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https://api.github.com/repos/pandas-dev/pandas/issues/30915
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548,413,386
MDExOlB1bGxSZXF1ZXN0MzYxNzE3OTc3
30,915
ENH/TST: Allow more keywords to ensure_clean
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4
2020-01-11T10:37:17Z
2020-01-15T08:15:58Z
2020-01-15T04:31:50Z
MEMBER
null
These keywords will be passed through to `tempfile` constructor functions. Follow-up: https://github.com/pandas-dev/pandas/pull/30771#discussion_r363684666
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MDExOlB1bGxSZXF1ZXN0MzYxNzE5MDU5
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CLN: F-strings
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1
2020-01-11T10:52:45Z
2020-01-12T09:37:58Z
2020-01-11T23:12:34Z
CONTRIBUTOR
null
- [ ] closes #xxxx - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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MDExOlB1bGxSZXF1ZXN0MzYxNzIwNDk2
30,917
DOC: Fixture docs in pandas/conftest.py
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1
2020-01-11T11:13:05Z
2020-01-11T23:25:48Z
2020-01-11T23:16:41Z
MEMBER
null
xref: https://github.com/pandas-dev/pandas/issues/19159
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30,918
Unexpected behaviour of groupby.transform when using 'fillna'
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1
2020-01-11T12:20:47Z
2020-01-24T19:16:01Z
2020-01-24T19:16:01Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import numpy as np df = pd.DataFrame( { 'A': ['foo', 'foo', 'foo', 'foo', 'bar', 'bar', 'baz'], 'B': [1, 2, np.nan, 3, 3, np.nan, 4], 'C': [np.nan]*7, 'D': [0,1,2,3,4,5,6], 'E': [np.nan] + [datetime.datetime(2020,1,1)]*3 + [datetime.datetime(2020,1,2)]*2 +[datetime.datetime(2020,1,3)], 'F': list('abcdefg'), 'G': list('abc') + [np.nan] + list('efg'), 'id': range(0,7), } ).set_index('id') df.groupby('A').transform('fillna', value=9999) ``` **Output** B|C|D|E|F|G ---|---|---|---|---|--- 9999.0|9999.0|2|2020-01-01 00:00:00|c|c 9999.0|9999.0|2|2020-01-01 00:00:00|c|c 9999.0|9999.0|2|2020-01-01 00:00:00|c|c 9999.0|9999.0|2|2020-01-01 00:00:00|c|c 1.0|9999.0|0|9999|a|a 1.0|9999.0|0|9999|a|a 2.0|9999.0|1|2020-01-01 00:00:00|b|b #### Problem description When using `GroupBy.transform` together with 'fillna' I expected it to work like `GroupBy.transform` together with `lambda x: x.fillna()`. Instead, it seems to also change values that are not NaN. Even worse, it seems to shuffle contents between groups. Is this how it is expected to work? #### Expected Output ```python df.groupby('A').transform(lambda x: x.fillna(9999)) ``` B|C|D|E|F|G ---|---|---|---|---|--- 1.0|9999.0|0|9999|a|a 2.0|9999.0|1|2020-01-01 00:00:00|b|b 9999.0|9999.0|2|2020-01-01 00:00:00|c|c 3.0|9999.0|3|2020-01-01 00:00:00|d|9999 3.0|9999.0|4|2020-01-02 00:00:00|e|e 9999.0|9999.0|5|2020-01-02 00:00:00|f|f 4.0|9999.0|6|2020-01-03 00:00:00|g|g #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.0.final.0 python-bits : 64 OS : Windows OS-release : 10 machine : AMD64 processor : Intel64 Family 6 Model 78 Stepping 3, GenuineIntel byteorder : little LC_ALL : None LANG : de_DE.UTF-8 LOCALE : None.None pandas : 0.25.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 44.0.0.post20200106 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 : 7.11.1 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None s3fs : None scipy : None sqlalchemy : None tables : None xarray : None xlrd : None xlwt : None xlsxwriter : None </details>
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30,919
replace syntax with f-string
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1
2020-01-11T13:57:37Z
2020-01-11T23:11:44Z
2020-01-11T23:11:35Z
CONTRIBUTOR
null
- [x] contributes to #29547 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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548,437,810
MDExOlB1bGxSZXF1ZXN0MzYxNzM1Mjc2
30,920
BUG30787 fixed unexpected behaviour by removing nullable values
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2020-01-11T14:43:31Z
2020-02-12T00:51:03Z
2020-02-12T00:51:02Z
NONE
null
- [done ] closes #30787 Added a simple check not to allow nan values for calculation. Numpy seems to throw error when nan values are passed to searchsorted function.
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548,440,761
MDExOlB1bGxSZXF1ZXN0MzYxNzM3MzQ5
30,921
BUG: loc setitem with missing integer slices does not raise
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2020-01-11T15:10:11Z
2021-03-20T02:36:20Z
2020-02-28T01:50:01Z
MEMBER
null
- [ ] closes #26412 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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548,446,960
MDExOlB1bGxSZXF1ZXN0MzYxNzQxNjAx
30,922
ENH:column-wise DataFrame.fillna and duplicated DataFrame.fillna with Series and Dict
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4
2020-01-11T16:01:47Z
2020-12-08T04:28:34Z
2020-12-08T04:28:33Z
CONTRIBUTOR
null
- [x] closes #4514 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry description: Access "DataFrame" each column, fills up NA values using "Series.fillna" and what i found is if dataframe is duplicated, ".fillna" not guarantee filling NA. So i change them can fill NA. Q. Why access column base not index base? A. problem of Index base f".illna" is not preserve column's dtype. so i use column base. Q. Why assign in column new values not use inplace=True ? A. To avoid chained indexing. If column and index are both duplicated, chained indexing happens, i want to avoid this situation.
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548,449,964
MDExOlB1bGxSZXF1ZXN0MzYxNzQzNjY1
30,923
BUG: Series rolling count ignores min_periods
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21
2020-01-11T16:27:36Z
2020-01-26T04:45:07Z
2020-01-26T00:29:40Z
MEMBER
null
- [x] closes #26996 - [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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MDU6SXNzdWU1NDg0NTA0NDU=
30,924
BUG: Wrong error message is raised when columns=None in df.pivot
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2
2020-01-11T16:31:15Z
2020-01-18T16:23:32Z
2020-01-18T16:23:32Z
MEMBER
null
From docstring, `index` and `values` can be optional in df.pivot, but `columns` is not https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.pivot.html ``` index : string or object, optional Column to use to make new frame’s index. If None, uses existing index. columns : string or object Column to use to make new frame’s columns. ``` However, the error message is confusing now, should raise `columns` is not optional. Code example: ```python >>> df = pd.DataFrame({"foo": ['one', 'one', 'two', 'two'],"bar": ['A', 'A', 'B', 'C'],"baz": [1, 2, 3, 4]}) >>> df.pivot(columns=None) KeyError: 'None of [None] are in the columns' ```
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https://api.github.com/repos/pandas-dev/pandas/issues/30925
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548,450,688
MDExOlB1bGxSZXF1ZXN0MzYxNzQ0MTk4
30,925
BUG: correct wrong error message in df.pivot when columns=None
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11
2020-01-11T16:33:22Z
2020-01-18T16:23:36Z
2020-01-18T16:23:32Z
MEMBER
null
- [x] closes #30924 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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548,471,619
MDExOlB1bGxSZXF1ZXN0MzYxNzU4ODY4
30,926
DOC: Fix whatsnew contributors section
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0
2020-01-11T19:42:32Z
2020-01-13T17:13:38Z
2020-01-13T08:31:17Z
MEMBER
null
Was reading over the whatsnew and noticed that the [1.0 Contributors section ](https://dev.pandas.io/docs/whatsnew/v1.0.0.html#contributors) is empty, and the [0.25.3 Contributors section](https://dev.pandas.io/docs/whatsnew/v0.25.3.html#contributors) looks way to big.
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548,477,203
MDU6SXNzdWU1NDg0NzcyMDM=
30,927
DOC: Whatsnew for 1.0 has deprecations listed in Enhancements section
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2
2020-01-11T20:35:17Z
2020-01-13T13:08:37Z
2020-01-13T13:08:37Z
CONTRIBUTOR
null
In 1.0.0RC0, at https://dev.pandas.io/docs/whatsnew/v1.0.0.html#other-enhancements (i.e., the list of enhancements), we list the following: - The pandas.np submodule is now deprecated. Import numpy directly instead (GH30296) - The pandas.datetime class is now deprecated. Import from datetime instead (GH30296) Shouldn't those two lines appear in the deprecations section https://dev.pandas.io/docs/whatsnew/v1.0.0.html#deprecations instead?
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https://api.github.com/repos/pandas-dev/pandas/issues/30928
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548,479,771
MDExOlB1bGxSZXF1ZXN0MzYxNzY0NTY4
30,928
ENH: Allow multi values for index and columns in df.pivot
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9
2020-01-11T21:01:38Z
2020-02-09T21:57:34Z
2020-02-09T21:57:29Z
MEMBER
null
- [x] closes #21425 - [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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MDExOlB1bGxSZXF1ZXN0MzYxNzY0Njk0
30,929
ENH: Implement convert_dtypes
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47
2020-01-11T21:03:28Z
2020-01-28T20:56:46Z
2020-01-24T03:24:16Z
CONTRIBUTOR
null
- [x] xref #29752 - [x] tests added / passed - pandas/tests/series/test_dtypes.py:test_convert_dtypes - pandas/tests/frame/test_dtypes.py:test_convert_dtypes - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This implements `DataFrame.convert_dtypes()` and `Series.convert_dtypes()`, which will make it much easier to use the new `pd.NA` functionality. Added documentation in the section about the new `pd.NA` functionality. I'm sure there will be comments about how I could have done this in a more/better/different way, and I'm open to resolving them so we get this into 1.0.
