('s3://bucket/file.parquet', storage_options={'client_kwargs':{'endpoint_url': S3_ENDPOINT}}) ``` as workaround I do: ```python # ecs is a S3FileSystem object with client_kwargs with ecs.open('bucket/file.parquet', 'rb') as f: df = pd.read_parquet(f) ``` #### Expected Output Connecting to private S3 bucket #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.8.3.final.0 python-bits : 64 OS : Linux OS-release : 3.10.0-1127.19.1.el7.x86_64 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.5 numpy : 1.18.5 pytz : 2020.1 dateutil : 2.8.1 pip : 20.1.1 setuptools : 49.1.0.post20200704 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.16.1 pandas_datareader: None bs4 : None bottleneck : None fastparquet : 0.4.0 gcsfs : None lxml.etree : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : 0.17.1 pytables : None pytest : None pyxlsb : None s3fs : 0.4.2 scipy : None sqlalchemy : 1.3.18 tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : 0.50.1 </details>
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BUG: fixed length string data type specifiers, are ignored on astype calls, if they are passed in a dictionary
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2020-11-16T14:03:23Z
2021-08-14T05:13:56Z
null
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. --- **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 def test_astype_string_conversion(): df = pd.DataFrame([{'n': 0, 's':'qwerty'}] * 3) direct_conversion_df = df.copy() direct_conversion_df['s'] = direct_conversion_df['s'].astype('|S10') # direct column conversion : String to fixed len bytes works as expected assert direct_conversion_df['s'].dtype != np.dtype('O') # Where as type specified with a dictionary dictionary_conversion_df = df.astype({'n': 'float64', 's':'|S10'}) # the float conversion works, assert dictionary_conversion_df['n'].dtype == np.dtype('float64') # but the strings are still objects, assert dictionary_conversion_df['s'].dtype != np.dtype('O') # FAIL ``` #### Problem description pandas.DataFrame.astype, 'dtype' parameter accepts a dictionary which can specify the columns to be converted. It looks like limited length string specifiers, e.g: '|S10', are ignored, if they are specified in the dictionary. Directly converting columns to the same type, works as expected. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.8.6.final.0 python-bits : 64 OS : Linux OS-release : 4.19.104-microsoft-standard Version : #1 SMP Wed Feb 19 06:37:35 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : C.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 pip : 20.1.1 setuptools : 47.3.1.post20200622 Cython : 0.29.21 pytest : 5.4.3 hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : 1.1 pymysql : None psycopg2 : 2.8.5 (dt dec pq3 ext lo64) jinja2 : 2.11.2 IPython : 7.19.0 pandas_datareader: None bs4 : 4.9.3 bottleneck : None fsspec : 0.8.4 fastparquet : 0.4.1 gcsfs : None matplotlib : 3.2.2 numexpr : 2.7.1 odfpy : None openpyxl : None pandas_gbq : None pyarrow : 2.0.0 pytables : None pyxlsb : None s3fs : None scipy : 1.5.0 sqlalchemy : 1.3.18 tables : 3.6.1 tabulate : None xarray : 0.16.1 xlrd : None xlwt : None numba : 0.51.2 </details>
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BUG: rowLabels and colLabels args in pandas.plotting.table have no effect (#37811)
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2020-11-16T16:02:06Z
2021-07-19T16:15:59Z
2021-02-11T01:41:19Z
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- [ ] closes #37811 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] Pass `rowLabels` and `colLabels` args to `plot_backend.table`. Docs improved: the descriptions of `rowLables` and `colLabels` added to their own entries in the docstring.
