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Performance regression in timeseries.SortIndex.time_sort_index
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0
2020-05-01T13:29:19Z
2020-06-03T09:04:43Z
2020-06-03T09:04:43Z
CONTRIBUTOR
null
```python import pandas as pd import numpy as np N = 10 ** 5 idx = pd.date_range(start="1/1/2000", periods=N, freq="s") s = pd.Series(np.random.randn(N), index=idx) %timeit s.sort_index() ``` ``` # 1.0.2 108 µs ± 8.27 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each) # master 225 µs ± 8.36 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each) ``` According to https://pandas.pydata.org/speed/pandas/index.html#timeseries.SortIndex.time_sort_index?p-monotonic=True&commits=f683473a156f032a64a1d7edcebde21c42a8702d-085860a49f3a87aa4e24b3115b50b85c4b3c5676, the first slow commit is https://github.com/pandas-dev/pandas/pull/33755, which just bumps Cython in numpydev... So probably not actually that commit.
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Performance regression in timeseries.DatetimeIndex.time_get
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2
2020-05-01T13:35:09Z
2020-07-02T21:05:05Z
2020-07-02T21:05:05Z
CONTRIBUTOR
null
```python import pandas as pd import numpy as np N = 100000 index = pd.date_range(start="2000", periods=N, freq="s", tz="US/Eastern") %timeit index[0] ``` ``` # pandas 1.0.2 12 µs ± 292 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each) # master 25.9 µs ± 935 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each) ``` https://pandas.pydata.org/speed/pandas/index.html#timeseries.DatetimeIndex.time_get?p-index_type=%27tz_aware%27&commits=428791c5e01453ff6979b43d37c39c7315c0aaa2-1e5ff233c559ecb2f14fdb9c8d9537db3a02ce1d points to somewhere in `428791c5..1e5ff233` ``` * 1e5ff233c5 - ENH: allow passing freq=None to DatetimeIndex/TimedeltaIndex (#33635) (6 days ago) <jbrockmendel> * 0907d9ece2 - BUG: DTI/TDI/PI.where accepting incorrectly-typed NaTs (#33715) (6 days ago) <jbrockmendel> * ee1736a325 - REF: use cached inferred_type when calling lib.infer_dtype(index) (#33537) (6 days ago) <jbrockmendel> * 23e91a7f3f - TST: groupby-reindex on DTI (#33638) (6 days ago) <CloseChoice> * cb71376385 - BUG: support skew function for custom BaseIndexer rolling windows (#33745) (6 days ago) <Alex Kirko> * e008a0a7ac - DOC: Remove ambiguity in fill_value documentation (#33788) (6 days ago) <Bharat Raghunathan> * e82c0c69fd - CLN: Pass numpy args as kwargs (#33789) (6 days ago) <Daniel Saxton> * a7741e3ff8 - PERF: op(frame, series) when series is not EA (#33600) (6 days ago) <jbrockmendel> * ad4465edbd - CLN: remove unused PeriodEngine methods (#33796) (6 days ago) <jbrockmendel> * 3c09d22f7f - BUG: arg validation in DTA/TDA/PA.take, DTI/TDI/PI.where (#33685) (6 days ago) <jbrockmendel> * c6a1638bcd - BUG: Series[listlike_of_ints] incorrect on MultiIndex (#33539) (6 days ago) <jbrockmendel> * 17dc6b0959 - REF: implement test_astype (#33734) (6 days ago) <jbrockmendel> * c4ebf21e7e - REF: Implement NDArrayBackedExtensionArray (#33660) (6 days ago) <jbrockmendel> * c60882429e - REF: remove need to override get_indexer_non_unique in DatetimeIndexOpsMixin (#33792) (6 days ago) <jbrockmendel> * 0163b7941f - CLN: avoid getattr(obj, "values", obj) (#33776) (6 days ago) <jbrockmendel> * 8c1df8d1b4 - BUG: Setting DTI/TDI freq affecting other indexes viewing the same data (#33552) (6 days ago) <jbrockmendel> * 77a0f19c53 - ENH: Implement IntegerArray.sum (#33538) (6 days ago) <Daniel Saxton> * f49269f5bf - ENH: Implement StringArray.min / max (#33351) (6 days ago) <Daniel Saxton> * 31875eb3d8 - BUG: MonthOffset.name (#33757) (7 days ago) <jbrockmendel> * 92afd5c2c0 - BUG: freq not retained on apply_index (#33779) (7 days ago) <jbrockmendel> * ea09d504c9 - TST: prepare for freq-checking in tests.io (#33711) (7 days ago) <jbrockmendel> * 2b6b89280b - TST: pd.NA TypeError in drop_duplicates with object dtype (#33751) (7 days ago) <Simon Hawkins> * a585b63394 - TST: more accurate freq attr in `expected`s (#33773) (7 days ago) <jbrockmendel> * f1fe03134d - CLN: simplify DTA.__getitem__ (#33714) (7 days ago) <jbrockmendel> * 68132f3e0a - REGR: disallow mean of period column again (#33758) (7 days ago) <Joris Van den Bossche> * 3c8593d0f3 - REF: simplify try_cast (#33764) (7 days ago) <jbrockmendel> * 70175beb5b - REF: misplaced sort_index tests (#33774) (7 days ago) <jbrockmendel> * 3df51fcc72 - DOC: data_columns can take bool (#33768) (7 days ago) <Kilian Lieret> * 930a7f8373 - TYP/CLN: rogue type comment not caught by code checks (#33763) (7 days ago) <Simon Hawkins> * 1a82659ec6 - TYP: construction (#33725) (7 days ago) <jbrockmendel> ``` (cc @jbrockmendel)
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Performance regression in gil.ParallelDatetimeFields.time_period_to_datetime
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5
2020-05-01T13:47:36Z
2020-07-09T22:08:17Z
2020-07-09T22:08:17Z
CONTRIBUTOR
null
```python import pandas as pd import numpy as np from pandas._testing import test_parallel N = 10 ** 6 dti = pd.date_range("1900-01-01", periods=N, freq="T") period = dti.to_period("D") @test_parallel(num_threads=2) def run(period): period.to_timestamp() %timeit run(period) ``` ``` # 1.0.2 96.8 ms ± 1.27 ms per loop (mean ± std. dev. of 7 runs, 10 loops each) # master 129 ms ± 1.28 ms per loop (mean ± std. dev. of 7 runs, 10 loops each) ``` https://pandas.pydata.org/speed/pandas/index.html#gil.ParallelDatetimeFields.time_period_to_datetime?commits=d106b81ce532bc71ec6cced944ddb751a4b0e5a3-577de1c6b5cda7f5ae0e4832c2bc3f97ca186e9b points to https://github.com/pandas-dev/pandas/compare/d106b81ce532bc71ec6cced944ddb751a4b0e5a3...577de1c6b5cda7f5ae0e4832c2bc3f97ca186e9b, perhaps https://github.com/pandas-dev/pandas/pull/33491 or https://github.com/pandas-dev/pandas/pull/33047 (cc @jbrockmendel)
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Performance regression in replace.ReplaceDict.time_replace_series
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8
2020-05-01T15:11:41Z
2020-07-15T12:27:22Z
2020-07-15T12:27:22Z
CONTRIBUTOR
null
Setup ```python import pandas as pd import numpy as np inplace = False N = 10 ** 5 start_value = 10 ** 5 to_rep = dict(enumerate(np.arange(N) + start_value)) s = pd.Series(np.random.randint(N, size=10 ** 3)) %timeit s.replace(to_rep, inplace=inplace) ``` ``` # 1.0.2 2.48 s ± 53.7 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) # master 5.77 s ± 117 ms per loop (mean ± std. dev. of 7 runs, 1 loop each) ``` https://pandas.pydata.org/speed/pandas/index.html#replace.ReplaceDict.time_replace_series?p-inplace=False&commits=acb525a79fd3496a57b93fcfdb86be3de28a1815-aa8e869d76878f07dff065f947c99b5663342087 points to ``` aa8e869d76 BLD: recursive inclusion of DLLs in package data (#33246) 610568c146 REF: remove replace_list kludge (#33445) df68cceeb3 REF: .dot tests (#33214) 8d299e4ce1 REF: call pandas_dtype up-front in Index.__new__ (#33407) e7cbe6dc1a BUG: df.iloc[:, :1] with EA column (#32959) 31ea45f8a3 BUG: Add test to ensure, that bug will not occur again. #33058 (#33072) f334fcc681 Properly handle missing attributes in query/eval strings (#32408) 12ffb23a72 DOC: Change doc template to fix SA04 errors in docstrings #28792 (#32972) 7f276c8ba1 DOC: Fixed examples in `pandas/core/groupby/` (#33230) 982b4aadef CI: fix lint issue (#33461) 6bc8a49f25 DOC: Fix heading capitalization in doc/source/whatsnew - part2 (#32550) (#33403) 47de449681 API/TST: Call __finalize__ in more places (#33379) 916d1f3786 DOC: Fix EX01 in DataFrame.drop_duplicates (#33283) 4fc8c2515e DOC: Fix heading capitalization in doc/source/whatsnew - part3 (#32550) (#33429) ef9b9387c8 BUG: Fix bug when concatenating Index of strings (#33436) 40fd73ab8f Update citation webpage (#33311) 3cca07c8a5 BUG: Fix replacing in `string` series with NA (pandas-dev#32621) (#32890) a2cdd50427 INT: provide helpers for accessing the values of DataFrame columns (#33252) efa85af76d PERF: improve IntegerArray fast constructor (#33359) 716689a9bf REGR: Fix construction of PeriodIndex from strings (#33304) 4a74463d02 Updated headers for files in doc/source/whatsnew (#33376) 542ef40bb4 Updated headers for files in doc/source/whatsnew (#33378) 12b0d4523a TYP: F used in decorators to _typing (#33456) d72116b0e7 BUG/PLT: Multiple plots with different cmap, colorbars legends use first cmap (#33392) 2a68c12509 BUG: `weights` is not working for multiple columns in df.plot.hist (#33440) b5f6e59cb4 BUG: Fix ValueError when grouping by read-only category (#33410) (#33446) 0c69615ad5 DEP: Bump min version of dateutil to 2.7.3 (#33363) be86b6583f CLN: remove unnecessary Series._convert calls (#32949) 4334482c34 BUG/API: prohibit dtype-changing IntervalArray.__setitem__ (#32782) 6e3537dbab CLN: Static types in `pandas/_lib/lib.pyx` (#33329) 54f9b03cf6 BUG/REF: unstack with EA dtypes (#33356) 496c982b4e REF: reshape.concat operate on arrays, not SingleBlockManagers (#33125) d72dc24e62 CLN: avoid accessing private functions (#33427) a142ad7bb2 BUG: DataFrame.diff(axis=1) with mixed (or EA) dtypes (#32995) 185a654e3d BUG: scalar indexing on 2D DTA/TDA/PA (#33342) 5f2cdf8e1d REF: call _block_shape from EABlock.make_block (#33308) 5d0faa8ca5 BUG: Series.__getitem__ with MultiIndex and leading integer level (#33404) fe42954e08 BUG: Timedelta == ndarray[td64] (#33441) 991f784a72 STY: Using __all__; removed "noqa" comment (#33143) fbae09e11a CLN/TYP: redundant casts and unused ignores (#33453) 78d8af1fe3 Bump cython for asv environment (#33454) ``` perhaps one of based on the commit message. Not sure. * 610568c146 REF: remove replace_list kludge (#33445) * 3cca07c8a5 BUG: Fix replacing in `string` series with NA (pandas-dev#32621) (#32890)
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610,805,370
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33,921
Performance regression in reshape.Cut.time_qcut_timedelta
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3
2020-05-01T15:21:00Z
2020-06-24T22:37:00Z
2020-06-24T22:37:00Z
CONTRIBUTOR
null
Setup ```python import numpy as np import pandas as pd N = 10 ** 5 bins = 1000 timedelta_series = pd.Series( np.random.randint(N, size=N), dtype="timedelta64[ns]" ) %timeit pd.qcut(timedelta_series, bins) ``` ``` # 1.0.2 57.7 ms ± 1.13 ms per loop (mean ± std. dev. of 7 runs, 10 loops each) # master 139 ms ± 2.97 ms per loop (mean ± std. dev. of 7 runs, 10 loops each) ``` https://pandas.pydata.org/speed/pandas/index.html#rolling.Methods.time_rolling?p-constructor=%27Series%27&p-window=10&p-dtype=%27float%27&p-method=%27sum%27&commits=265b8420121a66ed18329c7a90d5381aeda5454f-ad4ad22c6804e6925c4eb82f51b974c03c3036a8 points to https://github.com/pandas-dev/pandas/commit/d04b965f98fa53f22cc41f7e4d081d763d2856a1 (cc @mabelvj)
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610,807,590
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33,922
Unstable time_get_loc benchmark
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0
2020-05-01T15:25:10Z
2020-05-01T15:25:10Z
null
CONTRIBUTOR
null
This benchmark regularly jumps between 200 and 800 ms: https://pandas.pydata.org/speed/pandas/index.html#indexing_engines.NumericEngineIndexing.time_get_loc?p-engine_and_dtype=%28%3Cclass+%27pandas._libs.index.Int16Engine%27%3E%2C+%3Cclass+%27numpy.int16%27%3E%29&p-index_type=%27monotonic_incr%27&commits=d04b965f98fa53f22cc41f7e4d081d763d2856a1 I don't immediately see any issues with it, but haven't looked closely. This issue can be closed when we determine the cause and make the benchmark timings stable.