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548,484,167
MDExOlB1bGxSZXF1ZXN0MzYxNzY3NjQx
30,930
PERF: RangeIndex.get_loc
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6
2020-01-11T21:47:01Z
2020-01-15T16:40:21Z
2020-01-15T04:22:18Z
MEMBER
null
Small simplification gives a small speedup ``` In [2]: rng = pd.Index(range(10**5)) In [3]: %timeit rng.get_loc(5.0) 6.38 µs ± 381 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each) <-- master 1.15 µs ± 40.9 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) <-- PR In [5]: %timeit rng.get_loc(5) 845 ns ± 5.71 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) <--master In [5]: %timeit rng.get_loc(5) 860 ns ± 16.7 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) <-- PR In [9]: def foo(): ...: try: ...: return rng.get_loc(None) ...: except KeyError: ...: pass ...: In [10]: %timeit foo() 6.72 µs ± 656 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each) <-- master 1.11 µs ± 94 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) <-- PR ```
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MDU6SXNzdWU1NDg0ODY2NzA=
30,931
Attempted install of 1.0.0.0rc0 with conda fails
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10
2020-01-11T22:13:24Z
2020-01-30T01:40:01Z
2020-01-30T01:40:00Z
NONE
null
Installing the release candidate into a new Python 3.7 conda environment throws errors. Do I need to be doing something differently? #### Other notes: - Installing jupyterlab in the same conda environment works fine. - Creating a virtual environment with venv and using pip to install pandas 1.0.0rc0 works fine on the same machine. #### Command ``` conda install -c conda-forge/label/rc pandas==1.0.0rc0 ``` #### Error ``` Collecting package metadata (current_repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source. Collecting package metadata (repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Solving environment: / Found conflicts! Looking for incompatible packages. This can take several minutes. Press CTRL-C to abort. failed UnsatisfiableError: The following specifications were found to be incompatible with each other: Package pip conflicts for: defaults/osx-64::python==3.7.5=h359304d_0 -> pip Package sqlite conflicts for: defaults/osx-64::python==3.7.5=h359304d_0 -> sqlite[version='>=3.30.1,<4.0a0'] Package openssl conflicts for: defaults/osx-64::python==3.7.5=h359304d_0 -> openssl[version='>=1.1.1d,<1.1.2a'] Package pCollecting package metadata (current_repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source. Collecting package metadata (repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Solving environment: / Found conflicts! Looking for incompatible packages. This can take several minutes. Press CTRL-C to abort. failed UnsatisfiableError: The following specifications were found to be incompatible with each other: Package tk conflicts for: python=3.7 -> tk[version='>=8.6.7,<8.7.0a0|>=8.6.8,<8.7.0a0'] Package libcxx conflicts for: pandas==1.0.0rc0 -> libcxx[version='>=9.0.1'] python=3.7 -> libcxx[version='>=4.0.1'] Package openssl conflicts for: python=3.7 -> openssl[version='>=1.0.2o,<1.0.3a|>=1.1.1a,<1.1.2a|>=1.1.1b,<1.1.2a|>=1.1.1c,<1.1.2a|>=1.1.1d,<1.1.2a'] Package pytz conflicts for: pandas==1.0.0rc0 -> pytz[version='>=2017.2'] Package python-dateutil conflicts for: pandas==1.0.0rc0 -> python-dateutil[version='>=2.6.1'] Package readline conflicts for: python=3.7 -> readline[version='>=7.0,<8.0a0'] Package libffi conflicts for: python=3.7 -> libffi[version='>=3.2.1,<4.0a0'] Package pip conflicts for: python=3.7 -> pip Package ncurses conflicts for: python=3.7 -> ncurses[version='>=6.1,<7.0a0'] Package xz conflicts for: python=3.7 -> xz[version='>=5.2.4,<6.0a0'] Package zlib conflicts for: python=3.7 -> zlib[version='>=1.2.11,<1.3.0a0'] Package numpy conflicts for: pandas==1.0.0rc0 -> numpy[version='>=1.14.6,<2.0a0'] Package sqlite conflicts for: python=3.7 -> sqlite[version='>=3.24.0,<4.0a0|>=3.25.2,<4.0a0|>=3.25.3,<4.0a0|>=3.26.0,<4.0a0|>=3.27.2,<4.0a0|>=3.29.0,<4.0a0|>=3.30.1,<4.0a0'] (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Collecting package metadata (current_repodata.json): done -bash: syntax error near unexpected token `(' (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Solving environment: failed with initial frozen solve. Retrying with flexible solve. -bash: Solving: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source. -bash: Solving: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Collecting package metadata (repodata.json): done -bash: syntax error near unexpected token `(' (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Solving environment: failed with initial frozen solve. Retrying with flexible solve. -bash: Solving: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Solving environment: / -bash: Solving: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Found conflicts! Looking for incompatible packages. -bash: Found: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ This can take several minutes. Press CTRL-C to abort. -bash: This: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ failed -bash: failed: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ UnsatisfiableError: The following specifications were found to be incompatible with each other: -bash: UnsatisfiableError:: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package pip conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> pip -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package sqlite conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> sqlite[version='>=3.30.1,<4.0a0'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package openssl conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> openssl[version='>=1.1.1d,<1.1.2a'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package pytz conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ pandas==1.0.0rc0 -> pytz[version='>=2017.2'] -bash: -: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package numpy conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ pandas==1.0.0rc0 -> numpy[version='>=1.14.6,<2.0a0'] -bash: -: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package ncurses conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> ncurses[version='>=6.1,<7.0a0'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package readline conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> readline[version='>=7.0,<8.0a0'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package libcxx conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ pandas==1.0.0rc0 -> libcxx[version='>=9.0.1'] -bash: -: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> libcxx[version='>=4.0.1'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package libffi conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> libffi[version='>=3.2.1,<4.0a0'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package xz conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> xz[version='>=5.2.4,<6.0a0'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package python-dateutil conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ pandas==1.0.0rc0 -> python-dateutil[version='>=2.6.1'] -bash: -: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package tk conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> tk[version='>=8.6.8,<8.7.0a0'] -bash: defaults/osx-64::python==3.7.5=h359304d_0: No such file or directory (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ Package zlib conflicts for: -bash: Package: command not found (myenv) Jeffs-MacBook-Pro:course-info jeffhale$ defaults/osx-64::python==3.7.5=h359304d_0 -> zlib[version='>=1.2.11,<1.3.0a0'] ```
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548,487,814
MDExOlB1bGxSZXF1ZXN0MzYxNzcwMjIx
30,932
CLN: remove unnecessary _date_check_type
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1
2020-01-11T22:23:43Z
2020-01-12T00:06:57Z
2020-01-11T23:53:35Z
MEMBER
null
The check doesn't do anything, and we still a raise `KeyError` anyways
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MDU6SXNzdWU1NDg0OTI2OTU=
30,933
DOC: Replace old string formatting syntax in calling of Appender decorators
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8
2020-01-11T23:13:30Z
2020-02-12T16:01:46Z
2020-02-12T16:01:46Z
CONTRIBUTOR
null
I found calling of `@Appender()` are using `%` to format string. I think it might be better to replace with `.format` based on [PEP 3101](https://www.python.org/dev/peps/pep-3101/) and [a discussion on Stack Overflow](https://stackoverflow.com/questions/5082452/string-formatting-vs-format). #29547 is working on replacing `%` with f-strings. This change would also help to keep the code more consistent in string template. Be more specific, the template using `%` to formate will be something like `%(XXX)s`, but using `.format` and f-strings will be the same as `{XXX}`.
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548,503,447
MDExOlB1bGxSZXF1ZXN0MzYxNzgxMzQw
30,934
CLN: remove no-op from indexing
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2020-01-12T01:14:44Z
2020-01-13T17:26:26Z
2020-01-13T17:22:29Z
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MDExOlB1bGxSZXF1ZXN0MzYxNzgyNjgz
30,935
CLN: remove unused NDFrame methods
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4
2020-01-12T01:31:18Z
2020-01-15T16:41:09Z
2020-01-15T03:00:00Z
MEMBER
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MDU6SXNzdWU1NDg1MTY4MDg=
30,936
ENH: Add engine keyword argument to expanding.apply to leverage Numba
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0
2020-01-12T03:45:01Z
2020-01-16T21:15:38Z
2020-01-16T21:15:38Z
MEMBER
null
In 1.0, we're adding a `engine` keyword argument to `rolling.apply` to run the routine using Cython or Numba. By natural extension, we should allow `expanding.apply` to utilize Numba by adding the same `engine` keyword argument to `expanding.apply`
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30,937
ENH: Add engine keyword to expanding.apply to utilize Numba
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1
2020-01-12T04:36:31Z
2020-01-16T21:15:52Z
2020-01-16T21:15:39Z
MEMBER
null
- [x] closes #30936 - [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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30,938
Getting ValueError: no results with apply(pd.to_numeric(df2.BATTING_Tests_Inns, errors='coerce'))
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1
2020-01-12T07:21:47Z
2020-01-13T06:09:37Z
2020-01-13T06:09:37Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python # Your code here # convert just selected columns to numeric df2[["BATTING_Tests_Mat", "BATTING_Tests_Inns","BATTING_Tests_NO","BATTING_Tests_Runs","BATTING_Tests_HS","BATTING_Tests_Ave","BATTING_Tests_SR"]]= df2[["BATTING_Tests_Mat", "BATTING_Tests_Inns","BATTING_Tests_NO","BATTING_Tests_Runs","BATTING_Tests_HS","BATTING_Tests_Ave","BATTING_Tests_SR"]].apply(pd.to_numeric(df2.BATTING_Tests_Inns, errors='coerce')) ``` #### Getting ValueError: no results with apply(pd.to_numeric(df2.BATTING_Tests_Inns, errors='coerce')) [Getting ValueError: no results with apply(pd.to_numeric(df2.BATTING_Tests_Inns, errors='coerce'))] **Note**: We receive a lot of issues on our GitHub tracker, so it is very possible that your issue has been posted before. Please check first before submitting so that we do not have to handle and close duplicates! **Note**: Many problems can be resolved by simply upgrading `pandas` to the latest version. Before submitting, please check if that solution works for you. If possible, you may want to check if `master` addresses this issue, but that is not necessary. For documentation-related issues, you can check the latest versions of the docs on `master` here: https://pandas-docs.github.io/pandas-docs-travis/ If the issue has not been resolved there, go ahead and file it in the issue tracker. #### Expected Output It should convert to numeric without any error #### Output of ``pd.show_versions()`` '0.25.3' in Google colab [paste the output of ``pd.show_versions()`` here below this line] </details> The dataset is taken from below website. https://data.world/raghav333/cricket-players-espn Full code is in my Github below https://github.com/subhobrata/PandasIssue/blob/master/POC_Dataset.ipynb
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548,541,834
MDExOlB1bGxSZXF1ZXN0MzYxODA5MjMx
30,939
DOC: Fix SS03 docstring error
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1
2020-01-12T09:02:20Z
2020-01-12T10:07:30Z
2020-01-12T10:07:22Z
CONTRIBUTOR
null
Fixes SS03 errors. ``` None:None:SS03:pandas.DatetimeIndex.freqstr:Summary does not end with a period None:None:SS03:pandas.PeriodIndex.freqstr:Summary does not end with a period pandas/pandas/core/window/indexers.py:34:SS03:pandas.api.indexers.BaseIndexer:Summary does not end with a period ``` Related to #27977, #30733 cc @datapythonista - [ ] closes #xxxx - [ ] tests added / passed - [x] passes black pandas - [x] passes git diff upstream/master -u -- "*.py" | flake8 --diff - [ ] whatsnew entry When I ran the script, there are others left, but they might be false positives since I can't find them in the codebase.