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BUG: pandas read_csv silently switches date parsing scheme in the middle of reading file corrupting data
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3
2020-11-16T17:55:46Z
2020-11-17T03:38:31Z
2020-11-17T03:38:30Z
NONE
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In pandas 1.1.4 ```python # Your code here pd.DataFrame(data={'timestamp': ['13/06/2018', '12/06/2018']}).to_csv('test.csv', index=False) pd.read_csv('test.csv', parse_dates=['timestamp']) Out[84]: timestamp 0 2018-06-13 1 2018-12-06 ``` #### Problem description I provoked pandas here (initially by mistake) by letting it parse a file with date format day / month / year, with it's default parser month / day / year. To my horror, it parses the ones that give a valid date with the default parser, and automatically uses the alternative parser on the ones that fails. Giving a mix of dates and without any warning. #### Expected Output Pandas should have failed with an error, or a very severe warning when a date failed to parse with the same parser as the other dates. It should not be allowed to use different parsing schemes within the same data file. <details> pandas : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 </details>
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BUG: RangeIndex is being materialized to a column while writing to parquet file when `index=True`
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2020-11-16T18:07:34Z
2020-11-18T13:56:13Z
2020-11-18T13:55:53Z
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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[20]: import pandas as pd In[21]: import pyarrow as pa In[22]: pdf = pd.DataFrame({'a':[1, 2, 3], 'b':[10, 11, 12]}, index=pd.RangeIndex(2, 5, 1)) In[23]: pdf.to_parquet('temp', index=True) In[24]: pdf Out[24]: a b 2 1 10 3 2 11 4 3 12 In[25]: pd.read_parquet('temp') Out[25]: a b 2 1 10 3 2 11 4 3 12 In[26]: x = pa.parquet.read_metadata('temp') In[27]: x.metadata Out[27]: {b'ARROW:schema': b'/////3ADAAAQAAAAAAAKAA4ABgAFAAgACgAAAAABBAAQAAAAAAAKAAwAAAAEAAgACgAAAIQCAAAEAAAAAQAAAAwAAAAIAAwABAAIAAgAAAAIAAAAEAAAAAYAAABwYW5kYXMAAE4CAAB7ImluZGV4X2NvbHVtbnMiOiBbIl9faW5kZXhfbGV2ZWxfMF9fIl0sICJjb2x1bW5faW5kZXhlcyI6IFt7Im5hbWUiOiBudWxsLCAiZmllbGRfbmFtZSI6IG51bGwsICJwYW5kYXNfdHlwZSI6ICJ1bmljb2RlIiwgIm51bXB5X3R5cGUiOiAib2JqZWN0IiwgIm1ldGFkYXRhIjogeyJlbmNvZGluZyI6ICJVVEYtOCJ9fV0sICJjb2x1bW5zIjogW3sibmFtZSI6ICJhIiwgImZpZWxkX25hbWUiOiAiYSIsICJwYW5kYXNfdHlwZSI6ICJpbnQ2NCIsICJudW1weV90eXBlIjogImludDY0IiwgIm1ldGFkYXRhIjogbnVsbH0sIHsibmFtZSI6ICJiIiwgImZpZWxkX25hbWUiOiAiYiIsICJwYW5kYXNfdHlwZSI6ICJpbnQ2NCIsICJudW1weV90eXBlIjogImludDY0IiwgIm1ldGFkYXRhIjogbnVsbH0sIHsibmFtZSI6IG51bGwsICJmaWVsZF9uYW1lIjogIl9faW5kZXhfbGV2ZWxfMF9fIiwgInBhbmRhc190eXBlIjogImludDY0IiwgIm51bXB5X3R5cGUiOiAiaW50NjQiLCAibWV0YWRhdGEiOiBudWxsfV0sICJjcmVhdG9yIjogeyJsaWJyYXJ5IjogInB5YXJyb3ciLCAidmVyc2lvbiI6ICIxLjAuMSJ9LCAicGFuZGFzX3ZlcnNpb24iOiAiMS4xLjQifQAAAwAAAIQAAABEAAAABAAAAJj///8AAAECHAAAAAwAAAAEAAAAAAAAAIj///8AAAABQAAAABEAAABfX2luZGV4X2xldmVsXzBfXwAAANT///8AAAECHAAAAAwAAAAEAAAAAAAAAMT///8AAAABQAAAAAEAAABiAAAAEAAUAAgABgAHAAwAAAAQABAAAAAAAAECJAAAABQAAAAEAAAAAAAAAAgADAAIAAcACAAAAAAAAAFAAAAAAQAAAGEAAAAAAAAA', b'pandas': b'{"index_columns": ["__index_level_0__"], "column_indexes": [{"name": null, "field_name": null, "pandas_type": "unicode", "numpy_type": "object", "metadata": {"encoding": "UTF-8"}}], "columns": [{"name": "a", "field_name": "a", "pandas_type": "int64", "numpy_type": "int64", "metadata": null}, {"name": "b", "field_name": "b", "pandas_type": "int64", "numpy_type": "int64", "metadata": null}, {"name": null, "field_name": "__index_level_0__", "pandas_type": "int64", "numpy_type": "int64", "metadata": null}], "creator": {"library": "pyarrow", "version": "1.0.1"}, "pandas_version": "1.1.4"}'} In[28]: pd.read_parquet('temp').index Out[28]: Int64Index([2, 3, 4], dtype='int64') In[29]: pdf.index Out[29]: RangeIndex(start=2, stop=5, step=1) ``` #### Problem description The RangeIndex object should not be materialized and stored in the parquet file. Instead pandas should be storing the rangeIndex in metadata under `index_columns` like below when we pass `index=None`. #### Expected Output ```python In[32]: pdf.to_parquet('temp', index=None) In[33]: pd.read_parquet('temp') Out[33]: a b 2 1 10 3 2 11 4 3 12 In[34]: pd.read_parquet('temp').index Out[34]: RangeIndex(start=2, stop=5, step=1) In[35]: x = pa.parquet.read_metadata('temp') In[36]: x.metadata Out[36]: {b'ARROW:schema': b'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', b'pandas': b'{"index_columns": [{"kind": "range", "name": null, "start": 2, "stop": 5, "step": 1}], "column_indexes": [{"name": null, "field_name": null, "pandas_type": "unicode", "numpy_type": "object", "metadata": {"encoding": "UTF-8"}}], "columns": [{"name": "a", "field_name": "a", "pandas_type": "int64", "numpy_type": "int64", "metadata": null}, {"name": "b", "field_name": "b", "pandas_type": "int64", "numpy_type": "int64", "metadata": null}], "creator": {"library": "pyarrow", "version": "1.0.1"}, "pandas_version": "1.1.4"}'} ``` #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.7.8.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-53-generic Version : #59-Ubuntu SMP Wed Oct 21 09:38:44 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 pip : 20.2.4 setuptools : 49.6.0.post20201009 Cython : 0.29.21 pytest : 6.1.2 hypothesis : 5.41.1 sphinx : 3.3.0 blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.19.0 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>
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BUG: Empty dataframe with valid index object is not being read correctly via parquet reader
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3
2020-11-16T18:18:42Z
2020-11-18T13:50:05Z
2020-11-18T13:49:57Z
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 In[38]: df = pd.DataFrame(index=pd.RangeIndex(0, 10, 1)) In[39]: df.to_parquet('a') In[40]: pd.read_parquet('a') Out[40]: Empty DataFrame Columns: [] Index: [] In[41]: df.to_parquet('a', index=True) In[42]: pd.read_parquet('a') Out[42]: Empty DataFrame Columns: [] Index: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] In[43]: pd.read_parquet('a').index Out[43]: Int64Index([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], dtype='int64')``` ``` #### Problem description When `index` is `None`/`True` parquet reader must retrieve only `RangeIndex` and not empty `RangeIndex` or `Int64Index`. #### Expected Output We should be able to get rangeIndex when we read from parquet file `a`. #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] INSTALLED VERSIONS ------------------ commit : 67a3d4241ab84419856b84fc3ebc9abcbe66c6b3 python : 3.7.8.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-53-generic Version : #59-Ubuntu SMP Wed Oct 21 09:38:44 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.4 numpy : 1.19.4 pytz : 2020.4 dateutil : 2.8.1 pip : 20.2.4 setuptools : 49.6.0.post20201009 Cython : 0.29.21 pytest : 6.1.2 hypothesis : 5.41.1 sphinx : 3.3.0 blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.19.0 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> This could be related to https://github.com/pandas-dev/pandas/issues/37896, but it appears the parquet reader is also not able to retrieve any Index at all when `index` is `None`. Hence filing this as a separate issue.