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Performance regression in Index.union
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5
2020-05-01T15:33:25Z
2020-07-07T20:15:44Z
2020-07-07T20:15:43Z
CONTRIBUTOR
null
Setup ```python import numpy as np import pandas as pd dtype = "datetime" method = "union" N = 10 ** 5 left = pd.date_range("1/1/2000", periods=N, freq="T") right = left[:-1] %timeit left.union(right) ``` ``` # 1.0.2 161 µs ± 7.46 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each) # master 296 µs ± 5.58 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each) ``` https://pandas.pydata.org/speed/pandas/index.html#index_object.SetOperations.time_operation?p-dtype=%27datetime%27&p-method=%27union%27&commits=428791c5e01453ff6979b43d37c39c7315c0aaa2-1e5ff233c559ecb2f14fdb9c8d9537db3a02ce1d points to somewhere in https://github.com/pandas-dev/pandas/compare/428791c5e01453ff6979b43d37c39c7315c0aaa2...1e5ff233c559ecb2f14fdb9c8d9537db3a02ce1d Maybe c60882429e? (cc @jbrockmendel) Haven't looked closely yet.
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33,924
Performance regression in DataFrame[bool_indexer]
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1
2020-05-01T15:45:02Z
2020-06-01T01:42:30Z
2020-06-01T01:42:30Z
CONTRIBUTOR
null
```python import numpy as np import pandas as pd idx_dupe = np.array(range(30)) * 99 df = pd.DataFrame(np.random.randn(10000, 5)) bool_indexer = [True] * 5000 + [False] * 5000 %timeit df[np.array(bool_indexer)] ``` ``` # 1.0.2 2.58 ms ± 108 µs per loop (mean ± std. dev. of 7 runs, 100 loops each) # master 5.47 ms ± 192 µs per loop (mean ± std. dev. of 7 runs, 100 loops each) ``` Note that this only affects the case where the indexer is a *list*. Performance looks fine when an ndarray is passed. https://pandas.pydata.org/speed/pandas/index.html#indexing.DataFrameNumericIndexing.time_bool_indexer?commits=80d37adcc3d9bfbbe17e8aa626d6b5873465ca98-4f89c261f624305fc7bae6c43ae862663994be34 points to somewhere in 80d37adc..4f89c261, which has a bunch of commits.
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30999 fix bare pytest raises
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1
2020-05-01T15:55:15Z
2020-05-01T19:30:35Z
2020-05-01T19:30:31Z
CONTRIBUTOR
null
- [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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33,926
Rethink Inlining?
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2020-05-01T17:15:42Z
2020-05-07T20:56:34Z
null
MEMBER
null
ref https://github.com/pandas-dev/pandas/pull/33886#discussion_r418637034 We use the `inline` keyword pretty liberally in our Cython extensions, with the thought that this probably improves performance. However, running GCC with `-Winline` as a flag produces a ton of warnings that we aren't actually inlining things. Some of these _may_ even do more harm than good (just a hunch, I have no expertise with inline) I've attached warnings from a clean build on master. Not sure all of these are necessarily even just from pandas but may be worth a look for anyone interested [warnings.log.zip](https://github.com/pandas-dev/pandas/files/4565443/warnings.log.zip)
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33,927
TST/REF: Move static methods out of consistency classes
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2
2020-05-01T17:53:19Z
2020-05-02T15:33:19Z
2020-05-02T15:33:14Z
MEMBER
null
In order to keep such tests refactor PR more readable, in this PR, I only move those methods which are actually staticmethods out of huge consistency classes to be independent tests, so no code changes! And after this PR, the big consistency classes are broken down to much smaller. This one will pave the way for replacing some other final fixtures & staticmethods out of classes cc @jreback
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BUG: Local test fail due to change of botocore error handling
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Running ``` pytest pandas/tests/io/parser/test_network.py::TestS3::test_write_s3_csv_fails ``` or ``` pytest pandas/tests/io/parser/test_network.py::TestS3::test_write_s3_parquet_fails ``` will fail ``` FAILED pandas/tests/io/parser/test_network.py::TestS3::test_write_s3_csv_fails - botocore.errorfactory.NoSuchBucket: An error occurred (NoSuchBucket) when calling the PutObject operation: The specified ... FAILED pandas/tests/io/parser/test_network.py::TestS3::test_write_s3_parquet_fails - botocore.errorfactory.NoSuchBucket: An error occurred (NoSuchBucket) when calling the PutObject operation: The specif... ``` With python 3.8 (linux), s3fs 0.4.2 I believe the issue comes from a change of error handling in botocore (used by s3fs). Output of pd.show_versions(): <details> INSTALLED VERSIONS ------------------ commit : 1c88e6aff94cc9183909b7c110f554df42509073 python : 3.8.2.final.0 python-bits : 64 OS : Linux OS-release : 5.4.0-28-generic Version : #32-Ubuntu SMP Wed Apr 22 17:40:10 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.0.dev0+1446.g1c88e6aff.dirty numpy : 1.18.1 pytz : 2020.1 dateutil : 2.8.1 pip : 20.1 setuptools : 46.1.3.post20200325 Cython : 0.29.17 pytest : 5.4.1 hypothesis : 5.10.4 sphinx : 3.0.3 blosc : None feather : None xlsxwriter : 1.2.8 lxml.etree : 4.5.0 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : 4.9.0 bottleneck : 1.3.2 fastparquet : 0.3.3 gcsfs : None matplotlib : 3.2.1 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : 0.17.0 pytables : None pyxlsb : None s3fs : 0.4.2 scipy : 1.4.1 sqlalchemy : 1.3.16 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>
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MDExOlB1bGxSZXF1ZXN0NDEyMjcxODgw
33,929
BUG: Fix small memory access errors in ujson objToJSON.c
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2020-05-01T19:42:04Z
2020-05-02T16:34:48Z
2020-05-02T16:34:44Z
CONTRIBUTOR
null
These were found (and validated fixed) using valgrind. It is likely that none of these changes should create any issues (except maybe on a debug build of python?). But silencing valgrind warnings is good on its own, to ease possible future debugging using valgrind. ---- NOTE: I removed skipping of `test_astype_generic_timestamp_no_frequency`, this is just out of curiosity, I would be very surprised if it made a difference. So this should probably be only merged after undoing the test change. - [ ] closes #xxxx - [ ] tests added / passed - [ ] passes `black pandas` - [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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BUG: Inconsistent name of binary operations between Series and ndarray, list, tuple
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0
2020-05-01T20:15:39Z
2020-10-07T15:00:01Z
2020-10-07T15:00:01Z
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. - [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 ``` import numpy as np import pandas as pd s1 = pd.Series([1, 2, 3, 4, 5], name = "s1") nparray = np.arange(1, len(s1) + 1) s2 = s1 / nparray print("s2.name = ", s2.name) s3 = s1.div(nparray) print("s3.name = ", s3.name) numbers_list = [1.0, 2.0, 3.0, 4.0, 5.0] s4 = s1 / numbers_list print("s4.name = ", s4.name) s5 = s1.div(numbers_list) print("s5.name = ", s5.name) numbers_tuple = (1.0, 2.0, 3.0, 4.0, 5.0) s6 = s1 / numbers_tuple print("s6.name = ", s6.name) s7 = s1.div(numbers_tuple) print("s7.name = ", s7.name) ``` #### Problem description [this should explain **why** the current behaviour is a problem and why the expected output is a better solution] Depending on how binary operation is done, e.g. arithmetic operation or function call resulting `name` is different. - In case of function call it is preserved because `Series` object with no `name` is constructed from ndarray, list or tuple https://github.com/pandas-dev/pandas/blob/master/pandas/core/ops/__init__.py#L476. Call for `get_op_result_name` with arguments of original `Series` object and constructed `Series` object with no name leads to name being set to `None`. - In case of arithmetic operation no `Series` object is created in `_arith_method_SERIES` and call to `get_op_result_name` to arguments of `Series` and non-ABCSeries, non-ABCIndexClass leads to `name` of `Series` operand being preserved. #### Expected Output #### Output of ``pd.show_versions()`` <details> [paste the output of ``pd.show_versions()`` here leaving a blank line after the details tag] INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Windows OS-release : 10 machine : AMD64 processor : Intel64 Family 6 Model 142 Stepping 12, GenuineIntel byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : None.None pandas : 1.0.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.1 setuptools : 41.2.0 Cython : 0.29.17 pytest : 5.3.5 hypothesis : None sphinx : None blosc : None feather : 0.4.0 xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.1 IPython : 7.13.0 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.2.0 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : 0.13.1 pyarrow : 0.16.0 pytables : None pytest : 5.3.5 pyxlsb : None s3fs : 0.4.0 scipy : 1.4.1 sqlalchemy : 1.3.15 tables : None tabulate : None xarray : 0.15.0 xlrd : 1.2.0 xlwt : None xlsxwriter : None numba : None INSTALLED VERSIONS ------------------ commit : 81093ba8214476e979ea55765d7ddb609f729ac9 python : 3.7.5.final.0 python-bits : 64 OS : Linux OS-release : 5.3.0-26-generic Version : #28-Ubuntu SMP Wed Dec 18 05:37:46 UTC 2019 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.0.dev0+1453.g81093ba82 numpy : 1.17.3 pytz : 2019.2 dateutil : 2.7.3 pip : 18.1 setuptools : 41.1.0 Cython : 0.29.17 pytest : 5.3.5 hypothesis : None sphinx : None blosc : None feather : 0.4.0 xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.1 IPython : 7.12.0 pandas_datareader: None bs4 : 4.8.2 bottleneck : None fastparquet : None gcsfs : None matplotlib : 3.1.3 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : 0.13.0 pytables : None pyxlsb : None s3fs : 0.4.2 scipy : 1.4.1 sqlalchemy : 1.3.11 tables : 3.6.1 tabulate : None xarray : 0.15.1 xlrd : 1.2.0 xlwt : None numba : 0.46.0 </details>