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30,940
STY: wrong placed space in strings
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2020-01-12T10:22:39Z
2020-01-12T17:15:57Z
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MEMBER
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- [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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30,941
replace old formatting syntax in shared_docs and Appender
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2020-01-12T13:55:10Z
2020-01-12T14:29:39Z
2020-01-12T14:28:52Z
CONTRIBUTOR
null
- [X] sample of #30933 - [X] tests added / passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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STY: concat strings that should not be seperated
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2020-01-12T15:46:22Z
2020-01-13T14:52:32Z
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BUG: Fix MutliIndexed unstack failures at tuple names
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2020-01-12T16:47:26Z
2020-01-20T23:15:20Z
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MEMBER
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30,944
BUG: pd.NA is not compatible with searchsorted
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9
2020-01-12T18:12:25Z
2020-01-30T12:47:32Z
null
MEMBER
null
#### Code Sample, a copy-pastable example if possible On `master` trying to use `pd.NA` as an input to `searchsorted` fails, and trying to use the `searchsorted` of an array containing `pd.NA` also fails: ```python-traceback In [1]: import numpy as np; import pandas as pd; pd.__version__ Out[1]: '1.0.0rc0+15.g4e2546d89' In [2]: s = pd.Series([-1, 1, 3, 5]) In [3]: arr_pd_na = pd.array([0, 1, 2, pd.NA]) In [4]: s.searchsorted(arr_pd_na) --------------------------------------------------------------------------- TypeError: boolean value of NA is ambiguous In [5]: s.searchsorted(pd.NA) --------------------------------------------------------------------------- TypeError: boolean value of NA is ambiguous In [6]: arr_pd_na.searchsorted(10) --------------------------------------------------------------------------- TypeError: boolean value of NA is ambiguous ``` Note that the `np.nan` equivalent works fine: ```python-traceback In [7]: arr_np_nan = np.array([0, 1, 2, np.nan]) In [8]: s.searchsorted(arr_np_nan) Out[8]: array([1, 1, 2, 4]) In [9]: s.searchsorted(np.nan) Out[9]: 4 In [10]: arr_np_nan.searchsorted(10) Out[10]: 3 ``` This has downstream effects on anything that relies on `searchsorted`, e.g. `pd.cut`, which has the same failing behavior as above for `pd.NA` but succeeds for `np.nan`: ```python-traceback In [11]: pd.cut(arr_pd_na, bins=3) --------------------------------------------------------------------------- TypeError: boolean value of NA is ambiguous In [12]: pd.cut(arr_np_nan, bins=3) Out[12]: [(-0.002, 0.667], (0.667, 1.333], (1.333, 2.0], NaN] Categories (3, interval[float64]): [(-0.002, 0.667] < (0.667, 1.333] < (1.333, 2.0]] ``` #### Problem description `pd.NA` is not compatible with `searchsorted`. #### Expected Output I'd expect the output for the `pd.NA` operations above to match the output of the equivalent `np.nan` operations. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 4e2546d89260fda592332a3988573c26edc7152c python : 3.7.4.final.0 python-bits : 64 OS : Linux OS-release : 4.19.14-041914-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.0rc0+15.g4e2546d89 numpy : 1.17.2 pytz : 2019.2 dateutil : 2.8.0 pip : 19.2.3 setuptools : 41.6.0.post20191030 Cython : 0.29.13 pytest : 5.2.0 hypothesis : 4.36.2 sphinx : 1.8.5 blosc : None feather : None xlsxwriter : 1.2.1 lxml.etree : 4.4.1 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.1 IPython : 7.8.0 pandas_datareader: None bs4 : 4.8.0 bottleneck : 1.2.1 fastparquet : 0.3.2 gcsfs : None lxml.etree : 4.4.1 matplotlib : 3.1.1 numexpr : 2.7.0 odfpy : None openpyxl : 3.0.0 pandas_gbq : None pyarrow : 0.15.0 pytables : None pytest : 5.2.0 s3fs : 0.3.4 scipy : 1.3.1 sqlalchemy : 1.3.8 tables : 3.5.1 tabulate : None xarray : 0.13.0 xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.1 numba : 0.46.0 </details>
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BUG: Use self._constructor_sliced in df._reduce to respect subclassed…
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2
2020-01-12T18:13:58Z
2020-01-24T13:15:42Z
2020-01-24T01:07:44Z
CONTRIBUTOR
null
… types. (GH25596) - [x] closes #25596 - [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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STY: spaces in wrong place (DO NOT MERGE)
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2020-01-12T18:16:55Z
2020-01-13T14:16:51Z
2020-01-13T14:16:19Z
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- [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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1
2020-01-12T20:40:49Z
2020-01-13T20:22:55Z
2020-01-13T19:28:23Z
CONTRIBUTOR
null
This PR types up the method ``NDFrame.resample``. Also renames the func ``resample`` to ``get_resampler`` and import the groupby types used for type checking in frame.py/series.py undir the ``if TYPE_CHECKING:`` clause.
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REF: do all casting _before_ call to DatetimeEngine.get_loc
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2
2020-01-12T21:35:59Z
2020-01-15T16:51:32Z
2020-01-15T03:14:41Z
MEMBER
null
Fixes: incorrectly letting integers or mismatched types through. Removes: maybe_datetimelike_to_i8, along with the recently-removed _to_M8 and he hopefully soon-removed pydt_to_i8 (xred #30854) i think we'll be rid of our kludgy datetime casting functions. Performance neutral: ``` before after ratio [28e909c6] [890204ca] <master> <cln-maybe_datetimelike_to_i8> + 459±3μs 694±300μs 1.51 groupby.GroupByMethods.time_dtype_as_field('int', 'tail', 'transformation') + 1.84±0.2μs 2.38±2μs 1.29 index_cached_properties.IndexCache.time_shape('Float64Index') + 1.09±0.07μs 1.27±0.09μs 1.16 index_cached_properties.IndexCache.time_inferred_type('Float64Index') + 1.43±0.01μs 1.63±0.2μs 1.14 tslibs.timestamp.TimestampConstruction.time_fromordinal + 510±7μs 576±60μs 1.13 ctors.SeriesConstructors.time_series_constructor(<function list_of_str at 0x7fe19dbc09d8>, True, 'int') + 6.75±0.06μs 7.51±0.05μs 1.11 index_object.Indexing.time_get_loc_non_unique_sorted('Int') + 517±8μs 573±70μs 1.11 ctors.SeriesConstructors.time_series_constructor(<function list_of_str at 0x7fe19dbc09d8>, True, 'float') + 4.83±0.06ms 5.33±0.07ms 1.10 index_object.SetOperations.time_operation('int', 'symmetric_difference') + 1.08±0.09μs 1.19±0.07μs 1.10 index_cached_properties.IndexCache.time_is_all_dates('Float64Index') + 1.74±0.02ms 1.92±0.04ms 1.10 inference.ToNumericDowncast.time_downcast('datetime64', 'float') - 25.4±0.8μs 23.1±0.2μs 0.91 indexing.NumericSeriesIndexing.time_getitem_scalar(<class 'pandas.core.indexes.numeric.Float64Index'>, 'unique_monotonic_inc') - 8.31±0.06ms 7.53±0.2ms 0.91 inference.DateInferOps.time_timedelta_plus_datetime - 16.1±0.7ms 14.6±0.3ms 0.91 timedelta.ToTimedelta.time_convert_string_days - 14.0±0.8μs 12.7±0.08μs 0.90 index_object.Indexing.time_get_loc('Float') - 1.94±0.01ms 1.75±0.02ms 0.90 index_object.Indexing.time_get_loc_non_unique('Int') - 12.8±0.04ms 11.5±0.1ms 0.90 multiindex_object.GetLoc.time_med_get_loc_warm - 14.1±0.7μs 12.6±0.1μs 0.89 index_object.Indexing.time_get_loc_sorted('Float') - 12.5±0.04μs 11.1±0.1μs 0.89 multiindex_object.GetLoc.time_string_get_loc - 10.2±0.6μs 9.05±0.05μs 0.89 index_object.Float64IndexMethod.time_get_loc - 12.3±0.1ms 10.8±0.1ms 0.88 multiindex_object.GetLoc.time_small_get_loc_warm - 34.4±0.6μs 30.2±0.6μs 0.88 index_object.Indexing.time_get_loc_non_unique_sorted('Float') - 104±3μs 91.0±2μs 0.88 multiindex_object.GetLoc.time_large_get_loc - 4.90±0.1ms 4.21±0.02ms 0.86 timeseries.ResampleSeries.time_resample('period', '1D', 'ohlc') - 3.78±0.2ms 3.23±0.01ms 0.85 timeseries.ResampleSeries.time_resample('datetime', '5min', 'mean') - 10.4±0.6μs 8.74±0.03μs 0.84 tslibs.timedelta.TimedeltaConstructor.time_from_iso_format - 4.38±0.1ms 3.69±0.02ms 0.84 timeseries.ResampleSeries.time_resample('period', '5min', 'mean') - 3.23±0.5μs 2.24±0.7μs 0.69 index_cached_properties.IndexCache.time_values('TimedeltaIndex') - 641±200μs 443±1μs 0.69 groupby.GroupByMethods.time_dtype_as_field('int', 'head', 'direct') - 2.73±1μs 1.45±0.2μs 0.53 index_cached_properties.IndexCache.time_values('UInt64Index') ```
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548,641,792
MDExOlB1bGxSZXF1ZXN0MzYxODgxNzU0
30,949
DOC: Clarified documentation for convert_dates and use_default_dates params
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1
2020-01-12T23:03:40Z
2020-01-14T23:25:06Z
2020-01-14T23:25:00Z
CONTRIBUTOR
null
This hopefully clarifies the documentation for the behaviour of the convert_dates and keep_default_dates parameters on the read_json function. I recently had to use this function and found the existing docs a bit confusing. I actually created a truth table (below), but this is probably a bit much for the docs. | convert_dates | keep_default_dates | Result | | ------------- | ------------------ | --------------------------- | | True | True | Convert default date fields | | True | False | Don’t convert anything | | False | True | Don’t convert anything | | False | False | Don’t convert anything | | List | True | Convert listed and default date fields | | List | False | Convert just listed date fields | I hope you agree that my changes make the behaviour clearer - but perhaps people will disagree...