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2020-11-16T18:31:16Z
2020-11-17T19:56:05Z
2020-11-17T12:57:52Z
MEMBER
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as a precursor to https://github.com/pandas-dev/pandas/pull/35259#discussion_r522951940 there are more changes/additions needed but this PR might get too big to review and push through in a timely manor. overload is required to avoid casts Any is used for any type, whereas should use object. only the abstract classes have been typed. could create a scalar type alias in each of the EA classes similar to DTScalarOrNaT in DatetimeLikeArrayMixin import and expose pandas._libs.missing.NAType in pandas._typing any of these could be done here or as follow-on
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BUG: pd.DataFrame.replace(to_replace: list, method: str) raises TypeError: No matching signature found
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2020-11-16T20:21:10Z
2021-08-14T05:15:11Z
null
CONTRIBUTOR
null
- [x] I have checked that this issue has not already been reported: [search query](https://github.com/pandas-dev/pandas/issues?page=2&q=is%3Aissue+is%3Aopen+replace+Categorical) - [ ] 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: Tested with '1.2.0.dev0+1137.g50b34a4a8') --- #### Code Sample, a copy-pastable example ```python import pandas as pd df = pd.DataFrame({ 'x': pd.Categorical([1, 2, 3], [1, 2, 3]) }) df.replace([1, 2], method='bfill') # > Traceback excerpt: 635 def backfill_inplace(algos_t[:] values, const uint8_t[:] mask, limit=None): # > TypeError: No matching signature found ``` #### Problem description This should work fine, within bounds of considerations like #18250. #### Expected Output Should be equivalent to `pd.Categorical([3, 3, 3], [1,2,3])` (or `pd.Categorical([3, 3, 3], [3])` depending on the what's done with unused categories elsewhere.) #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 50b34a4a8008b6da24c3dac6ae6d66536e463239 python : 3.8.3.final.0 python-bits : 64 OS : Darwin OS-release : 19.4.0 Version : Darwin Kernel Version 19.4.0: Wed Mar 4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 1.2.0.dev0+1137.g50b34a4a8 numpy : 1.18.5 pytz : 2020.1 dateutil : 2.8.1 pip : 20.1.1 setuptools : 47.3.1.post20200616 Cython : 0.29.21 pytest : 5.4.3 hypothesis : 5.16.2 sphinx : 3.1.1 blosc : None feather : None xlsxwriter : 1.2.9 lxml.etree : 4.5.1 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.15.0 pandas_datareader: None bs4 : 4.9.1 bottleneck : 1.3.2 fsspec : 0.7.4 fastparquet : 0.4.0 gcsfs : None matplotlib : 3.2.1 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : 0.17.1 pyxlsb : None s3fs : 0.4.2 scipy : 1.4.1 sqlalchemy : 1.3.17 tables : 3.6.1 tabulate : 0.8.7 xarray : 0.15.1 xlrd : 1.2.0 xlwt : 1.3.0 numba : 0.48.0 </details> Noticed while working on #32542
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quantile function failure
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2020-11-16T21:33:21Z
2021-01-27T19:34:26Z
2020-11-16T23:16:31Z
NONE
null
If I create a dataframe like this: ``` gravity_df = pd.DataFrame(columns=["accel_time_seconds", "gravity_x", "gravity_y", "gravity_z"]) gravity_df['accel_time_seconds'] = list(range(100)) gravity_df.loc[:70, 'gravity_x'] = -0.145438 gravity_df.loc[:70, 'gravity_y'] = -0.355129 gravity_df.loc[:70, 'gravity_z'] = -0.923434 gravity_df.loc[70:, 'gravity_x'] = -0.114892 gravity_df.loc[70:, 'gravity_y'] = -0.428598 gravity_df.loc[70:, 'gravity_z'] = -0.89616 ``` quantile function would not work properly for multiple columns: ``` gravity_df[['gravity_x', 'gravity_y']].quantile(0.5) ``` Error message as follows: ``` --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-25-17d112cd6897> in <module> ----> 1 gravity_df[['gravity_x']].quantile(0.5) ~/.local/share/virtualenvs/crashes-ETafZQlO/lib/python3.7/site-packages/pandas/core/frame.py in quantile(self, q, axis, numeric_only, interpolation) 8279 8280 result = data._data.quantile( -> 8281 qs=q, axis=1, interpolation=interpolation, transposed=is_transposed 8282 ) 8283 ~/.local/share/virtualenvs/crashes-ETafZQlO/lib/python3.7/site-packages/pandas/core/internals/managers.py in quantile(self, axis, consolidate, transposed, interpolation, qs, numeric_only) 533 534 # single block, i.e. ndim == {1} --> 535 values = _concat._concat_compat([b.values for b in blocks]) 536 537 # compute the orderings of our original data ~/.local/share/virtualenvs/crashes-ETafZQlO/lib/python3.7/site-packages/pandas/core/dtypes/concat.py in _concat_compat(to_concat, axis) 172 to_concat = [x.astype("object") for x in to_concat] 173 --> 174 return np.concatenate(to_concat, axis=axis) 175 176 ValueError: need at least one array to concatenate ```
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BUG: obj.loc[listlike] with missing keys and CategoricalIndex
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2020-11-16T22:02:37Z
2020-11-17T15:25:12Z
2020-11-17T12:56:22Z
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 This behavior was deprecated for all other Index subclasses a few years ago and finally removed in 1.0. AFAICT not removing it for CategoricalIndex was an oversight. xref https://github.com/pandas-dev/pandas/commit/8ab61851eeae0d16deaa2f6eafcf59393b06aaeb#r44233424
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37,902
TYP: Add cast to ABC classes.