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33,931
BUG: hash of Timestamp on fold=1 create a Segfault
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5
2020-05-01T20:33:51Z
2021-04-28T17:36:20Z
null
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. --- #### Code Sample, a copy-pastable example ```python import pandas as pd america_chicago = "dateutil//usr/share/zoneinfo/America/Chicago" transition_1 = pd.Timestamp(year=2013, month=11, day=3, hour=1, minute=0, tz=america_chicago) transition_2 = pd.Timestamp(year=2013, month=11, day=3, hour=1, minute=0, fold=1, tz=america_chicago) print(transition_1, transition_2) print(hash(transition_1)) print(hash(transition_2)) ``` ```bash $ python3 -q -X faulthandler hash_bug.py ``` ```python-traceback 2013-11-03 01:00:00-05:00 2013-11-03 01:00:00-06:00 780959649129526403 Fatal Python error: Segmentation fault Current thread 0x00007f908caf1740 (most recent call first): File "/usr/lib/python3.8/site-packages/dateutil/tz/tz.py", line 1814 in _datetime_to_timestamp File "/usr/lib/python3.8/site-packages/dateutil/tz/tz.py", line 717 in _find_last_transition File "/usr/lib/python3.8/site-packages/dateutil/tz/tz.py", line 809 in _resolve_ambiguous_time File "/usr/lib/python3.8/site-packages/dateutil/tz/tz.py", line 739 in _find_ttinfo File "/usr/lib/python3.8/site-packages/dateutil/tz/tz.py", line 828 in utcoffset File "t.py", line 8 in <module> [1] 2761996 segmentation fault (core dumped) python3 -q -X faulthandler t.py ``` #### Problem description It should return a correct hash value, and it should not Segfault. This create issue when using a manipulating a Timestamp with a dictionary or a set. #### Expected Output I would have expected the same behavior than datetime in Python: ```python import datetime as dt from dateutil.tz import gettz america_chicago = gettz("America/Chicago") transition_1 = dt.datetime(year=2013, month=11, day=3, hour=1, minute=0, tzinfo=america_chicago) transition_2 = dt.datetime(year=2013, month=11, day=3, hour=1, minute=0, fold=1, tzinfo=america_chicago) print(transition_1, transition_2) print(hash(transition_1)) print(hash(transition_2)) ``` ``` 2013-11-03 01:00:00-05:00 2013-11-03 01:00:00-06:00 780959649129526403 780959649129526403 ``` So it seems that this bug is coming from pandas. #### Output of ``pd.show_versions()`` <details> ``` INSTALLED VERSIONS ------------------ commit : 1c88e6aff94cc9183909b7c110f554df42509073 python : 3.8.2.final.0 python-bits : 64 OS : Linux OS-release : 5.5.13-arch2-1 Version : #1 SMP PREEMPT Mon, 30 Mar 2020 20:42:41 +0000 machine : x86_64 processor : byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.0.dev0+1446.g1c88e6aff numpy : 1.18.2 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3 Cython : 0.29.16 pytest : 5.4.1 hypothesis : None sphinx : 3.0.1 blosc : None feather : None xlsxwriter : None lxml.etree : 4.5.0 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : 4.8.2 bottleneck : None fastparquet : None gcsfs : None matplotlib : 3.2.1 numexpr : None odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.16 tables : None tabulate : None xarray : None xlrd : None xlwt : None numba : None ``` </details>
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33,932
TST: tighten xfails in test_strings
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1
2020-05-01T21:16:35Z
2020-05-02T16:21:19Z
2020-05-02T15:29:54Z
MEMBER
null
cc @TomAugspurger
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610,976,952
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33,933
PERF: Datetimelike lookups
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3
2020-05-01T21:26:37Z
2020-05-04T13:26:01Z
2020-05-02T16:27:25Z
MEMBER
null
cc @TomAugspurger this should address at least some of the regressions you posted about this morning.
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33,934
BUG: pytest with cProfile of test_numba segfault
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2
2020-05-01T22:35:07Z
2020-05-02T04:11:43Z
2020-05-02T04:11:42Z
MEMBER
null
``` python3 -m cProfile -o stats2.dat -m pytest pandas/tests/groupby/aggregate/test_numba.py [...] collected 66 items pandas/tests/groupby/aggregate/test_numba.py ...Segmentation fault: 11 ``` cc @mroeschke
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611,086,519
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33,935
TYP: annotations in nanops
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1
2020-05-02T02:04:45Z
2020-05-06T20:39:59Z
2020-05-06T19:24:14Z
MEMBER
null
tightening types a little bit. Some of the other functions in this file have inaccurate return types, saving that for a separate pass
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REF: move bits of offsets to liboffsets, de-privatize
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3
2020-05-02T02:18:07Z
2020-05-02T17:58:49Z
2020-05-02T17:25:32Z
MEMBER
null
xref #32942, #33394
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33,937
PERF: use fastpaths for is_period_dtype checks
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1
2020-05-02T02:45:12Z
2020-05-02T14:57:19Z
2020-05-02T11:05:55Z
MEMBER
null
This gets most of the is_period_dtype and needs_i8_conversion checks. There are a few left in reshape.merge where i need to track down what type of objects we're working with.
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33,938
TST: raise InvalidIndexError with IntervalIndex.get_value and get_loc
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1
2020-05-02T03:13:12Z
2020-05-10T01:54:45Z
2020-05-09T20:22:04Z
CONTRIBUTOR
null
ensure InvalidIndexError is raised when non-scalar is passed as key to get_loc and get_value methods for IntervalIndex - [X] closes #31117 - [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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33,939
TST: add pattern for nearest
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2020-05-02T08:26:10Z
2020-05-06T17:58:24Z
2020-05-06T17:58:20Z
CONTRIBUTOR
null
- [ ] closes #33895 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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33,940
API: how strict should the equals() method be?
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2020-05-02T08:36:29Z
2021-11-01T23:27:42Z
null
MEMBER
null
While adding an `equals()` method to ExtensionArray (https://github.com/pandas-dev/pandas/issues/27081, https://github.com/pandas-dev/pandas/pull/30652), some questions come up about how strict the method should be: 1. Other array-likes are not equivalent, even if they are all equal? 2. But *subclasses* are equivalent, when they are all equal? 3. Objects with different dtype are not equivalent (eg int8 vs int16), even if all values are equal? And it seems that right now, we are somewhat inconsistent with this in pandas regarding being strict on the data type. Series is strict about the dtype, while Index is not: ```python >>> pd.Series([1, 2, 3], dtype="int64").equals(pd.Series([1, 2, 3], dtype="int32")) False >>> pd.Index([1, 2, 3], dtype="int64").equals(pd.Index([1, 2, 3], dtype="int32")) True ``` For Index, this not even gives True for different integer dtypes as above, but also for float/int, object/int (both examples give False for Series): ```python >>> pd.Index([1, 2, 3], dtype="int64").equals(pd.Index([1, 2, 3], dtype="object")) True >>> pd.Index([1, 2, 3], dtype="int64").equals(pd.Index([1, 2, 3], dtype="float64")) True ``` Index and Series *are* consistent when it comes to not being equal with other array-likes: ```python # all those cases return False pd.Series([1, 2, 3]).equals(np.array([1, 2, 3])) pd.Index([1, 2, 3]).equals(np.array([1, 2, 3])) pd.Series([1, 2, 3]).equals(pd.Index([1, 2, 3])) pd.Index([1, 2, 3]).equals(pd.Series([1, 2, 3])) pd.Series([1, 2, 3]).equals([1, 2, 3]) pd.Index([1, 2, 3]).equals([1, 2, 3]) ``` Both Index and Series also seem to allow subclasses: ```python class MySeries(pd.Series): pass >>> pd.Series([1, 2, 3]).equals(MySeries([1, 2, 3])) True ``` So in the end, I think the main discussion point is: should the dtype be exactly the same, or should only the values be equal? For DataFrame, it shares the implementation with Series so follows that behaviour (except that for DataFrame there are some additional rules about how column names need to compare equal).
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33,941
API/BUG: Series.argmin/max with all-NaN data returns -1 ?