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548,652,623
MDExOlB1bGxSZXF1ZXN0MzYxODkwMDg4
30,950
REF: handle searchsorted casting within DatetimeLikeArray
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4
2020-01-13T00:26:47Z
2020-01-20T00:26:29Z
2020-01-18T16:03:17Z
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30,951
CLN: leftover ix checks
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2020-01-13T02:39:44Z
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30,952
CI: numpydev changed double to single quote
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2020-01-13T15:41:19Z
2020-01-13T09:48:38Z
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30,953
Persistent groupby future warning
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2020-01-13T03:48:01Z
2020-03-11T14:18:55Z
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#### Code Sample, a copy-pastable example if possible ```python # Your code here dtf = dtf.groupby('xGUID', sort=True).apply(x_apply) ``` #### Problem description ``` 2020-01-12 21:32:07,672|root|99634|MainProcess|CRITICAL| Exception Information 2020-01-12 21:32:07,672|root|99634|MainProcess|CRITICAL| Type: <class 'FutureWarning'> 2020-01-12 21:32:07,672|root|99634|MainProcess|CRITICAL| Value: Sorting because non-concatenation axis is not aligned. A future version of pandas will change to not sort by default. To accept the future behavior, pass 'sort=False'. File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/x-1.1.1-py3.8.egg/xpack/core/formation_parser.py", line 91, in formation_parser dtf = dtf.groupby('xGUID', sort=True).apply(x_apply) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/groupby/groupby.py", line 737, in apply return self._python_apply_general(f) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/groupby/groupby.py", line 744, in _python_apply_general return self._wrap_applied_output( File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/groupby/generic.py", line 372, in _wrap_applied_output return self._concat_objects(keys, values, not_indexed_same=not_indexed_same) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/groupby/groupby.py", line 937, in _concat_objects result = concat(values, axis=self.axis) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/reshape/concat.py", line 244, in concat op = _Concatenator( File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/reshape/concat.py", line 428, in __init__ self.new_axes = self._get_new_axes() File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/reshape/concat.py", line 497, in _get_new_axes new_axes[i] = self._get_comb_axis(i) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/reshape/concat.py", line 528, in _get_comb_axis return _get_objs_combined_axis( File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/indexes/api.py", line 93, in _get_objs_combined_axis return _get_combined_index(obs_idxes, intersect=intersect, sort=sort) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/indexes/api.py", line 140, in _get_combined_index index = _union_indexes(indexes, sort=sort) File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pandas/core/indexes/api.py", line 215, in _union_indexes warnings.warn(_sort_msg, FutureWarning, stacklevel=8) ``` #### Expected Output No FutureWarning or better warning message. sort=True or False don't remove the warning in this case. #### Output of ``pd.show_versions()`` <details> NSTALLED VERSIONS ------------------ commit : None python : 3.8.1.final.0 python-bits : 64 OS : Darwin OS-release : 19.2.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 0.25.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 41.2.0 Cython : None pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.4.2 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : None pandas_datareader: 0.8.1 bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.4.2 matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.12 tables : None xarray : None xlrd : 1.2.0 xlwt : None xlsxwriter : None None </details>
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548,719,020
MDU6SXNzdWU1NDg3MTkwMjA=
30,954
REF: remove method and tolerance keywords from Index.get_loc
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14
2020-01-13T05:49:48Z
2020-01-13T22:21:27Z
2020-01-13T22:21:27Z
MEMBER
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There is only one non-test place in the code that passes these arguments (Index.asof, and even then it is just "method"). We can put the relevant code directly in `asof` and simplify get_loc quite a bit.
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MDExOlB1bGxSZXF1ZXN0MzYxOTkzODEx
30,955
Backport PR #30926 on branch 1.0.x (DOC: Fix whatsnew contributors section)
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2
2020-01-13T08:31:45Z
2020-01-13T09:48:16Z
2020-01-13T09:48:16Z
NONE
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Backport PR #30926: DOC: Fix whatsnew contributors section
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30,956
BUG: rpow with -1 and pd.NA should return pd.NA
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2
2020-01-13T09:30:48Z
2020-01-13T19:03:26Z
2020-01-13T19:03:26Z
MEMBER
null
In https://github.com/pandas-dev/pandas/pull/30097, we added special cases for 1 and -1 not propagating pd.NA: ``` In [59]: 1 ** pd.NA Out[59]: 1 In [60]: (-1) ** pd.NA Out[60]: -1 ``` But for -1 this should probably be pd.NA as result in the end, see https://mail.python.org/pipermail/pandas-dev/2020-January/001174.html ``` In [58]: (-1) ** np.array([2, 3, 2.5]) /home/joris/miniconda3/envs/dev/bin/ipython:1: RuntimeWarning: invalid value encountered in power #!/home/joris/miniconda3/envs/dev/bin/python Out[58]: array([ 1., -1., nan]) ```
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Backport PR #30952 on branch 1.0.x (CI: numpydev changed double to single quote)
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0
2020-01-13T09:48:48Z
2020-01-13T10:56:00Z
2020-01-13T10:55:59Z
NONE
null
Backport PR #30952: CI: numpydev changed double to single quote
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30,958
pd.Series.sum() returns nan for Int64 with pd.NA
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1
2020-01-13T10:02:21Z
2020-01-18T15:35:40Z
2020-01-18T15:35:40Z
NONE
null
#### Code Sample, a copy-pastable example if possible I'm not sure this is a bug or intended behavior. If intended, I'm glad to be pointed to how API design was discussed and decided. On `1.0.0 rc0`, `pd.Series.sum()`returns `nan` when using `skipna=False` for `'Int64'` with `pd.NA`. ```python >>> pd.Series([1, 2, pd.NA]).sum(skipna=False) <NA> >>> pd.Series([1, 2, pd.NA], dtype='Int64').sum(skipna=False) nan >>> pd.Series([1, 2, np.nan]).sum(skipna=False) nan >>> pd.Series([1, 2, np.nan], dtype='Int64').sum(skipna=False) nan >>> pd.Series([1, 2, None]).sum(skipna=False) nan >>> pd.Series([1, 2, None], dtype='Int64').sum(skipna=False) nan ``` #### Problem description I understand the second and third example returns `nan` for backward compatibility, but the first example of `dtype='Int64'` seems natural to return `pd.NA`. #### Expected Output ```python >>> pd.Series([1, 2, pd.NA], dtype='Int64').sum(skipna=False) <NA> # When breaking backward compatibility is allowed, this is also expected (on and after pandas 2.0.0?) >>> pd.Series([1, 2, np.nan], dtype='Int64').sum(skipna=False) <NA> >>> pd.Series([1, 2, None], dtype='Int64').sum(skipna=False) <NA> ``` #### Output of ``pd.show_versions()`` <details> >>> pd.show_versions() INSTALLED VERSIONS ------------------ commit : None python : 3.7.6.final.0 python-bits : 64 OS : Linux OS-release : 4.9.184-linuxkit machine : x86_64 processor : byteorder : little LC_ALL : None LANG : C.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.0rc0 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 19.3.1 setuptools : 44.0.0 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 : None pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : 3.1.2 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None ```Dockerfile # Dockerfile FROM python:3.7.6 WORKDIR /home RUN pip install pandas==1.0.0rc0 CMD ["/bin/bash"] ``` </details>
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ENH: Add Stata 119 writer
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7
2020-01-13T11:13:48Z
2020-07-28T14:41:36Z
2020-01-14T16:02:32Z
CONTRIBUTOR
null
Add support for writing Stata 119 format files Rename new writer to StataWriterUTF8 since no longer version-specific Improve exception message for unsupported files Fix small issues in to_stata missed in 118 - [X] xref #23573 (already closed) - [X] tests added / passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [X] whatsnew entry
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[BUG] -1 to the power of pd.NA was returning -1
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2020-01-13T11:54:51Z
2020-02-25T17:13:10Z
2020-01-13T19:03:26Z
MEMBER
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- [x] closes #30956 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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30,961
DOC: Move couple of deprecations whatsnew to correct section
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2
2020-01-13T12:18:14Z
2020-01-13T13:08:52Z
2020-01-13T13:08:37Z
CONTRIBUTOR
null
- [x] closes #30927 - [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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MDU6SXNzdWU1NDg5MDUwMTI=
30,962
AttributeError: 'FrameFixed' object has no attribute 'format_type' on 1.0.0rc0
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2
2020-01-13T12:41:15Z
2020-01-22T14:16:46Z
2020-01-22T14:16:46Z
CONTRIBUTOR
null
```python import pandas as pd df = pd.DataFrame({"A": [1, 2]}) df.to_hdf("foo.h5", "foo") with pd.HDFStore("foo.h5") as hdf: for key in hdf.keys(): storer = hdf.get_storer(key) print(type(storer), storer.format_type) ``` On 0.25.3, we have ```python <class 'pandas.io.pytables.FrameFixed'> fixed ``` On 1.0.0rc0 ```pytb Traceback (most recent call last): File "bug.py", line 10, in <module> print(storer.format_type) AttributeError: 'FrameFixed' object has no attribute 'format_type' ``` Didn't see anything about this in the release notes. cc @jbrockmendel (if this was part of your tables cleanup).