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7
2020-11-16T23:00:05Z
2020-11-24T16:55:18Z
2020-11-24T13:30:34Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry Implements the idea of @simonjayhawkins from https://github.com/pandas-dev/pandas/issues/27353#issuecomment-526391462 to use cast on ABC classes. Currently only implements ABCDataFrame, ABCNDFrame, and ABCSeries. Previously, mypy would resolve e.g. ABCSeries as any, now it gets resolved as Series. One issue remains: I don't understand why the code below generates this complaint. > pandas/core/common.py:472: error: Incompatible return value type (got "Union[Any, List[Any], Series]", expected "Union[List[Any], ExtensionArray]") [return-value] ``` def convert_to_list_like( values: Union[Scalar, Iterable, AnyArrayLike] ) -> Union[List, AnyArrayLike]: if isinstance(values, (list, np.ndarray, ABCIndex, ABCSeries, ABCExtensionArray)): return values ... ``` One can add Series to the return Union to resolve this, but it doesn't seem like that should be necessary. I'm also getting: > pandas/core/base.py:923: note: Internal mypy error checking function redefinition on the lines ``` def map_f(values, f): return lib.map_infer_mask(values, f, isna(values).view(np.uint8)) ``` where `map_f` is defined in various ways in if-else blocks. I'm not sure if this is a mypy bug.
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MDExOlB1bGxSZXF1ZXN0NTIyMDI5NTcw
37,903
CLN: Unused file 'path_to_file.zip'
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3
2020-11-16T23:07:46Z
2020-11-17T01:10:54Z
2020-11-17T01:06:00Z
CONTRIBUTOR
null
New file [path_to_file.zip](https://github.com/pandas-dev/pandas/blob/master/scripts/path_to_file.zip) was added in #37844. I believe this is file is (accidentally?) generated when running [scripts/validate_docstrings.py](https://github.com/pandas-dev/pandas/blob/master/scripts/validate_docstrings.py) and probably is not needed in the repository.
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MDExOlB1bGxSZXF1ZXN0NTIyMDQ3NTQ0
37,904
DOC: Timestamp EX01 errors
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19
2020-11-16T23:58:34Z
2021-04-30T00:47:25Z
2021-04-30T00:47:01Z
CONTRIBUTOR
null
Example section added for several methods in class [pd.Timestamp](https://github.com/pandas-dev/pandas/blob/1f89b82cc65f512e78b0038975425cc3d0772a05/pandas/_libs/tslibs/timestamps.pyx#L768) - [X] xref #37875 - [ ] tests added / passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry --- Examples added for: - pandas.Timestamp.asm8 - pandas.Timestamp.day_of_week - pandas.Timestamp.day_of_year - pandas.Timestamp.days_in_month - pandas.Timestamp.is_leap_year - pandas.Timestamp.is_month_end - pandas.Timestamp.is_month_start - pandas.Timestamp.is_quarter_end - pandas.Timestamp.is_quarter_start - pandas.Timestamp.is_year_end - pandas.Timestamp.is_year_start - pandas.Timestamp.quarter - pandas.Timestamp.tz - pandas.Timestamp.week - pandas.Timestamp.ceil - pandas.Timestamp.combine - pandas.Timestamp.day_name - pandas.Timestamp.floor - pandas.Timestamp.fromordinal - pandas.Timestamp.fromtimestamp - pandas.Timestamp.month_name - pandas.Timestamp.normalize - pandas.Timestamp.now - pandas.Timestamp.replace - pandas.Timestamp.round - pandas.Timestamp.strftime - pandas.Timestamp.timestamp - pandas.Timestamp.to_numpy - pandas.Timestamp.to_julian_date - pandas.Timestamp.to_period - pandas.Timestamp.to_pydatetime - pandas.Timestamp.today - pandas.Timestamp.tz_convert - pandas.Timestamp.tz_localize - pandas.Timestamp.utcfromtimestamp - pandas.Timestamp.utcnow - pandas.Timestamp.weekday
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MDExOlB1bGxSZXF1ZXN0NTIyMDcxNDA4
37,905
BUG: groupby resample different results with .agg() vs .mean()
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10
2020-11-17T01:09:39Z
2020-12-22T14:07:38Z