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2020-05-02T12:35:43Z
2021-08-07T05:37:40Z
null
MEMBER
null
Ran into this while looking at https://github.com/pandas-dev/pandas/pull/27801. Both numpy and pandas raise an error for empty arrays/Series in `argmin` and `argmax`: ```python >>> pd.Series([], dtype=float).argmin() ... ValueError: attempt to get argmin of an empty sequence >>> np.array([], dtype=float).argmin() ... ValueError: attempt to get argmin of an empty sequence ``` However, when having all NaN data, we see a different behaviour: ```python >>> pd.Series([np.nan, np.nan], dtype=float).argmin() -1 >>> np.array([np.nan, np.nan], dtype=float).argmin() 0 ``` Does somebody have an explanation of *why* this would return -1 ? In principle, in pandas, `argmin` has a `skipna=True` keyword, so for pandas I would expect that an all-NaN Series behaves the same as an empty Series.
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API: argmin/argmax behaviour for nullable dtypes with skipna=False
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2020-05-02T15:35:29Z
2021-08-07T05:38:48Z
null
MEMBER
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Now we are adding ExtensionArray.argmin/argmax (#24382 / #27801), we also need to decide on its behaviour for nullable / masked arrays. For the default of `skipna=True`, I think the behaviour is clear (we skip those values, and calculate the argmin/argmax of the remaining values), but we need to decide on the behaviour in case of `skipna=False` in presence of missing values. I don't think it makes much sense to follow the current behaviour for Series with NaNs: ``` In [25]: pd.Series([1, 2, 3, np.nan]).argmin() Out[25]: 0 In [26]: pd.Series([1, 2, 3, np.nan]).argmin(skipna=False) Out[26]: -1 ``` (the -1 is discussed separately in https://github.com/pandas-dev/pandas/issues/33941 as well) We also can't really compare with numpy, as there NaNs are regarded as the largest values (which follows somewhat from the sorting behaviour with NaNs). For other reductions, the logic is: once there is an NA present, the result is also an NA with `skipna=False` (with the logic here that the with NAs, the min/max is not known, and thus also not the location). So something like: ```python >>> pd.Series([1, 2, 3, pd.NA], dtype="Int64").argmin(skipna=False) <NA> ``` However, this also means that `argmin`/`argmax` return something that is not an integer, and since those methods are typically used to get a value that can be used to index, that might also be annoying. An alternative could also be to raise an error (similar as for empty arrays).
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TST/REF: Fixturize constant functions in ConsistencyBase
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2020-05-02T16:41:45Z
2020-05-10T15:45:59Z
2020-05-10T15:45:53Z
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This PR fixturizes the last constants (`base_functions` and `no_nan_functions`) in ConsistencyBase, and take corresponding tests out of class. After this one, only constants in `Base` class needs to be fixed (if `Base` is also wanted to be cleaned) cc @jreback
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PERF: use fastpath for is_categorical_dtype calls
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2020-05-02T18:48:49Z
2020-05-04T17:01:58Z
2020-05-04T16:55:31Z
MEMBER
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This doesn't get all of them
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CondaMemoryError When Creating Development Environment with 1 GB Memory
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2020-05-02T19:06:43Z
2021-08-07T05:39:39Z
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This is on a rather limited set of hardware (only 1 GB of memory available) but was surprised when building an environment that running a ```sh conda env create -f environment.yml ``` throws the following error: ```sh CondaMemoryError: The conda process ran out of memory. Increase system memory and/or try again. ```
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33,947
BUG: CategoricalIndex.__contains__ incorrect NaTs
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2020-05-02T20:35:34Z
2020-05-05T17:19:15Z
2020-05-05T17:17:55Z
MEMBER
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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33,948
CI: Move Python 3.9 Build to Conda
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0
2020-05-02T23:12:34Z
2020-11-25T10:59:45Z
2020-11-14T02:27:33Z
CONTRIBUTOR
null
Once Python 3.9 is released (Oct 2020) as a follow up from https://github.com/pandas-dev/pandas/pull/33505 we can move the builds to conda and to run on Azure. Note: Use numpy wheels when available current installs from source.
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33,949
WIP: BUG: Setting DataFrame values via iloc aligns when arguments are lists
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1
2020-05-02T23:57:30Z
2020-10-11T13:22:15Z
2020-05-25T21:14:21Z
MEMBER
null
- [x] closes #22046 - [ ] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This PR currently fails two tests on Windows due to int32 vs int64, but I cant' duplicate on my machine. ```` pandas\tests\indexing\test_indexing.py:588 test_astype_assignment df = df_orig.copy() df.iloc[:, 0:2] = df.iloc[:, 0:2].astype(np.int64) expected = DataFrame( [[1, 2, "3", ".4", 5, 6.0, "foo"]], columns=list("ABCDEFG") ) > tm.assert_frame_equal(df, expected) E AssertionError: Attributes of DataFrame.iloc[:, 0] (column name="A") are different E E Attribute "dtype" are different E [left]: int32 E [right]: int64 ```` Within these test, the change made causes the setting in iloc to be done here: https://github.com/pandas-dev/pandas/blob/c6ad13d57c8157cd175a294f06c427f8a239dcea/pandas/core/indexing.py#L1722-L1724 as opposed to the usual path here: https://github.com/pandas-dev/pandas/blob/c6ad13d57c8157cd175a294f06c427f8a239dcea/pandas/core/indexing.py#L1695-L1705 My best guess is that this is a bug in the former path that is being uncovered by this change, but I am not sure how to fix. Any suggestions or help is much appreciated.
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33,950
BUG: pd.NA ignored in DataFrame.to_html(na_rep)
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2020-05-03T02:44:53Z
2021-08-07T05:40:15Z
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. --- #### Code Sample, a copy-pastable example A short example adjusted from the one in issue #29975 (which appeared to be the closest bug to this one, unless I missed something) ```python >>> df = pd.DataFrame({'a': [1, pd.NA, 2]}) >>> df >>> 'zzzz' in df.to_csv(na_rep='zzzz') True >>> 'zzzz' in df.to_html(na_rep='zzzz') False ``` #### Problem description pd.NA seems to be ignored by the `na_rep` in `to_html()`. In the HTML, pd.NA shows up as `<NA>`. The `na_rep` works fine for pd.NA in `to_csv()` and works fine for NaNs in `to_html()`: ```python >>> df = pd.DataFrame({'a': [1, float('nan'), 2]}) >>> 'zzzz' in df.to_csv(na_rep='zzzz') True >>> 'zzzz' in df.to_html(na_rep='zzzz') True ``` #### Expected Output I'd expect pd.NA to be represented by the `na_rep` in the output of `to_html()`. #### Output of ``pd.show_versions()`` <details> commit : None python : 3.7.7.final.0 python-bits : 64 OS : Linux OS-release : 5.3.0-7642-generic machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 Cython : 0.29.15 pytest : 5.4.1 hypothesis : 5.8.3 sphinx : 2.4.4 blosc : None feather : None xlsxwriter : 1.2.8 lxml.etree : 4.5.0 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.1 IPython : 7.13.0 pandas_datareader: None bs4 : 4.8.2 bottleneck : 1.3.2 fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.1.3 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pytest : 5.4.1 pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.15 tables : 3.6.1 tabulate : None xarray : None xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.8 numba : 0.48.0 </details>
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33,951
CLN: remove unnecessary ABC classes
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2020-05-03T17:35:43Z
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33,952
BUG: adding a value not in the Categories does not raise a ValueError on a Series when adding the value to a new index
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2020-05-03T08:47:38Z
2020-05-08T10:51:41Z
2020-05-08T10:51:23Z
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 s = pd.Series(['a' , 'b'], dtype='category') >>> 0 a 1 b dtype: category Categories (2, object): [a, b] # this is expected, cannot assign a value not in the category s.loc[1] = 'c' >>> ValueError: Cannot setitem on a Categorical with a new category, set the categories first # this is NOT expected. not only it assigns a value not the in the category, but it also implicitly # change the dtype s.loc[2] = 'c' >>> 0 a 1 b 2 c dtype: object ``` #### Problem description Assigning a value not in the category to an index already in the Series show a different behavior than when the index is not already in the Series. This looks like an inconsistent behavior that is hard to explain. The expected behavior is that assigning a value not in a category will always raise a ValueError Exception whether the assignement is in an existing index or in a new index. #### Expected Output #### Output of ``pd.show_versions()`` INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Windows OS-release : 10 machine : AMD64 processor : Intel64 Family 6 Model 142 Stepping 12, GenuineIntel byteorder : little LC_ALL : None LANG : None LOCALE : None.None pandas : 1.0.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 Cython : 0.29.15 pytest : None hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.1 IPython : 7.13.0 pandas_datareader: 0.8.1 bs4 : None bottleneck : 1.3.2 fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.1.3 numexpr : 2.7.1 odfpy : None openpyxl : None pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.15 tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : 0.48.0 </details>
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DOC: Update numpy website url
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0
2020-05-03T13:31:39Z
2020-05-26T09:37:20Z
2020-05-05T09:06:18Z
MEMBER
null
When clicking on the `See Also` item of https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.argsort.html We go to the old numpy url (docs.scipy.org), and a warning is shown to the user. We should update the target url of our numpy links. Sphinx builds automatically these links, I guess the url is in `doc/source/conf.py`.