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Backport PR #30961 on branch 1.0.x (DOC: Move couple of deprecations whatsnew to correct section)
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0
2020-01-13T13:08:48Z
2020-01-13T14:19:59Z
2020-01-13T14:19:59Z
NONE
null
Backport PR #30961: DOC: Move couple of deprecations whatsnew to correct section
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DOC: Remove tips and tricks section page from the wiki
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14
2020-01-13T13:21:35Z
2021-07-07T17:10:28Z
2021-07-07T17:10:27Z
MEMBER
null
This page: https://github.com/pandas-dev/pandas/wiki/Tips-&-Tricks-for-pandas-dev is mostly outdated, or provides general Python information. Personally, I'd just keep the last section on `PANDAS_TESTING_MODE`. Not sure if the best would be to move it to the CI part of the docs: https://pandas.io/docs/development/contributing.html#testing-with-continuous-integration Or I'd probably just add a comment where that parameter is being used: https://github.com/pandas-dev/pandas/blob/master/.travis.yml#L46 Anything else that people would like to move to the docs from that page?
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DataFrame.set_index when setting a duplicate name now raises
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2020-01-13T13:58:13Z
2021-07-27T04:24:38Z
null
CONTRIBUTOR
null
As part of https://github.com/pandas-dev/pandas/pull/30588, we now raise when trying to create a 2D index. This introduces a behavior change when you call DataFrame.set_index with duplicate data. #### Code Sample, a copy-pastable example if possible ```python In [1]: import pandas as pd In [2]: df = pd.DataFrame([[1, 2, 3]], columns=['a', 'a', 'b']) In [3]: result = df.set_index('a') ``` On pandas 0.25.3, that gives back a DataFrame with a broken Index. Some DataFrame operations will work, but even things like printing the repr will fail ```python # 0.25.3 In [17]: type(result) Out[17]: pandas.core.frame.DataFrame In [18]: result.shape Out[18]: (1, 1) ``` With 1.0.0rc0, that raises ```pytb ~/sandbox/pandas/pandas/core/indexes/numeric.py in __new__(cls, data, dtype, copy, name) 76 if subarr.ndim > 1: 77 # GH#13601, GH#20285, GH#27125 ---> 78 raise ValueError("Index data must be 1-dimensional") 79 80 name = maybe_extract_name(name, data, cls) ValueError: Index data must be 1-dimensional ``` #### Problem description The old output is clearly broken, so I wouldn't consider this a (major) regression. And I don't think people should be doing this in the first place. But I wanted to ask, should `DataFrame.set_index(scalar)` return a MultiIndex when `scalar` is a duplicate label?
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30,966
str accessor functions returns float(NaN) instead of pd.NA
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5
2020-01-13T14:28:56Z
2020-01-14T12:39:48Z
2020-01-14T12:39:48Z
CONTRIBUTOR
null
#### Code Sample ```python import pandas as pd s = pd.Series(['A', 'B', 'C', 'Aaba', 'Baca', np.nan, 'CABA', 'dog', 'cat'], dtype="string") type(s.str.lower()[5]) # returns <class 'float'> ``` #### Problem description the `str` accessor, when working on string-typed series, should return a string-typed series, which should be an array of [`string`, `pd.NA`] only, but it seems that some functions (see list below) can return series that contains `float('nan')`. #### Affected functions As of now, I found these str accessor functions to be affected: `upper` `lower` `replace` also, `extract(expand=False)` on a string type series returns an object type series, which seems unintended as well. #### Expected Output `<class 'pandas._libs.missing.NAType'>` #### Output of ``pd.show_versions()`` <details> ``` INSTALLED VERSIONS ------------------ commit : None python : 3.8.0.final.0 python-bits : 64 OS : Linux OS-release : 5.0.0-38-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_IL LOCALE : en_IL.UTF-8 pandas : 1.0.0rc0 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 18.1 setuptools : 40.8.0 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 : None pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None ``` </details>
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548,980,286
MDU6SXNzdWU1NDg5ODAyODY=
30,967
DataFrame.diff fails with nullable integers
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2020-01-13T14:50:24Z
2020-01-23T19:00:10Z
2020-01-23T19:00:10Z
MEMBER
null
Related to #30889 (I've opened a separate issue as the error is different) #### Code Sample, a copy-pastable example if possible ```python df = pd.DataFrame({"a": [1, 2, 3]}, dtype="Int16") df.diff() ``` #### Problem description This returns ``` IndexError: list assignment index out of range ``` #### Expected Output Something like ``` a 0 pd.NA 1 1 2 1 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : 46c2864c34eee0cd94c8842353331e293b0f2004 python : 3.7.3.final.0 python-bits : 64 OS : Linux OS-release : 4.15.0-74-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 0.25.0+1754.g46c2864c3 numpy : 1.17.3 pytz : 2019.3 dateutil : 2.8.0 pip : 19.3.1 setuptools : 42.0.2.post20191201 Cython : 0.29.14 pytest : 5.3.2 hypothesis : 4.55.4 sphinx : 2.3.0 blosc : None feather : None xlsxwriter : 1.2.6 lxml.etree : 4.4.2 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.9.0 pandas_datareader: None bs4 : 4.8.1 bottleneck : 1.3.1 fastparquet : 0.3.2 gcsfs : None lxml.etree : 4.4.2 matplotlib : 3.1.2 numexpr : 2.7.0 odfpy : None openpyxl : 3.0.1 pandas_gbq : None pyarrow : 0.15.1 pytables : None pytest : 5.3.2 s3fs : 0.4.0 scipy : 1.4.0 sqlalchemy : 1.3.11 tables : 3.6.1 tabulate : 0.8.6 xarray : 0.14.1 xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.6 numba : 0.46.0 </details>
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30,968
Backport PR #30900 on branch 1.0.x (REGR: Fixed hash_key=None for object values)
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0
2020-01-13T15:22:14Z
2020-01-13T16:32:34Z
2020-01-13T16:32:34Z
NONE
null
Backport PR #30900: REGR: Fixed hash_key=None for object values
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str.extract(expand=False) on a string typed series returns an object typed dataframe
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1
2020-01-13T16:04:47Z
2020-01-15T02:56:36Z
2020-01-15T02:56:36Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd df = pd.Series(['a1', 'b2', 'c3'], dtype="string").str.extract(r'([ab])(\d)', expand=False) df.dtypes ``` returns ``` 0 object 1 object dtype: object ``` #### Problem description the str accessor, when working on string-typed series, should return a string-typed dataframe. It seems that `extract(expand=False)` returns an object-typed dataframe see @TomAugspurger in https://github.com/pandas-dev/pandas/issues/30966#issuecomment-573724531 #### Expected Output ``` 0 string 1 string dtype: object ``` #### Output of ``pd.show_versions()`` <details> ``` INSTALLED VERSIONS ------------------ commit : None python : 3.8.0.final.0 python-bits : 64 OS : Linux OS-release : 5.0.0-38-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_IL LOCALE : en_IL.UTF-8 pandas : 1.0.0rc0 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 18.1 setuptools : 40.8.0 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 : None pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : None numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None ``` </details>
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default set to openpyxl
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2020-01-13T16:07:16Z
2020-01-13T16:26:29Z
2020-01-13T16:26:29Z
NONE
null
- [x] closes #28546 - [ ] tests added / passed
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30,971
BUG: reductions for nullable dtypes should return pd.NA for skipna=False
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2
2020-01-13T16:25:27Z
2020-01-19T20:07:37Z
2020-01-18T15:35:40Z
MEMBER
null
Closes https://github.com/pandas-dev/pandas/issues/30958 Just realized that I should probably check boolean dtype as well
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30,972
DOC: whatsnew for 1.1
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1
2020-01-13T16:42:44Z
2020-01-13T19:50:09Z
2020-01-13T19:50:08Z
MEMBER
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MDExOlB1bGxSZXF1ZXN0MzYyMjI0ODI3
30,973
Compat for util.testing import
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2
2020-01-13T17:03:46Z
2020-01-14T04:17:39Z
2020-01-13T20:45:43Z
CONTRIBUTOR
null
Closes #30869
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MDU6SXNzdWU1NDkwNjc4MjM=
30,974
DOC: Fix isort output in CI
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6
2020-01-13T17:12:03Z
2020-02-07T06:12:19Z
2020-02-07T06:12:19Z
MEMBER
null
In the CI, we're using `isort` to check whether the imports in Python files are sorted in an standard way. See https://github.com/pandas-dev/pandas/blob/master/ci/code_checks.sh#L114 The way it is implemented, we expect isort to not print anything in the terminal if everything is ok, and to show errors for the errors encountered. This is mostly true, except that `isort` is also reporting when there are files being skipped. The result of this, is that we highlight in the CI as an error when there are files being skipped. See https://github.com/pandas-dev/pandas/pull/30946/checks?check_run_id=385833706#step:6:36 This can be misleading, and we should try to avoid it. Without adding much complexity to the already complex CI. Not sure if there is an `isort` parameter to simply not report the skipped files. Or if there is an easy way to not highlight the skipped files as an error.