2020-12-22T14:07:19Z
CONTRIBUTOR
null
- [x] closes #33548 - [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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CI: update pyupgrade to 2.7.4 in pre-commit
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1
2020-11-17T02:52:50Z
2020-11-17T09:29:22Z
2020-11-17T09:23:09Z
CONTRIBUTOR
null
Updating pyupgrade to 2.7.4 in pre-commit yaml. `pre-commit run pyupgrade --all-files` runs good :+1: - [x] closes #37891 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry - [x] passes `pre-commit run pyupgrade --all-files`
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REF: simplify dt64 formatter functions
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37,909
BUG: use compression=None (again) to avoid inferring compression
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2
2020-11-17T05:00:42Z
2020-11-19T04:12:57Z
2020-11-18T13:24:56Z
CONTRIBUTOR
null
`read_fwf` was using `compression=None` to infer compression (in addition to `compression="infer"`). This is undocumented but was enforced in a test. In #37639, I thought this was the expected behavior for all functions. That as wrong, `read_csv` explicitly states that `compression=None` does not infer any compression.
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2
2020-11-17T08:49:49Z
2020-11-24T00:24:01Z
2020-11-24T00:24:01Z
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 (`1.0.4`). - [X] (optional) I have confirmed this bug exists on the master branch of pandas (`87247370c14629c1797fcf3540c6bd93b777a17e`). --- #### Code Sample, a copy-pastable example ```python import numpy as np import pandas as pd ser1 = pd.Series([1], dtype="Int64") ser2 = pd.Series([1.0], dtype=np.float64) ser1 += ser2 ``` Note that the issue is NOT specific to the integer EA, but happens with all EAs that don't use NumPy dtypes. #### Problem description ``` Traceback (most recent call last): File "bug.py", line 6, in <module> ser1 += ser2 File ".../pandas/core/generic.py", line 11305, in __iadd__ return self._inplace_method(other, type(self).__add__) # type: ignore[operator] File ".../pandas/core/generic.py", line 11289, in _inplace_method if self.ndim == 1 and result._indexed_same(self) and result.dtype == self.dtype: TypeError: Cannot interpret 'Int64Dtype()' as a data type ``` This is likely a fallout of #37508. See here: https://github.com/pandas-dev/pandas/blob/87247370c14629c1797fcf3540c6bd93b777a17e/pandas/core/generic.py#L11283-L11292 There, the result dtype (which is a NumPy dtype in this case) is compared with the EA dtype. This raises the TypeError, because NumPy only allows comparing its dtype objects with "real" NumPy dtypes (and EAs don't provide NumPy-compatible dtypes). #### Expected Output Pass. I'm pretty sure that worked with `1.0.3` (the mentioned PR in question was backported to the `1.0.x` branch between the `1.0.3` and `1.0.4` release).
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37,911
CLN: Add *.zip to .gitignore
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2020-11-17T10:26:39Z
2020-11-17T13:01:31Z
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CONTRIBUTOR
null
- [X] xref #37903 - [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: add two new examples to the transform docs
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3
2020-11-17T17:17:43Z
2020-11-19T18:40:17Z
2020-11-19T18:40:13Z
CONTRIBUTOR
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry This PR adds two examples to the transform user guide. The examples apply the transform method to a groupby object. This is from the PyData Global sprint, from [this issue](https://github.com/MarcoGorelli/PyDataGlobal2020-sprint/issues/5). The examples are taken from [here](https://stackoverflow.com/a/37189976/14583166) and [here](https://stackoverflow.com/a/54417351/14583166).