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DOC: update conf.py to use new numpy doc url
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5
2020-05-03T13:50:10Z
2020-05-05T11:30:45Z
2020-05-05T09:06:18Z
CONTRIBUTOR
null
- [X] closes #33953 - [X] tests added / passed - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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BUG: Not properly checking if post_processing function is callable or not in _get_cythonized_result() function in class GroupBy
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6
2020-05-03T16:30:59Z
2020-07-07T20:55:43Z
2020-07-07T20:55:43Z
CONTRIBUTOR
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. #### Problem description While looking at the code, I found this line which I think is a bug. In the current master branch, pandas/core/groupby/groupby.py file, in the _get_cythonized_result() function : ``` if post_processing: if not callable(pre_processing): raise ValueError("'post_processing' must be a callable!") ``` While checking if post_processing is callable or not, we are actually passing pre_processing object instead of post_processing. This looks like a bug. #### Expected Code ``` if post_processing: if not callable(post_processing): raise ValueError("'post_processing' must be a callable!") ```
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BUG: throwing error in interpolate depending on dtype of column names
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. (on 862db6421256, last commit where build works as of 20:42 2020-05-03). --- **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 Out[6]: A B C 0 1.0 2.0 3.0 1 2.0 4.0 6.0 2 3.0 6.0 9.0 3 4.0 NaN NaN 4 NaN 8.0 NaN 5 5.0 10.0 30.0 df.interpolate(method='ffill', axis=1) ``` Throws an error `ValueError: Index column must be numeric or datetime type when using ffill method other than linear. Try setting a numeric or datetime index column before interpolating.` But the following code works: ```python df.columns = [1, 2, 3] df Out[9]: 1 2 3 0 1.0 2.0 3.0 1 2.0 4.0 6.0 2 3.0 6.0 9.0 3 4.0 NaN NaN 4 NaN 8.0 NaN 5 5.0 10.0 30.0 df.interpolate(method='ffill', axis=1) Out[10]: 1 2 3 0 1.0 2.0 3.0 1 2.0 4.0 6.0 2 3.0 6.0 9.0 3 4.0 6.0 9.0 4 4.0 8.0 9.0 5 5.0 10.0 30.0 ``` #### Problem description Throwing an error should not depend on the dtype of column names. #### Expected Output ```python A B C 0 1.0 2.0 3.0 1 2.0 4.0 6.0 2 3.0 6.0 9.0 3 4.0 6.0 9.0 4 4.0 8.0 9.0 5 5.0 10.0 30.0 ``` #### Output of ``pd.show_versions()`` ``` pd.show_versions() INSTALLED VERSIONS ------------------ commit : 862db6421256cb7a00ae3e88a4a6999347b76271 python : 3.8.2.final.0 python-bits : 64 OS : Linux OS-release : 5.3.0-51-generic Version : #44~18.04.2-Ubuntu SMP Thu Apr 23 14:27:18 UTC 2020 machine : x86_64 processor : x86_64 byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.1.0.dev0+1463.g862db6421 numpy : 1.18.1 pytz : 2020.1 dateutil : 2.8.1 pip : 20.1 setuptools : 46.1.3.post20200325 Cython : 0.29.17 pytest : 5.4.1 hypothesis : 5.10.4 sphinx : 3.0.3 blosc : None feather : None xlsxwriter : 1.2.8 lxml.etree : 4.5.0 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : 4.9.0 bottleneck : 1.3.2 fastparquet : 0.3.3 gcsfs : None matplotlib : 3.2.1 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : 0.17.0 pytables : None pyxlsb : None s3fs : 0.4.2 scipy : 1.4.1 sqlalchemy : 1.3.16 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>
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CLN: remove ABCSparseArray
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CLN: remove ABCDateOffset
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fix bfill, ffill and pad when calling with df.interpolate with column…
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… dtype string (#33956) - [x] closes #33956 - [x] closes #12918 - [x] closes #29146 - [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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3
2020-05-03T23:50:55Z
2020-05-06T19:40:33Z
2020-05-04T07:50:42Z
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. From commit 14eda5865 onwards an ImportError is thrown: ```python ImportError: cannot import name 'BusinessMixin' from 'pandas._libs.tslibs.offsets' (/home/tobias/programming/python/pandas_tests/pandas/pandas/_libs/tslibs/offsets.cpython-38-x86_64-linux-gnu.so) ``` #### Code Sample, a copy-pastable example ```python import pandas as pd ``` </details>
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PERF: 30% faster is_period_object checks
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2020-05-04T00:03:10Z
2020-05-04T15:33:44Z
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Doing an appropriate isinstance check occurs all in C-space. ``` In [1]: import pandas as pd In [2]: from pandas._libs.lib import * In [3]: obj = pd.Period(2004, "A") In [4]: %timeit is_scalar(obj) 78.4 ns ± 0.761 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- PR 101 ns ± 1.74 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- master In [5]: %timeit is_period(obj) 54.1 ns ± 0.548 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- PR 80.7 ns ± 1.14 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- master In [6]: %timeit is_period([]) 50.1 ns ± 1.02 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- PR 340 ns ± 26.9 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) # <-- master In [7]: %timeit is_scalar([]) 65.6 ns ± 0.421 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- PR 67.1 ns ± 0.293 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each) # <-- master In [8]: obj2 = object() In [9]: %timeit is_scalar(obj2) 544 ns ± 6.97 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) # <-- PR 782 ns ± 6.3 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each) # <-- master ```
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Add nrows to read json.
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17
2020-05-04T05:19:02Z
2020-06-04T20:45:50Z
2020-06-04T20:44:21Z
CONTRIBUTOR
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- [x] closes #33916 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` Add the nrows to read_json parameter that returns only the required number of json from the line delimited json
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BUG: memory_usage(deep=True) of dtype='string' is wrong
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2020-05-04T06:57:54Z
2020-05-05T14:18:58Z
2020-05-05T14:18:58Z
NONE
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python In [4]: s = pd.Series(['a','b','c'],dtype='object') ...: print(s.memory_usage()) ...: print(s.memory_usage(deep=True)) 152 326 In [5]: s = pd.Series(['a','b','c'],dtype='string') ...: print(s.memory_usage()) ...: print(s.memory_usage(deep=True)) 152 152 ``` #### Problem description memory_usage(deep=True) for new 'string' dtype is not 'deep' size. #### Expected Output In [3]: s = pd.Series(['a','b','c'],dtype='string') ...: print(s.memory_usage()) ...: print(s.memory_usage(deep=True)) 152 326 #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.4.final.0 python-bits : 64 OS : Darwin OS-release : 18.7.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : en_US.UTF-8 pandas : 1.0.3 numpy : 1.17.3 pytz : 2019.3 dateutil : 2.8.0 pip : 20.1 setuptools : 40.8.0 Cython : 0.29.16 pytest : 5.2.1 hypothesis : None sphinx : None blosc : None feather : None xlsxwriter : 1.2.2 lxml.etree : 4.4.2 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.10.3 IPython : 7.8.0 pandas_datareader: None bs4 : 4.9.0 bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.4.2 matplotlib : 3.1.1 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.0 pandas_gbq : None pyarrow : 0.15.0 pytables : None pytest : 5.2.1 pyxlsb : None s3fs : 0.2.2 scipy : 1.3.1 sqlalchemy : None tables : None tabulate : 0.8.5 xarray : None xlrd : 1.2.0 xlwt : None xlsxwriter : 1.2.2 numba : None </details>
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REGR: string indexing on PeriodIndex raises KeyError on master (not yet released)
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3
2020-05-04T10:48:50Z
2020-06-14T16:39:59Z
2020-06-14T16:39:59Z
MEMBER
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python >>> import pandas as pd >>> >>> pd.__version__ '1.1.0.dev0+1466.ga3477c769' >>> >>> index = pd.period_range(start="2000", periods=20, freq="B") >>> series = pd.Series(range(20), index=index) >>> >>> series.index PeriodIndex(['2000-01-03', '2000-01-04', '2000-01-05', '2000-01-06', '2000-01-07', '2000-01-10', '2000-01-11', '2000-01-12', '2000-01-13', '2000-01-14', '2000-01-17', '2000-01-18', '2000-01-19', '2000-01-20', '2000-01-21', '2000-01-24', '2000-01-25', '2000-01-26', '2000-01-27', '2000-01-28'], dtype='period[B]', freq='B') >>> >>> series.loc["2000-01-14"] Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Users\simon\pandas\pandas\core\indexing.py", line 871, in __getitem__ return self._getitem_axis(maybe_callable, axis=axis) File "C:\Users\simon\pandas\pandas\core\indexing.py", line 1102, in _getitem_axis return self._get_label(key, axis=axis) File "C:\Users\simon\pandas\pandas\core\indexing.py", line 1051, in _get_label return self.obj.xs(label, axis=axis) File "C:\Users\simon\pandas\pandas\core\generic.py", line 3512, in xs loc = self.index.get_loc(key) File "C:\Users\simon\pandas\pandas\core\indexes\period.py", line 519, in get_loc raise KeyError(key) KeyError: '2000-01-14' >>> ``` #### Problem description regression in #31172 (i.e. not yet released) 9a211aae9f710db23c9113aea0251e2758904755 is the first bad commit commit 9a211aae9f710db23c9113aea0251e2758904755 Author: jbrockmendel <jbrockmendel@gmail.com> Date: Sat Jan 25 08:07:15 2020 -0800 BUG: inconsistency between PeriodIndex.get_value vs get_loc (#31172) cc @jbrockmendel #### Expected Output ``` >>> import pandas as pd >>> >>> pd.__version__ '1.0.3' >>> >>> index = pd.period_range(start="2000", periods=20, freq="B") >>> series = pd.Series(range(20), index=index) >>> >>> series.index PeriodIndex(['2000-01-03', '2000-01-04', '2000-01-05', '2000-01-06', '2000-01-07', '2000-01-10', '2000-01-11', '2000-01-12', '2000-01-13', '2000-01-14', '2000-01-17', '2000-01-18', '2000-01-19', '2000-01-20', '2000-01-21', '2000-01-24', '2000-01-25', '2000-01-26', '2000-01-27', '2000-01-28'], dtype='period[B]', freq='B') >>> >>> series.loc["2000-01-14"] 9 >>> ``` #### 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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Feature Request: Add Direct Support to Plotly Express as a submodule in pandas.DataFrame.iplot
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2020-05-04T11:18:15Z
2020-05-06T14:17:02Z
2020-05-06T14:17:02Z
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Could support to Plotly Express be directly added within pandas as a iplot submodule?: https://plotly.com/python/plotly-express/ Thanks!
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Feature Request: Create a Global Setting for Enabling numba engine
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6
2020-05-04T11:25:42Z
2020-07-15T12:28:04Z
2020-07-15T12:28:04Z
NONE
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Would it be possible to create a default pandas global setting to enable numba engine whenever possible? In pandas.DataFrame.apply, .transform, etc. Thanks!
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pandas.read_csv outputs two data frames in Jupiter Notebook
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2020-05-04T11:46:38Z
2020-05-04T12:30:35Z
2020-05-04T12:30:34Z
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### My code: First cell: ```python import pandas as pd test = pd.read_csv("dump.csv") ``` Second cell: ```python test ``` Output: <img width="1114" alt="Screenshot 2020-05-04 at 13 42 52" src="https://user-images.githubusercontent.com/10774221/80962334-284bd980-8e0d-11ea-9d3e-456a112770d4.png"> and ```python type(test) ``` Output: <img width="1113" alt="Screenshot 2020-05-04 at 13 43 45" src="https://user-images.githubusercontent.com/10774221/80962402-47e30200-8e0d-11ea-9a56-4bf387b37257.png"> It seems like the command imports two dataframes but only in Jupyter Notebook. I tested it in Spyder and there everything works fine. ### Setup: The file I am reading: [sp500.csv.zip](https://github.com/pandas-dev/pandas/files/4574412/sp500.csv.zip) ```python pd.show_versions() INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Darwin OS-release : 19.4.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : None.UTF-8 pandas : 1.0.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 Cython : None pytest : None hypothesis : None sphinx : 3.0.3 blosc : None feather : None xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.1.3 numexpr : None odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Darwin OS-release : 19.4.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : None.UTF-8 pandas : 1.0.3 numpy : 1.18.1 pytz : 2019.3 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 Cython : None pytest : None hypothesis : None sphinx : 3.0.3 blosc : None feather : None xlsxwriter : None lxml.etree : 4.5.0 html5lib : None pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : None bottleneck : None fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.1.3 numexpr : None odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None ```
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CI: Bump numpydev URL
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19
2020-05-04T13:02:42Z
2020-05-19T11:02:37Z
2020-05-11T21:42:29Z
CONTRIBUTOR
null
NumPy and scipy are uploading their wheels to a new URL.