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MDU6SXNzdWU1NDkwNzY4NDk=
30,975
AssertionError from Series.append(DataFrame) with 1.0.0rc0
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1
2020-01-13T17:29:36Z
2020-01-24T03:37:33Z
2020-01-24T03:37:33Z
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible The behavior of the following changed with 1.0.0rc0 ```python >>> import pandas as pd >>> df = pd.DataFrame({"A": [1,2], "B": [3, 4]}) >>> df.A.append(df) ``` On 0.25.3, we have ```python 0 A B 0 1.0 NaN NaN 1 2.0 NaN NaN 0 NaN 1.0 3.0 1 NaN 2.0 4.0 ``` On 1.0.0rc0, we have ```pytb --------------------------------------------------------------------------- AssertionError Traceback (most recent call last) <ipython-input-9-fde662a5b7c4> in <module> ----> 1 df.A.append(df) ~/sandbox/pandas/pandas/core/series.py in append(self, to_append, ignore_index, verify_integrity) 2541 return self._ensure_type( 2542 concat( -> 2543 to_concat, ignore_index=ignore_index, verify_integrity=verify_integrity 2544 ) 2545 ) ~/sandbox/pandas/pandas/core/base.py in _ensure_type(self, obj) 93 Used by type checkers. 94 """ ---> 95 assert isinstance(obj, type(self)), type(obj) 96 return obj 97 AssertionError: <class 'pandas.core.frame.DataFrame'> ``` #### Problem description I don't think the behavior of 0.25.3 is necessarily correct. I would expect either a TypeError from passing a DataFrame to Series.append, or something like ```python In [17]: r Out[17]: A B 0 1 3.0 1 2 4.0 0 1 NaN 1 2 NaN ``` where the name of the Series is aligned with the DataFrame. We clearly document that the elements passed to append should be Series, so IMO we should raise.
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30,976
BUG: ensure_datetime64ns with bigendian array
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10
2020-01-13T17:47:21Z
2020-01-14T16:14:06Z
2020-01-14T12:52:26Z
MEMBER
null
- [x] closes #29684 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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549,097,747
MDExOlB1bGxSZXF1ZXN0MzYyMjUzMDky
30,977
JSON Date Handling 1.0 Regressions
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9
2020-01-13T18:13:51Z
2020-02-06T17:06:46Z
2020-01-18T15:34:13Z
MEMBER
null
closes #30904 Came across these adding parametrized tests in #30903 which this pulls some elements from but which will also ultimately refactor to avoid duplication; just getting this to work as is To be clear the regressions were: 1. ISO dates with datetime.date objects was broken ```python >>> import pandas as pd >>> import datetime >>> data = [datetime.date(year=2020, month=1, day=1), "a"] >>> pd.Series(data).to_json(date_format="iso") TypeError: Expected datetime object ``` 2. `pd.NaT` labels would now yield the sentinel value instead of writing "null" ```python >>> data = [pd.Timestamp("2020-01-01"), pd.NaT] >>> pd.Series(data, index=data).to_json() '{"1577836800000":1577836800000,"-9223372036854":null}' ``` Both have been fixed here
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549,121,483
MDExOlB1bGxSZXF1ZXN0MzYyMjcyNTkw
30,978
BUG: pd.crosstab(s1, s2) handle column index incorrectly when both series have tuple names
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2
2020-01-13T19:02:05Z
2020-01-17T23:57:10Z
2020-01-17T23:57:04Z
MEMBER
null
- [ ] closes #18321 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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549,126,255
MDExOlB1bGxSZXF1ZXN0MzYyMjc2NDk2
30,979
STY: concat strings
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1
2020-01-13T19:12:37Z
2020-01-13T22:05:23Z
2020-01-13T22:01:39Z
MEMBER
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MDExOlB1bGxSZXF1ZXN0MzYyMjgwMDI4
30,980
API: Disallow NaN in StringArray constructor
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2
2020-01-13T19:21:36Z
2020-01-14T12:39:51Z
2020-01-14T12:39:49Z
CONTRIBUTOR
null
Closes https://github.com/pandas-dev/pandas/issues/30966 ~There were a few ways we could have done this. I opted for this way since it still only requires a single pass over the data to validate the values. Other ways like checking for `np.isnan` after checking `is_string_array` would have required a second pass.~ I changed the implementation in subsequent commits. The basic idea is the same, don't allow NaN in the array passed to StringArray, so that we only make a single pass over the data. We do this by changing `StringValidator.is_valid_null` to only allow NA. This required a small change to `PandasArray._from_sequence`, since previously we relied on creating a temporarily invalid StringArray before doing an inplace `__setitem__` to replace NaNs with NA. cc @tsvikas.
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Backport PR #30973 on branch 1.0.x (Compat for util.testing import)
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0
2020-01-13T20:45:53Z
2020-01-13T21:40:40Z
2020-01-13T21:40:39Z
NONE
null
Backport PR #30973: Compat for util.testing import
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PERF: masked ops for reductions (sum)
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22
2020-01-13T20:48:20Z
2020-03-30T07:07:44Z
2020-03-27T16:08:26Z
MEMBER
null
The current `nanops` has quite some complexity that is not needed for the masked arrays. This is a small proof of concept to have separate implementations for our nullable masked arrays, taking the sum case (and still ignoring the additional kwargs). This is also quite a bit faster. On master: ``` In [1]: a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, np.nan]*1000) In [2]: s1 = pd.Series(a, dtype="Int64") In [3]: s2 = pd.Series(a, dtype="float64") In [4]: %timeit s1.sum() 79.1 µs ± 2.39 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each) In [5]: %timeit s2.sum() 79.1 µs ± 1.48 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each) ``` the nullable Int64 basically does the same as the nanops implementation for float. With this PR: ``` In [4]: %timeit s1.sum() 21.5 µs ± 69.9 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each) In [5]: %timeit s2.sum() 79.8 µs ± 1.03 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each) ``` (when using bigger arrays, the speed-up becomes less big in relative factor. Here it's almost 4x with 10k elements, but with 1M it's aound 2x). I think it would be interesting to gradually implement some of the ops specifically for the nullable masked arrays. Personally I think it will be easier to do this in new functions than trying to fit it into the existing nanops function.
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Backport PR #30960 on branch 1.0.x ([BUG] -1 to the power of pd.NA was returning -1)
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0
2020-01-13T21:05:06Z
2020-01-13T21:40:20Z
2020-01-13T21:40:20Z
NONE
null
Backport PR #30960: [BUG] -1 to the power of pd.NA was returning -1
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30,984
DOC: plotting backend is not mentioned in the user guide
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5
2020-01-13T21:44:44Z
2020-02-05T19:09:23Z
2020-02-05T19:09:05Z
MEMBER
null
The new plotting backend option is documented for package authors implementing such a backend: https://dev.pandas.io/docs/development/extending.html#plotting-backends, but we should probably mention this in the user guide (https://dev.pandas.io/docs/user_guide/visualization.html) as well.
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30,985
DOC: remove Table of Contents on the contributing page
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8
2020-01-13T21:50:29Z
2020-03-07T20:03:53Z
2020-03-07T20:03:52Z
MEMBER
null
Currently, the contributing page (https://pandas.pydata.org/pandas-docs/version/1.0.0/development/contributing.html) starts with "Table of Contents". This PR removes that, because 1) we do that on none of the other pages in our docs and 2) with the new theme, there is a page table of contents in the right sidebar as well (although this shows, when landing on the page, only the first level)
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549,205,157
MDU6SXNzdWU1NDkyMDUxNTc=
30,986
Cannot write MultiIndex DataFrame to excel (to_excel) which contains Peroid IntervalIndex
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1
2020-01-13T21:56:01Z
2020-01-24T19:04:55Z
2020-01-24T19:04:55Z
NONE
null
#### Code Sample, a copy-pastable example if possible ```python import pandas as pd import numpy as np midx = pd.MultiIndex.from_arrays( [ np.repeat([1, 2], 2), pd.interval_range(start=pd.Timestamp("2020-01-01"), periods=4, freq="6M"), ] ) df = pd.DataFrame(data=np.random.randint(0, 2, size=(4,)), index=midx) print(df) df.to_excel("tmp.xlsx") ``` #### Problem description I receive a TypeError and the DataFrame does not write to file. ```python ... File "pandas/_libs/tslibs/timestamps.pyx", line 412, in pandas._libs.tslibs.timestamps.Timestamp.__new__ File "pandas/_libs/tslibs/conversion.pyx", line 329, in pandas._libs.tslibs.conversion.convert_to_tsobject TypeError: Cannot convert input [True] of type <class 'bool'> to Timestamp ``` #### Expected Output Expect the DataFrame to write to file. A DataFrame with a Period/IntervalIndex alone can be written to an excel file. Seems to be an issue with MultiIndex. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.4.final.0 python-bits : 64 OS : Linux OS-release : 5.4.7-200.fc31.x86_64 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_GB.UTF-8 LOCALE : en_GB.UTF-8 pandas : 0.25.3 numpy : 1.17.2 pytz : 2019.3 dateutil : 2.8.1 pip : 19.2.3 setuptools : 41.4.0 Cython : 0.29.13 pytest : 5.2.1 hypothesis : 4.54.2 sphinx : 2.2.0 blosc : None feather : None xlsxwriter : 1.2.1 lxml.etree : 4.4.1 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.8.0 pandas_datareader: None bs4 : 4.8.2 bottleneck : 1.3.1 fastparquet : None gcsfs : None lxml.etree : 4.4.1 matplotlib : 3.1.1 numexpr : 2.7.0 odfpy : None openpyxl : 3.0.0 pandas_gbq : None pyarrow : 0.13.0 pytables : None s3fs : None scipy : 1.3.2 sqlalchemy : 1.3.9 tables : 3.6.1 xarray : None xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.1 </details>
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549,205,981
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30,987
FIX: Added small corrections to the test for interpolate limit_area
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1
2020-01-13T21:57:44Z
2020-01-13T22:54:26Z
2020-01-13T22:30:25Z
CONTRIBUTOR
null
- [ ] closes # nothing to close here - [ ] tests added / passed - [ ] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry # not required for this minor fix Some `tm.assert_series_equal()` have been forgotten in https://github.com/pandas-dev/pandas/blob/2baf788819cd1073d9c15444ebcefcfab8e4b9c8/pandas/tests/series/test_missing.py#L1338 There was also a typo in https://github.com/pandas-dev/pandas/blob/2baf788819cd1073d9c15444ebcefcfab8e4b9c8/pandas/tests/series/test_missing.py#L1374 where `direction` has to be `limit_direction`. These things have been fixed in this small PR.