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CI: fix mypy error
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2020-11-17T19:28:25Z
2020-11-17T19:53:21Z
2020-11-17T19:53:21Z
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cc @jbrockmendel
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CI: fix mypy error (quick fix)
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see https://github.com/pandas-dev/pandas/pull/37913#issuecomment-729155748
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ENH: should we support np.allclose for ExtensionArrays?
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xref https://github.com/pandas-dev/pandas/pull/33435/files#r406534850 I'm looking into picking up #33435. Currently the issue is that `np.allclose` throws when called on an EA: ``` python In [1]: import numpy as np ...: import pandas as pd ...: ...: A = pd.array([1, 2], dtype='Int64') ...: B = pd.array([1, 2], dtype='Int64') ...: np.allclose(A, B) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-1-01ae8e8fc321> in <module> 4 A = pd.array([1, 2], dtype='Int64') 5 B = pd.array([1, 2], dtype='Int64') ----> 6 np.allclose(A, B) <__array_function__ internals> in allclose(*args, **kwargs) ~/anaconda3/envs/pandas-dev/lib/python3.8/site-packages/numpy/core/numeric.py in allclose(a, b, rtol, atol, equal_nan) 2187 2188 """ -> 2189 res = all(isclose(a, b, rtol=rtol, atol=atol, equal_nan=equal_nan)) 2190 return bool(res) 2191 <__array_function__ internals> in isclose(*args, **kwargs) ~/anaconda3/envs/pandas-dev/lib/python3.8/site-packages/numpy/core/numeric.py in isclose(a, b, rtol, atol, equal_nan) 2285 y = array(y, dtype=dt, copy=False, subok=True) 2286 -> 2287 xfin = isfinite(x) 2288 yfin = isfinite(y) 2289 if all(xfin) and all(yfin): TypeError: ufunc 'isfinite' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe'' ``` The error message is about the `isfinite` ufunc not being implemented. The root cause here is that `np.isclose` calls `np.asanyarray` on its inputs and the following triggers the same error: ```python In [14]: a = np.asanyarray(A) ...: b = np.asanyarray(B) ...: np.allclose(a, b) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-14-9c8d10e21030> in <module> 1 a = np.asanyarray(A) 2 b = np.asanyarray(B) ----> 3 np.allclose(a, b) <__array_function__ internals> in allclose(*args, **kwargs) ~/anaconda3/envs/pandas-dev/lib/python3.8/site-packages/numpy/core/numeric.py in allclose(a, b, rtol, atol, equal_nan) 2187 2188 """ -> 2189 res = all(isclose(a, b, rtol=rtol, atol=atol, equal_nan=equal_nan)) 2190 return bool(res) 2191 <__array_function__ internals> in isclose(*args, **kwargs) ~/anaconda3/envs/pandas-dev/lib/python3.8/site-packages/numpy/core/numeric.py in isclose(a, b, rtol, atol, equal_nan) 2285 y = array(y, dtype=dt, copy=False, subok=True) 2286 -> 2287 xfin = isfinite(x) 2288 yfin = isfinite(y) 2289 if all(xfin) and all(yfin): TypeError: ufunc 'isfinite' not supported for the input types, and the inputs could not be safely coerced to any supported types according ``` The issue is that when `np.asanyarray` is called on EA input it returns an `object` dtype: ``` python In [16]: A = pd.array([1, 2], dtype='Int64') ...: np.asanyarray(A) Out[16]: array([1, 2], dtype=object) ``` As far as #33435 is concerned, one solution is to cast to a NumPy array before calling `np.allclose`. Would we, however, want to make `np.allclose` work directly on the integer/floating EAs?
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745,062,473
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37,916
REF: de-duplicate IntervalIndex compatiblity checks
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0
2020-11-17T20:26:58Z
2020-11-18T02:54:00Z
2020-11-18T00:54:19Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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REF: ensure CategoricalIndex._shallow_copy only ever gets Categorical
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0
2020-11-17T21:14:57Z
2020-11-18T02:59:59Z
2020-11-18T00:38:16Z
MEMBER
null
still not as tightly restricted as id like, but a step in the right direction.
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4
2020-11-17T21:29:28Z
2020-11-18T13:32:02Z
2020-11-18T13:31:50Z
CONTRIBUTOR
null
- [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry Related to #37643
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