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611,899,161
MDExOlB1bGxSZXF1ZXN0NDEyOTcwOTgw
33,969
Fix expected dtype in test_reindex_with_same_tz
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1
2020-05-04T14:02:12Z
2020-05-05T14:26:16Z
2020-05-05T14:18:01Z
CONTRIBUTOR
null
Closes https://github.com/pandas-dev/pandas/issues/33845
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33,970
DOC: start 1.0.4
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9
2020-05-04T15:21:33Z
2020-05-05T12:37:49Z
2020-05-05T11:26:17Z
MEMBER
null
NOTE: opened against 1.0.x branch as to not commit to release at this stage. I think could backport a few PRs moving the whatsnews and only after a release remove from 1.1 whatsnew on master. This gives us the chance to easily abandon the release at any time.
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33,971
Supporting arm64, aarch64, and other platforms.
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17
2020-05-04T15:36:30Z
2021-08-07T05:42:41Z
null
CONTRIBUTOR
null
There are some desires / efforts to support other platforms like arm64 / aarch64 (https://github.com/pandas-dev/pandas/pull/30641). I might have missed it, but I don't know that we've had a real discussion on if / how we are going to support those. I'm not against adding support for either of these, but we should do it deliberately. I think that us uploading wheels / conda packages implies some kind of official blessing that we support those platforms, and will fix bugs specific to those platforms when they arise. These platform specific issues are extremely hard for community-maintained open-source projects to manage (we've had enough issues with 32-bit Windows / Linux). Contributors and maintainers don't have access to hardware and are stuck trying to debug things through CI. Let's use this issue to discuss 1. Do we want to support these two platforms? (I think yes to both) 2. What are the requirements for us to add a platform? - Freely available CI infrastructure - NumPy supports it (any other deps? Cython? Arrow at some point?) - Some level of popularity? We drop Python versions based on popularity, but this seems hard to measure for platforms we don't already officially support. 3. We need a person / team who will champion platform-specific issues. We can ping that person or team when CI / packaging issues arise with that platform. I think we can discuss this more on our monthly dev call next week. cc @pandas-dev/pandas-core & @odidev and @ossdev07 in particular.
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Backport PR #33566 on branch 1.0.x (CI: Fix jedi deprecation warning for 0.17.0 on IPython)
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2020-05-04T15:46:22Z
2020-05-04T16:49:24Z
2020-05-04T16:49:24Z
NONE
null
Backport PR #33566: CI: Fix jedi deprecation warning for 0.17.0 on IPython
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Backport PR #33080 on branch 1.0.x (CI troubleshoot azure)
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0
2020-05-04T15:50:43Z
2020-05-04T16:55:22Z
2020-05-04T16:55:21Z
NONE
null
Backport PR #33080: CI troubleshoot azure
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33,974
REF: use is_foo_object checks instead of _typ checks
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2020-05-04T18:53:10Z
2020-05-04T19:56:48Z
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NONE
null
Backport PR #33309: DOC: include Offset.__call__ to autosummary to fix sphinx warning
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Backport PR #31146 on branch 1.0.x (Remove possibly illegal test data)
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2020-05-04T19:57:28Z
2020-05-04T20:59:49Z
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NONE
null
Backport PR #31146: Remove possibly illegal test data
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xref #33717
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1
2020-05-04T20:06:45Z
2020-05-06T14:11:03Z
2020-05-06T06:48:59Z
MEMBER
null
In particular this avoids the "_typ" checks which go through python-space
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612,171,032
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33,979
PERF: make _Tick into a cdef class
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1
2020-05-04T21:11:26Z
2020-05-05T16:57:58Z
2020-05-05T16:45:40Z
MEMBER
null
The actual "PERF" part is that in the follow-up we can cimport `is_tick_object` which will be appreciably faster than the `getattr(other, "_typ", None) == "dateoffset" and hasattr(other, "delta")` checks we now do
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612,202,590
MDU6SXNzdWU2MTIyMDI1OTA=
33,980
BUG: Series.update() raises ValueError if dtype="string"
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0
2020-05-04T22:12:54Z
2020-05-05T16:27:25Z
2020-05-05T16:27:25Z
NONE
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python import pandas as pd a = pd.Series(["a", None, "c"], dtype="string") b = pd.Series([None, "b", None], dtype="string") a.update(b) ``` results in: ```python-traceback Traceback (most recent call last): File "<ipython-input-15-b9da8f25067a>", line 1, in <module> a.update(b) File "C:\tools\anaconda3\envs\Simple\lib\site-packages\pandas\core\series.py", line 2810, in update self._data = self._data.putmask(mask=mask, new=other, inplace=True) File "C:\tools\anaconda3\envs\Simple\lib\site-packages\pandas\core\internals\managers.py", line 564, in putmask return self.apply("putmask", **kwargs) File "C:\tools\anaconda3\envs\Simple\lib\site-packages\pandas\core\internals\managers.py", line 442, in apply applied = getattr(b, f)(**kwargs) File "C:\tools\anaconda3\envs\Simple\lib\site-packages\pandas\core\internals\blocks.py", line 1676, in putmask new_values[mask] = new File "C:\tools\anaconda3\envs\Simple\lib\site-packages\pandas\core\arrays\string_.py", line 248, in __setitem__ super().__setitem__(key, value) File "C:\tools\anaconda3\envs\Simple\lib\site-packages\pandas\core\arrays\numpy_.py", line 252, in __setitem__ self._ndarray[key] = value ValueError: NumPy boolean array indexing assignment cannot assign 3 input values to the 1 output values where the mask is true ``` #### Problem description The example works if I leave off the `dtype="string"` (resulting in the implicit dtype `object`). IMO update should work for all dtypes, not only the "old" ones. `a = pd.Series([1, None, 3], dtype="Int16")` etc. also raises ValueError, while the same with `dtype="float64"`works. It looks as if update doesn't work with the new nullable dtypes (the ones with `pd.NA`). #### Expected Output The expected result is that `a.update(b)` updates `a` without raising an exception, not only for `object` and `float64`, but also for `string` and `Int16` etc.. #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Windows OS-release : 10 machine : AMD64 processor : Intel64 Family 6 ..., GenuineIntel ... pandas : 1.0.3 numpy : 1.18.1 ... </details>
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3
2020-05-04T22:50:05Z
2020-06-13T18:27:39Z
2020-06-13T18:27:38Z
NONE
null
I am using the below code to merger the multiple CSV files in the folder. The code is working fine for smaller dataset but for bigger data. As the total number of rows is 51163632 but as a result, in big_frame I am getting only 20883611 rows. Is there a limit of pandas dataframe to store the values? big_frame = pd.DataFrame() filename= [] num_comments=0 for file in os.listdir(): print(file) if file.endswith('.CSV'): filename.append(file) num_lines = sum(1 for line in open(file, encoding="utf8")) #print(num_lines) num_comments = num_comments + num_lines print(num_comments) try: #df = pd.read_csv(file, error_bad_lines=False, sep=',', header=None, encoding='utf-8') df = pd.read_csv(file, error_bad_lines=False, delimiter=',', header=None, encoding='utf-8') except: continue big_frame = big_frame.append(df, ignore_index=True)
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612,218,491
MDExOlB1bGxSZXF1ZXN0NDEzMjI1ODMw
33,982
BUG: Handling columns from index_col in _is_potential_multi_index
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5
2020-05-04T22:51:16Z
2020-06-26T07:19:51Z
2020-06-04T21:56:55Z
CONTRIBUTOR
null
- [x] closes #33476 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [] whatsnew entry
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33,983
BUG: Use args and kwargs in Rolling.apply
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2020-05-15T20:28:12Z
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- [x] closes #33433 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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2020-05-05T00:07:40Z
2020-05-30T16:30:29Z
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- [x] closes #33980 - [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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2020-05-05T02:16:20Z
2020-05-05T14:33:28Z
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CONTRIBUTOR
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- [ ] closes #33963 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [ ] whatsnew entry
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33,986
QST: Should list-likes with pd.NA have an inferred nullable dtype if possible?
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2020-05-05T02:36:39Z
2020-05-05T08:17:26Z
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MEMBER
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It looks like in each of these cases the dtype is inferred as object, but does it make sense to try to use a nullable extension type when possible? ```python [ins] In [1]: pd.Series([1, 2, pd.NA]).dtype Out[1]: dtype('O') [ins] In [2]: pd.Series([True, False, pd.NA]).dtype Out[2]: dtype('O') [ins] In [3]: pd.Series(["a", "b", pd.NA]).dtype Out[3]: dtype('O') ```
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BUG:Cannot write as xlsx to GCS
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#### Code Sample, a copy-pastable example ```python output_path = f"gs://my_bucket/incidents/prediction/{ds}_incidents_result" [...] export_app.to_parquet(f"{output_path}.parquet") export_app.to_excel(f"{output_path}.xlsx") ``` #### Problem description I want to write the DF as a `.parquet` and a `.xlsx` file to a GCloud Storage bucket. I launch the job in a K8S pod and I finally got the error message : >textPayload: "[Errno 2] No such file or directory: 'gs://my_bucket/incidents/prediction/2020-04-29_incidents_result.xlsx' Next I change the `to_excel` -> `to_csv` and everything works as expected. Do the `to_excel` can handle a path as `gs://...` ? Because it's the only issue I can see with that. #### Output of ``pd.show_versions()`` INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Linux OS-release : 4.14.138+ machine : x86_64 processor : byteorder : little LC_ALL : C.UTF-8 LANG : C.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.3 numpy : 1.18.1 pytz : 2020.1 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 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 : 0.6.1 lxml.etree : None matplotlib : None numexpr : None odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : 0.15.1 pytables : None pytest : None pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : 1.3.0 xlsxwriter : None numba : None
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612,351,285
MDExOlB1bGxSZXF1ZXN0NDEzMzE2NDMz
33,988
Issue33955 Properly checking whether post_processing is callable or not in Class GroupBy
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2020-05-05T05:38:06Z
2020-06-14T17:14:22Z
2020-06-14T17:14:22Z
CONTRIBUTOR
null
- [x ] closes #33955
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612,427,609
MDExOlB1bGxSZXF1ZXN0NDEzMzczNjk5
33,989
DOC: Add plotting examples and fix broken examples
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6
2020-05-05T08:24:00Z
2020-05-06T07:49:55Z
2020-05-06T07:49:46Z
CONTRIBUTOR
null
This PR improves the `pandas.plotting._misc.py` module docs by: 1. Adding example plots where they were missing from docstrings. 2. Fixing examples that were not formatted to render with ``` .. plot:: :context: close-figs ``` 3. Simplifying the syntax of some oddly-written examples. In some cases, I replicated the examples found in the [User Guide](https://pandas.pydata.org/pandas-docs/stable/user_guide/visualization.html#plotting-tools).