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30,988
BUG: assigment of list with boolean mask scrambles values
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4
2020-01-13T22:05:39Z
2020-01-14T12:02:14Z
2020-01-14T12:01:53Z
MEMBER
null
From [gitter](https://gitter.im/pydata/pandas?at=5e0a26d5d5a7f357e6a84f42) (didn't see it reported in an issue): ``` x = pd.Series([None] * 10) y = [False] * 3 + [True] * 5 + [False] * 2 x[y] = list(range(5)) x ``` gives: ``` 0 None 1 None 2 None 3 3 4 4 5 0 6 1 7 2 8 None 9 None dtype: object ``` For some reason, the assigned values are not in the correct order. With an array, it works fine (but I think we support list as well?): ``` In [4]: x[y] = np.array(list(range(5))) In [5]: x Out[5]: 0 None 1 None 2 None 3 0 4 1 5 2 6 3 7 4 8 None 9 None dtype: object ``` Tested on pandas master, and also on pandas 0.25 it is buggy (eg in pandas 0.18 it worked fine).
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30,989
Update _json.py
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2020-01-13T22:53:55Z
2020-01-14T09:40:54Z
2020-01-14T01:26:38Z
NONE
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Without this change, use of the chunksize argument in read_json causes the following error: `TypeError: initial_value must be str or None, not bytes` - [x] closes #28906 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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30,990
Added clang inline helper
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12
2020-01-13T23:48:43Z
2020-02-16T18:41:27Z
2020-02-16T18:41:24Z
MEMBER
null
gcc on macOS I think executes clang more often than not, and it appears we didn't have a inline helper defined for that. This is ported from `CYTHON_INLINE` which essentially does the same in cythonized files, save the static declaration This might add a bit of build time to macOS (I think partially explains why it's a few minutes faster than the rest) but makes it more similar in performance to the others Running the full benchmark suite to see where this may help
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30,991
STY: concat strings
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3
2020-01-14T00:03:03Z
2020-01-14T00:51:08Z
2020-01-14T00:47:47Z
MEMBER
null
- [ ] closes #xxxx - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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30,992
CLN: de-duplicate _getitem_scalar
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2020-01-14T00:08:57Z
2020-01-14T04:47:50Z
2020-01-14T04:46:11Z
MEMBER
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30,993
BUG: Kurtosis bug?
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8
2020-01-14T00:38:59Z
2020-04-05T00:15:54Z
2020-04-05T00:15:54Z
NONE
null
Why pandas kurtosis and scipy kurtosis result is different? During the test, I also realized that the Pandas kurtosis value was constantly changing according to the starting point. ![1578962134989](https://user-images.githubusercontent.com/3617014/72303684-6633bf00-36b1-11ea-8d50-92d75cd77de7.png)
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30,994
API: DatetimeIndex.get_loc(datetime) should require tzawareness compat?
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6
2020-01-14T04:46:06Z
2020-10-11T19:16:25Z
2020-10-11T19:16:24Z
MEMBER
null
``` dti = pd.date_range("2016-01-01", periods=3) dti2 = dti.tz_localize("UTC").tz_convert("US/Pacific") >>> dti.get_loc(dti2[0]) 0 >>> dti2.get_loc(dti[0]) KeyError: Timestamp('2016-01-01 00:00:00-0800', tz='US/Pacific', freq='D') ser = pd.Series(range(3), index=dti) ser2 = pd.Series(range(3), index=dti2) >>> ser.loc[dti2[1]] 1 >>> ser2.loc[dti[1]] KeyError: Timestamp('2016-01-02 00:00:00-0800', tz='US/Pacific', freq='D') ``` get_loc is effectively an equality check, so I think it should behave like all our other comparisons and require tzawareness-compat. So all of these would raise KeyError. xref #17920, https://github.com/pandas-dev/pandas/pull/30819#issuecomment-572281006
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30,995
BUG: Fix Timestamp constructor changes value on ambiguous DST
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End users rely on error messages for their debugging purposes. Thus, it is important that we make sure that the correct error messages are surfaced depending on the error triggered. The core idea is to convert this: ```python with pytest.raises(klass): # Some code that raise an error ``` To this: ```python with pytest.raises(klass, match=msg): # Some code that raise an error ``` You can read more about ```pytest.raises``` [here](https://docs.pytest.org/en/latest/assert.html#assertions-about-expected-exceptions). --- #### Side note: In case that the raised error message is an external error message (meaning that's not pandas specific), you should use the ```external_error_raised``` instead of ```pytest.raises```. the usage of ```external_error_raised``` is __exactly__ like ```pytest.raises``` the only difference is that you don't pass in the ```match``` argument. For example: ```python import pandas._testing as tm def test_foo(): with tm.external_error_raised(ValueError): raise ValueError("foo") ``` --- #### Keynotes: * Don't forget to link this issue in your PR, paste this ``` https://github.com/pandas-dev/pandas/issues/30999 ``` in your PR. * Please comment what you are planning to work on, so we won't do double the work (no need to mention me, you can just declare what you are planning to work on, just remember to check if something is already taken). * If a file/files that should be marked as "done" (as if there is no more work to do), isn't marked as "done", please comment letting me know about that (And mentioning me by putting ```@MomIsBestFriend``` at the comment's body, so I'll know where to look). --- To generate the full list yourself, you can add: ```yaml - id: unwanted-patterns-bare-pytest-raises name: Check for use of bare use of pytest raises language: python entry: python scripts/validate_unwanted_patterns.py --validation-type="bare_pytest_raises" types: [python] files: ^pandas/tests/ exclude: ^pandas/tests/extension ``` to `.pre-commit-config.yaml` in the `- repo: local` section, and then run ``` pre-commit run unwanted-patterns-bare-pytest-raises --all-files. ``` --- ### The current list is: - [ ] pandas/tests/arrays/boolean/test_arithmetic.py - [ ] pandas/tests/computation/test_compat.py - [ ] pandas/tests/dtypes/test_inference.py - [x] pandas/tests/indexes/multi/test_indexing.py - [x] pandas/tests/indexes/multi/test_setops.py - [x] pandas/tests/indexes/period/test_indexing.py - [x] pandas/tests/indexes/test_common.py - [x] pandas/tests/indexes/test_numpy_compat.py - [ ] pandas/tests/indexing/multiindex/test_partial.py - [ ] pandas/tests/indexing/test_coercion.py - [ ] pandas/tests/io/test_sql.py - [ ] pandas/tests/libs/test_hashtable.py - [x] pandas/tests/reductions/test_reductions.py - [x] pandas/tests/reductions/test_stat_reductions.py - [ ] pandas/tests/resample/test_resampler_grouper.py - [ ] pandas/tests/reshape/test_get_dummies.py - [ ] pandas/tests/reshape/test_union_categoricals.py - [ ] pandas/tests/series/apply/test_series_apply.py - [ ] pandas/tests/series/test_ufunc.py - [ ] pandas/tests/window/moments/test_moments_ewm.py - [ ] pandas/tests/window/test_apply.py --- #### NOTE: The list may change as files are moved/renamed constantly. --- Took pretty much everything from #23922, that was originally opened by @gfyoung.