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CI: test_unsupported_other fails on pyarrow 0.17
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0
2020-05-05T08:31:25Z
2020-05-05T09:43:56Z
2020-05-05T09:43:36Z
MEMBER
null
xref https://github.com/pandas-dev/pandas/issues/33300#issuecomment-623690451, https://github.com/pandas-dev/pandas/pull/33422#discussion_r406240082
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BUG: Segmentation fault when importing pandas
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4
2020-05-05T08:47:05Z
2020-05-06T19:39:58Z
2020-05-05T13:41:22Z
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 I have just downloaded fresh miniconda (python 3, 64 bit) script. Instalation of miniconda went well. Than I installed pandas: ``` (base) [user@server ~]$ conda install pandas Collecting package metadata (current_repodata.json): done Solving environment: done ## Package Plan ## environment location: /home/user/miniconda3 added / updated specs: - pandas The following packages will be downloaded: package | build ---------------------------|----------------- blas-1.0 | mkl 6 KB certifi-2020.4.5.1 | py37_0 155 KB conda-4.8.3 | py37_0 2.8 MB intel-openmp-2020.0 | 166 756 KB libgfortran-ng-7.3.0 | hdf63c60_0 1006 KB mkl-2020.0 | 166 128.9 MB mkl-service-2.3.0 | py37he904b0f_0 218 KB mkl_fft-1.0.15 | py37ha843d7b_0 154 KB mkl_random-1.1.0 | py37hd6b4f25_0 321 KB numpy-1.18.1 | py37h4f9e942_0 5 KB numpy-base-1.18.1 | py37hde5b4d6_1 4.2 MB openssl-1.1.1g | h7b6447c_0 2.5 MB pandas-1.0.3 | py37h0573a6f_0 8.6 MB python-dateutil-2.8.1 | py_0 224 KB pytz-2020.1 | py_0 184 KB ------------------------------------------------------------ Total: 149.9 MB The following NEW packages will be INSTALLED: blas pkgs/main/linux-64::blas-1.0-mkl intel-openmp pkgs/main/linux-64::intel-openmp-2020.0-166 libgfortran-ng pkgs/main/linux-64::libgfortran-ng-7.3.0-hdf63c60_0 mkl pkgs/main/linux-64::mkl-2020.0-166 mkl-service pkgs/main/linux-64::mkl-service-2.3.0-py37he904b0f_0 mkl_fft pkgs/main/linux-64::mkl_fft-1.0.15-py37ha843d7b_0 mkl_random pkgs/main/linux-64::mkl_random-1.1.0-py37hd6b4f25_0 numpy pkgs/main/linux-64::numpy-1.18.1-py37h4f9e942_0 numpy-base pkgs/main/linux-64::numpy-base-1.18.1-py37hde5b4d6_1 pandas pkgs/main/linux-64::pandas-1.0.3-py37h0573a6f_0 python-dateutil pkgs/main/noarch::python-dateutil-2.8.1-py_0 pytz pkgs/main/noarch::pytz-2020.1-py_0 The following packages will be SUPERSEDED by a higher-priority channel: ca-certificates conda-forge::ca-certificates-2020.4.5~ --> pkgs/main::ca-certificates-2020.1.1-0 certifi conda-forge::certifi-2020.4.5.1-py37h~ --> pkgs/main::certifi-2020.4.5.1-py37_0 conda conda-forge::conda-4.8.3-py37hc8dfbb8~ --> pkgs/main::conda-4.8.3-py37_0 openssl conda-forge::openssl-1.1.1g-h516909a_0 --> pkgs/main::openssl-1.1.1g-h7b6447c_0 Proceed ([y]/n)? y Downloading and Extracting Packages mkl-service-2.3.0 | 218 KB | ######################################################################################################################################################################################## | 100% pytz-2020.1 | 184 KB | ######################################################################################################################################################################################## | 100% mkl_random-1.1.0 | 321 KB | ######################################################################################################################################################################################## | 100% openssl-1.1.1g | 2.5 MB | ######################################################################################################################################################################################## | 100% blas-1.0 | 6 KB | ######################################################################################################################################################################################## | 100% numpy-1.18.1 | 5 KB | ######################################################################################################################################################################################## | 100% mkl_fft-1.0.15 | 154 KB | ######################################################################################################################################################################################## | 100% conda-4.8.3 | 2.8 MB | ######################################################################################################################################################################################## | 100% numpy-base-1.18.1 | 4.2 MB | ######################################################################################################################################################################################## | 100% pandas-1.0.3 | 8.6 MB | ######################################################################################################################################################################################## | 100% certifi-2020.4.5.1 | 155 KB | ######################################################################################################################################################################################## | 100% libgfortran-ng-7.3.0 | 1006 KB | ######################################################################################################################################################################################## | 100% python-dateutil-2.8. | 224 KB | ######################################################################################################################################################################################## | 100% mkl-2020.0 | 128.9 MB | ######################################################################################################################################################################################## | 100% intel-openmp-2020.0 | 756 KB | ######################################################################################################################################################################################## | 100% Preparing transaction: done Verifying transaction: done Executing transaction: done (base) [user@server ~]$ ``` Now if I try to import pandas I get the Segmentation Fault error. ```(base) [user@server ~]$ python Python 3.7.6 (default, Jan 8 2020, 19:59:22) [GCC 7.3.0] :: Anaconda, Inc. on linux Type "help", "copyright", "credits" or "license" for more information. >>> import pandas as pd Segmentation fault (base) [user@server ~]$ ``` uname -a shows: ``` (base) [user@server ~]$ uname -a Linux server 3.10.0-327.10.1.el7.x86_64 #1 SMP Sat Jan 23 04:54:55 EST 2016 x86_64 x86_64 x86_64 GNU/Linux ``` #### Problem description I cannot import pandas.
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BUG: Timedelta resolution is different depending on how the argument is passed
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2020-05-05T08:54:05Z
2020-06-05T18:51:13Z
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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 (1.0.3). - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python >>> import pandas as pd >>> pd.Timedelta(1 / 128, "seconds").resolution_string 'N' >>> pd.Timedelta(seconds=1 / 128).resolution_string 'U' ``` #### Problem description The resolution of `Timedelta` differs when created with `value` and `unit`, versus with keyword arguments. When tested with seconds as units, the former will round to nanoseconds, while the latter rounds to microseconds. #### Expected Output They should both have the same resolution, nanoseconds making the most sense to me: ```python >>> pd.Timedelta(seconds=1 / 128).resolution_string 'N' ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.8.2.final.0 python-bits : 64 OS : Darwin OS-release : 19.4.0 machine : x86_64 processor : i386 byteorder : little LC_ALL : None LANG : None LOCALE : None.UTF-8 pandas : 1.0.3 numpy : 1.18.4 pytz : 2020.1 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 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 pyxlsb : None s3fs : None scipy : None sqlalchemy : None tables : None tabulate : None xarray : None xlrd : None xlwt : None xlsxwriter : None numba : None </details>
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Backport PR #33241 on branch 1.0.x (tostring->tobytes)
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Backport PR #33241: tostring->tobytes
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xref #33687
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2020-05-05T10:49:44Z
2020-05-05T11:27:41Z
2020-05-05T11:27:29Z
MEMBER
null
xref #33246
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Backport PR #33954 on branch 1.0.x (DOC: update conf.py to use new numpy doc url)
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0
2020-05-05T11:30:04Z
2020-05-05T12:27:15Z
2020-05-05T12:27:15Z
NONE
null
Backport PR #33954: DOC: update conf.py to use new numpy doc url
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BUG:
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8
2020-05-05T12:15:50Z
2020-07-07T17:52:48Z
2020-05-19T21:14:42Z
NONE
null
- [O ] I have checked that this issue has not already been reported. - [O ] I have confirmed this bug exists on the latest version of pandas. - [O ] (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 import pandas ``` #### Problem description I cannot import pandas because of the Attribute error. AttributeError: partially initialized module 'pandas' has no attribute 'plotting' (most likely due to a circular import) #### Expected Output No error. #### Output of ``pd.show_versions()`` Couldn't do it because it could not be imported. O a, <details> I didn't get the error when I installed version 1.0.1. Below is the error message. import pandas File "C:\Users\user\app\venv\lib\site-packages\pandas\__init__.py", line 55, in <module> from pandas.core.api import ( File "C:\Users\user\app\venv\lib\site-packages\pandas\core\api.py", line 29, in <module> from pandas.core.groupby import Grouper, NamedAgg File "C:\Users\user\app\venv\lib\site-packages\pandas\core\groupby\__init__.py", line 1, in <module> from pandas.core.groupby.generic import DataFrameGroupBy, NamedAgg, SeriesGroupBy File "C:\Users\user\app\venv\lib\site-packages\pandas\core\groupby\generic.py", line 60, in <module> from pandas.core.frame import DataFrame File "C:\Users\user\app\venv\lib\site-packages\pandas\core\frame.py", line 124, in <module> from pandas.core.series import Series File "C:\Users\user\app\venv\lib\site-packages\pandas\core\series.py", line 122, in <module> class Series(base.IndexOpsMixin, generic.NDFrame): File "C:\Users\user\app\venv\lib\site-packages\pandas\core\series.py", line 4562, in Series plot = CachedAccessor("plot", pandas.plotting.PlotAccessor) AttributeError: partially initialized module 'pandas' has no attribute 'plotting' (most likely due to a circular import) </details>
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Backport PR #33462 on branch 1.0.x (BUG: None converted to NaN after …
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0
2020-05-05T12:16:39Z
2020-05-05T12:55:24Z
2020-05-05T12:55:16Z
MEMBER
null
…groupby first and last) xref #33462 fixes regression in 1.0.2 (#32800)
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Failing test_missing_required_dependency in pandas-wheels
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2
2020-05-05T13:07:38Z
2020-10-27T12:49:45Z
2020-10-27T12:49:45Z
CONTRIBUTOR
null
The test `test_missing_required_dependency` is failing in MacPython/pandas-wheels. https://dev.azure.com/pandas-dev/pandas-wheels/_build/results?buildId=34824&view=logs&j=c0130b29-789d-5a3c-6978-10796a508a7f&t=e120bc6c-1f5e-5a41-8f0a-1d992cd2fbfb. This has caused issues in the past. It's low priority so for now I'm just going to skip it over there.
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2020-05-05T13:14:40Z
2020-05-05T14:39:31Z
2020-05-05T14:39:25Z
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…h EA columns and numeric_only=True) xref #33761 fixes regression in 1.0.0 (#33256)
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Backport PR #33629 on branch 1.0.x (BUG: Fix Categorical use_inf_as_n…
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2020-05-05T14:21:33Z
2020-05-05T19:31:54Z
2020-05-05T19:31:50Z
MEMBER
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…a bug) xref #33629 fixed regression in 1.0.0 (#33594) # NOTE: code changes in #33629 not really suitable for backport.
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34,002
BUG: read_csv() wrong reading if comment-character included in na_value
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2020-05-05T15:24:16Z
2020-06-05T20:36:18Z
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- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [ ] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```python import pandas as pd from io import StringIO dataframe_file = ( "# this is a comment\n" "1,2,3,4\n" "1,2,3,4#inline comment\n" "1,2#,3,4\n" "1,2,#N/A,4\n" ) dataframe = pd.read_csv(StringIO(dataframe_file), comment="#", na_values="#N/A") print(dataframe) ``` Output: ``` 1 2 3 4 0 1 2 3.0 4.0 1 1 2 NaN NaN 2 1 2 NaN NaN ``` #### Problem description On the last row, it should read the 3rd value (`#N/A`) as NA-Value (`NaN`) and not as a comment. But because the value `#N/A` starts with the comment-character `#` the rest of the line is interpreted as comment and the last value is not read. #### Expected Output ``` 1 2 3 4 0 1 2 3.0 4.0 1 1 2 NaN NaN 2 1 2 NaN 4.0 ``` #### Output of ``pd.show_versions()`` <details> INSTALLED VERSIONS ------------------ commit : None python : 3.7.7.final.0 python-bits : 64 OS : Linux OS-release : 5.6.8-arch1-1 machine : x86_64 processor : byteorder : little LC_ALL : None LANG : en_US.UTF-8 LOCALE : en_US.UTF-8 pandas : 1.0.3 numpy : 1.18.1 pytz : 2020.1 dateutil : 2.8.1 pip : 20.0.2 setuptools : 46.1.3.post20200330 Cython : 0.29.17 pytest : 5.4.1 hypothesis : 5.8.3 sphinx : 3.0.3 blosc : None feather : None xlsxwriter : 1.2.8 lxml.etree : 4.5.0 html5lib : 1.0.1 pymysql : None psycopg2 : None jinja2 : 2.11.2 IPython : 7.13.0 pandas_datareader: None bs4 : 4.9.0 bottleneck : 1.3.2 fastparquet : None gcsfs : None lxml.etree : 4.5.0 matplotlib : 3.1.3 numexpr : 2.7.1 odfpy : None openpyxl : 3.0.3 pandas_gbq : None pyarrow : None pytables : None pytest : 5.4.1 pyxlsb : None s3fs : None scipy : 1.4.1 sqlalchemy : 1.3.16 tables : 3.6.1 tabulate : None xarray : None xlrd : 1.2.0 xlwt : 1.3.0 xlsxwriter : 1.2.8 numba : 0.49.0 </details>
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2020-05-05T15:26:06Z
2020-05-05T19:30:54Z
2020-05-05T19:30:50Z
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…header) xref #32870
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Backport PR #33292 on branch 1.0.x (REGR: Fix bug when replacing cate…
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2020-05-05T15:41:40Z
2020-05-05T19:30:18Z
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…gorical value with self) xref #33292 fixes regression in 1.0.0 #33288
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release note for #33102
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2020-05-05T16:01:51Z
2020-05-06T09:14:14Z
2020-05-06T09:14:08Z
MEMBER
null
xref #33157
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MDExOlB1bGxSZXF1ZXN0NDEzNjIxNDEw
34,006
CLN: remove unused out-of-bounds handling
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2020-05-05T16:26:29Z
2020-05-05T22:40:51Z
2020-05-05T22:24:38Z
MEMBER
null
We only have one test that goes through the OOB handling code, and that re-raises within the OOB handling. We're better off being strict here like everywhere else rather than having spotty support.
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34,007
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2020-05-05T18:11:34Z
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5
2020-05-05T20:09:23Z
2020-05-09T21:43:48Z
2020-05-09T20:20:33Z
MEMBER
null
The existing cimport of pd.NA into tslibs.nattype is a circular dependency (its not actually clear to me why it doesnt raise). I'm finding that its presence is making other refactoring around tslibs.offsets more difficult. This PR moves the import of pd.NA to tslib, breaking the circular dependency. This _does_ change some behavior, but none that is tested, so we should discuss what places we want to recognize pd.NA. In particular, `pd.Timedelta(pd.NA)` returns `NaT` in master and raises `ValueError` in this PR. `pd.Timestamp(pd.NA)` and `pd.Period(pd.NA)` raise TypeError and ValueError, respectively, in both master and this PR. cc @jorisvandenbossche what is your preferred behavior?
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BUG: ValueError: Given date string not likely a datetime when grouping by PeriodIndex level
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2
2020-05-05T20:12:28Z
2020-05-26T09:28:10Z
2020-05-19T08:43:05Z
CONTRIBUTOR
null
- [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the latest version of pandas. - [x] (optional) I have confirmed this bug exists on the master branch of pandas. --- #### Code Sample, a copy-pastable example ```pytb In [10]: t = pd.Series([1], index=pd.PeriodIndex(['2000'], name="A", freq="D")) In [11]: t.groupby(level="A").size() --------------------------------------------------------------------------- KeyError Traceback (most recent call last) ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/indexes/period.py in get_loc(self, key, method, tolerance) 593 try: --> 594 return self._engine.get_loc(key) 595 except KeyError: pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc() pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc() pandas/_libs/index_class_helper.pxi in pandas._libs.index.Int64Engine._check_type() KeyError: 'A' During handling of the above exception, another exception occurred: ValueError Traceback (most recent call last) <ipython-input-11-ca2eac2f77ff> in <module> ----> 1 t.groupby("A").size() ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/series.py in groupby(self, by, axis, level, as_index, sort, group_keys, squeeze, observed) 1685 group_keys=group_keys, 1686 squeeze=squeeze, -> 1687 observed=observed, 1688 ) 1689 ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/groupby/groupby.py in __init__(self, obj, keys, axis, level, grouper, exclusions, selection, as_index, sort, group_keys, squeeze, observed, mutated) 407 sort=sort, 408 observed=observed, --> 409 mutated=self.mutated, 410 ) 411 ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/groupby/grouper.py in get_grouper(obj, key, axis, level, sort, observed, mutated, validate) 588 589 elif is_in_axis(gpr): # df.groupby('name') --> 590 if gpr in obj: 591 if validate: 592 obj._check_label_or_level_ambiguity(gpr, axis=axis) ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/generic.py in __contains__(self, key) 1848 def __contains__(self, key) -> bool_t: 1849 """True if the key is in the info axis""" -> 1850 return key in self._info_axis 1851 1852 @property ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/indexes/period.py in __contains__(self, key) 384 else: 385 try: --> 386 self.get_loc(key) 387 return True 388 except (TypeError, KeyError): ~/Envs/dask-dev/lib/python3.7/site-packages/pandas/core/indexes/period.py in get_loc(self, key, method, tolerance) 598 599 try: --> 600 asdt, parsed, reso = parse_time_string(key, self.freq) 601 key = asdt 602 except TypeError: pandas/_libs/tslibs/parsing.pyx in pandas._libs.tslibs.parsing.parse_time_string() pandas/_libs/tslibs/parsing.pyx in pandas._libs.tslibs.parsing.parse_datetime_string_with_reso() ValueError: Given date string not likely a datetime. ``` #### Problem description With a regular Index, we see the following ```python In [13]: s = pd.Series([1], index=pd.Index(['a'], name='A')) In [14]: s.groupby(level="A").size() Out[14]: A a 1 dtype: int64 ``` This seems to only affect PeriodIndex. DatetimeIndex works fine. #### Expected Output ```python A 2000-01-01 1 Freq: D, dtype: int64 ```
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Add fix to raise error when category value 'x' is not predefined but is assigned through df.loc[..]=x
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23
2020-05-05T20:36:34Z
2021-10-04T00:11:43Z
2021-10-04T00:11:42Z
CONTRIBUTOR
null
- [X] closes #25383 - [X] tests passed, new test added - [X] passes `black pandas` - [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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BUG: groupby with as_index=False shouldn't modify grouping columns
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4
2020-05-05T21:19:29Z
2020-07-11T16:02:05Z
2020-05-27T12:43:34Z
MEMBER
null
- [x] closes #32579 - [x] closes #21090 - [x] tests added / passed - [x] passes `black pandas` - [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff` - [x] whatsnew entry This makes any groupby function that uses _GroupBy._make_wrapper to act on self._obj_with_exclusions rather than self._selected_obj, in parallel with the cython paths. Also similar to the cython paths, the grouping columns are added back onto the result in _wrap_applied_output. Similar remarks apply to nunique, which does not go through the _make_wrapper. After finishing this, I found PR #29131. This PR does not change the behavior of calling apply() itself, only the previous code paths that would internally go through apply. Also, the change made there does not have any impact when as_index is False.
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ENH: Add compression to stata exporters
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3
2020-05-05T22:13:55Z
2020-07-28T14:41:35Z
2020-05-12T16:10:36Z
CONTRIBUTOR
null
Add standard compression optons to stata exporters closes #26599 - [X] closes #26599 - [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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34,014
Update setting data pointers for Cython 3
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34
2020-05-05T22:26:12Z
2021-09-11T20:17:37Z
2021-09-11T02:40:37Z
CONTRIBUTOR
null
Need to update the following locations - [x] _libs/window/aggregations.pyx: `bufarr.data` - [ ] _libs/reduction.pyx: `chunk.data` --- https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=34888&view=logs&j=33ccdd52-c922-5ef2-8209-78215e36d994&t=046ffbec-62c2-54e3-e88a-7745f4292bb6&l=457 just started failing. cc @pandas-dev/pandas-core @pandas-dev/pandas-triage if anyone has insights
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34,015
REF: update iNaT imports
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34,016
CLN: remove normalize_datetime
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2020-05-06T00:47:22Z
2020-05-07T00:39:29Z
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No longer necessary following #34006
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