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31,000
Backport PR #30980 on branch 1.0.x (API: Disallow NaN in StringArray constructor)
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0
2020-01-14T12:40:21Z
2020-01-14T13:24:42Z
2020-01-14T13:24:41Z
NONE
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Backport PR #30980: API: Disallow NaN in StringArray constructor
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549,565,287
MDExOlB1bGxSZXF1ZXN0MzYyNjMyOTg0
31,001
TST: bare pytest raises
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1
2020-01-14T13:24:19Z
2020-01-15T21:24:54Z
2020-01-14T20:18:42Z
MEMBER
null
- [x] ref #30999 - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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31,002
reindex-like has inconsistent behaviour and exceptions if columns don't match
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2020-01-14T13:24:37Z
2021-07-27T04:26:05Z
null
CONTRIBUTOR
null
#### Code Sample, a copy-pastable example if possible ```python df_1 = pd.DataFrame(data=[1,2,3],columns=['a']) df_2 = pd.DataFrame(data=[4,5,6],index=[0.5,1.5,2.5],columns=['b']) df_2.reindex_like(df_1, method="bfill") # backfills as if columns matched df_2.reindex_like(df_1, method="ffill") # all NaN df_2.reindex_like(df_1, method="nearest") # exception ``` #### Problem description It appears different methods of filling treat non matching columns differently. I came across this when trying to reindex two dataframes with one column each, whose names didn't match (as they were essentially irrelevant). #### Workaround before reindex do `df_2.columns = df_1.columns ` #### Expected Output The documentation says: > Its row and column indices are used to define the new indices of this object. Exactly whether this means column name or position is not super clear, but either way the current behaviour is inconsistent. I would prefer if all of them worked like bfill. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.3.final.0 python-bits : 64 OS : Linux OS-release : 5.0.0-37-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 0.25.3 numpy : 1.17.0 pytz : 2018.9 dateutil : 2.8.0 pip : 19.0.3 setuptools : 41.0.1 Cython : 0.29.6 pytest : 4.3.1 hypothesis : None sphinx : 1.8.5 blosc : None feather : None xlsxwriter : 1.1.5 lxml.etree : 4.3.2 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.10 IPython : 7.4.0 pandas_datareader: None bs4 : 4.7.1 bottleneck : 1.2.1 fastparquet : None gcsfs : None lxml.etree : 4.3.2 matplotlib : 3.0.3 numexpr : 2.6.9 odfpy : None openpyxl : 2.6.1 pandas_gbq : None pyarrow : None pytables : None s3fs : None scipy : 1.2.1 sqlalchemy : 1.3.1 tables : 3.5.1 xarray : None xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.1.5 </details>
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MDU6SXNzdWU1NDk1NzA2NDc=
31,003
incorrect docs: pd.NA ** 0 should return 1
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3
2020-01-14T13:33:21Z
2020-01-14T21:33:15Z
2020-01-14T21:33:15Z
CONTRIBUTOR
null
`pd.NA ** 0` returns 1. which is correct, as far as I understand <sup>1</sup> However, the [documents, line 832](https://dev.pandas.io/docs/user_guide/missing_data.html) incorrectly claims that `pd.NA ** 0` returns 0. ---- <sup>1</sup> although one can ask if `NULL**0` should behave like `NAN**0`
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31,004
docs: removed wrong value in `pd.NA ** 0`
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2020-01-14T14:07:18Z
2020-01-14T14:14:45Z
2020-01-14T14:14:45Z
CONTRIBUTOR
null
`pd.NA ** 0` returns 1. The docs fixed to auto-calculate these values. - [x] closes #31003 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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549,598,946
MDExOlB1bGxSZXF1ZXN0MzYyNjYwNDcx
31,005
DOC: removed wrong value of `pd.NA ** 0`
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2020-01-14T14:20:06Z
2020-02-03T10:32:41Z
2020-01-14T20:28:50Z
CONTRIBUTOR
null
- [x] closes #31003 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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549,621,097
MDU6SXNzdWU1NDk2MjEwOTc=
31,006
Using the same column twice within pd.DataFrameGroupBy.agg named arguments
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3
2020-01-14T14:56:33Z
2020-01-14T17:16:39Z
2020-01-14T15:37:32Z
NONE
null
#### Problem description Currently, in .agg, one cannot use the same column more than once, so the following code results in an error: ``` df = pd.DataFrame({ 'group': [1,1,2,2], 'var1': [1,2,3,4] }) df.groupby( 'group' ).agg( sum1 = ('var1', lambda x: x[x > 1].sum()), sum2 = ('var1', lambda x: x[x > 2].sum()) ) ``` I understand that it is possible to create a MultiIndex DataFrame using a dictionary input rather than keyword arguments, but this required complicated renaming of columns and flattening of the resulting MI DataFrame. Is there some fundamental reason that a column cannot be used twice for two different column specs of .agg?
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549,656,682
MDU6SXNzdWU1NDk2NTY2ODI=
31,007
as_index = False not working for applying groupby rolling agg to DataFrame
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2
2020-01-14T15:51:18Z
2021-04-06T11:40:24Z
null
NONE
null
#### Problem description When using a rolling agg function on a groupby object, we cannot ommit the groupby columns from the resulting dataframe's index using `as_index = False`, like we can when applying a non-rolling agg function. #### Code Sample ```python import pandas as pd data = { 'groupby_col': ['A', 'A', 'A', 'A', 'A', 'B', 'B', 'B', 'B', 'B', ], 'agg_col': [1, 1, 0, 1, 0, 0, 0, 0, 1, 0], } df = pd.DataFrame(data) df.groupby(['groupby_col'], as_index=False).rolling(4).agg({'agg_col': 'mean'}) ``` #### Expected Output ```python pd.DataFrame({'agg_col': { 0: np.nan, 1: np.nan, 2: np.nan, 3: 0.75, 4: 0.5, 5: np.nan, 6: np.nan, 7: np.nan, 8: 0.25, 9: 0.25}}) ``` <table border="1" class="dataframe"> <thead> <tr style="text-align: right;"> <th></th> <th>agg_col</th> </tr> </thead> <tbody> <tr> <th>0</th> <td>NaN</td> </tr> <tr> <th>1</th> <td>NaN</td> </tr> <tr> <th>2</th> <td>NaN</td> </tr> <tr> <th>3</th> <td>0.75</td> </tr> <tr> <th>4</th> <td>0.50</td> </tr> <tr> <th>5</th> <td>NaN</td> </tr> <tr> <th>6</th> <td>NaN</td> </tr> <tr> <th>7</th> <td>NaN</td> </tr> <tr> <th>8</th> <td>0.25</td> </tr> <tr> <th>9</th> <td>0.25</td> </tr> </tbody> </table> #### Actual Output ```python pd.DataFrame({'agg_col': { (0, 0): np.nan, (0, 1): np.nan, (0, 2): np.nan, (0, 3): 0.75, (0, 4): 0.5, (1, 5): np.nan, (1, 6): np.nan, (1, 7): np.nan, (1, 8): 0.25, (1, 9): 0.25}}) ``` <table border="1" class="dataframe"> <thead> <tr style="text-align: right;"> <th></th> <th></th> <th>agg_col</th> </tr> </thead> <tbody> <tr> <th rowspan="5" valign="top">0</th> <th>0</th> <td>NaN</td> </tr> <tr> <th>1</th> <td>NaN</td> </tr> <tr> <th>2</th> <td>NaN</td> </tr> <tr> <th>3</th> <td>0.75</td> </tr> <tr> <th>4</th> <td>0.50</td> </tr> <tr> <th rowspan="5" valign="top">1</th> <th>5</th> <td>NaN</td> </tr> <tr> <th>6</th> <td>NaN</td> </tr> <tr> <th>7</th> <td>NaN</td> </tr> <tr> <th>8</th> <td>0.25</td> </tr> <tr> <th>9</th> <td>0.25</td> </tr> </tbody> </table> #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.3.final.0 python-bits : 64 OS : Darwin OS-release : 18.7.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : en_US.UTF-8 pandas : 0.25.1 numpy : 1.17.4 pytz : 2019.3 dateutil : 2.8.0 pip : 19.3.1 setuptools : 40.8.0 Cython : 0.29.14 pytest : 5.3.2 hypothesis : None sphinx : 2.3.0 blosc : None feather : None xlsxwriter : None lxml.etree : None html5lib : 1.0.1 pymysql : None psycopg2 : 2.8.4 (dt dec pq3 ext lo64) jinja2 : 2.10.3 IPython : 7.10.2 pandas_datareader: None bs4 : 4.8.1 bottleneck : None fastparquet : None gcsfs : None lxml.etree : None matplotlib : 3.1.2 numexpr : 2.7.1 odfpy : None openpyxl : None pandas_gbq : None pyarrow : 0.15.1 pytables : None s3fs : None scipy : 1.3.0 sqlalchemy : 1.3.11 tables : 3.6.1 xarray : None xlrd : None xlwt : None xlsxwriter : None </details>
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MDExOlB1bGxSZXF1ZXN0MzYyNzExOTI2
31,008
DOC: Moved PANDAS_TESTING_MODE tip to .travis.yml (#30694)
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2
2020-01-14T15:59:38Z
2020-01-18T16:57:52Z
2020-01-18T16:41:11Z
CONTRIBUTOR
null
Added comments for travis.yml for PANDAS_TESTING_MODE from tips and tricks section of wiki - [X] xref #30964 - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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31,009
Backport PR #30959 on branch 1.0.x (ENH: Add Stata 119 writer)
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0
2020-01-14T16:02:44Z
2020-01-14T16:33:50Z
2020-01-14T16:33:50Z
NONE
null
Backport PR #30959: ENH: Add Stata 119 writer
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31,010
DOC: contributing.rst sphinx link leads to 400 bad request
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3
2020-01-14T16:08:32Z
2020-01-14T20:22:29Z
2020-01-14T20:22:20Z
CONTRIBUTOR
null
When reading through the contributing guidelines (https://dev.pandas.io/docs/development/contributing.html), there are links to the Sphinx documentation and an introduction to reST. _Sphinx documentation_: http://sphinx.pocoo.org/ _Introduction to reST_: http://sphinx.pocoo.org/rest.html However, these links are not working and are leading to 400 bad requests. I propose we replace these links with the following links: _Sphinx documentation_: http://www.sphinx-doc.org/en/master/ _Introduction to reST_: https://www.sphinx-doc.org/en/master/usage/restructuredtext/index.html I think this will be an easy fix, editing the links in the contributing.rst file in the documentation folder.
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31,011
DOC: Changed links to sphinx documentation in contributing.rst file
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1
2020-01-14T18:12:43Z
2020-01-14T20:21:05Z
2020-01-14T20:20:51Z
CONTRIBUTOR
null
GH31010: fixed this issue where inactive links for sphinx documentation were replaced with active links in the contributing documentation.
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31,012
Backport PR #31011 on branch 1.0.x (DOC: Changed links to sphinx documentation in contributing.rst file)
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0
2020-01-14T20:21:03Z
2020-01-14T21:00:49Z
2020-01-14T21:00:48Z
NONE
null
Backport PR #31011: DOC: Changed links to sphinx documentation in contributing.rst file
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31,013
BUG: pivot_table with multi-index columns only fails
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1
2020-01-14T20:34:53Z
2020-01-15T03:19:30Z
2020-01-15T03:19:24Z
MEMBER
null
- [x] closes #17038 - [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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https://github.com/pandas-dev/pandas/pull/31014
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MDExOlB1bGxSZXF1ZXN0MzYyODI3NDIx
31,014
Revert "DOC: removed wrong value of `pd.NA ** 0`"
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2020-01-14T20:36:52Z
2020-01-14T20:39:25Z
2020-01-14T20:39:21Z
CONTRIBUTOR
null
Reverts pandas-dev/pandas#31005 Made to the wrong branch.
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