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Pandas DataFrame vs Series vs Index arithmetic Roundup
2025-02-08 22:37:33
6525
Categorical:- [x] #19513 Comparisons between Categorical, CategoricalIndex, and Series[category] are inconsistent- [x] #...
Pandas Series[Period] +/- NaT returns Series[datetime64]
2025-02-08 22:37:28
2608
per = pd.Period('2016Q1')ser = pd.Series([per])>>> ser - pd.NaT0 NaTdtype: datetime64[ns]>>> ser + p...
Pandas DOC: Rethink recommending eval/query in "Enhancing performance" section of user guide
2025-02-08 22:37:23
3671
Location of the documentationhttps://pandas.pydata.org/pandas-docs/stable/user_guide/enhancingperf.html#expression-evalu...
Pandas API: Difference between GroupBy, DataframeGroupBy, and SeriesGroupBy
2025-02-08 22:37:17
2231
Hi allI couldn't find a good answer to this on StackOverflow, but I was trying to understand what the conceptual differe...
Pandas BUG: df.groupby().nth() returns wrong order of values
2025-02-08 22:37:12
6400
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas REF/API: make pd.Grouper immutable
2025-02-08 22:37:07
347
Grouper._set_grouper (called by Grouper._get_grouper) sets some of its own attributes. It would be much easier to reaso...
Pandas QST: | (or) behavior when working with two series that have different indexes
2025-02-08 22:37:01
2287
[x] I have searched the [pandas] tag on StackOverflow for similar questions.[x] I have asked my usage related question o...
Pandas DataFrame.query raises ValueError when comparing columns with nullable dtypes
2025-02-08 22:36:54
6518
Code SampleIn [2]: df1 = pd.DataFrame({'A': [1, 1, 2], 'B': [1, 2, 2]})In [3]: df1.dtypesOut[3]:A int64B int64dtyp...
Pandas BUG: Query on Int64Dtype raises ValueError
2025-02-08 22:36:49
3543
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas Int64 can't be used in pandas.eval()
2025-02-08 22:36:44
7582
This code works fineimport pandas as pdd = pd.DataFrame([[1, 2], [3, 4]], columns=['a', 'b'], dtype="Float64")...
Pandas AmbigousTimeError on Timestamp.floor during dst change
2025-02-08 22:36:39
9012
Code Sample, a copy-pastable example if possibleimport pandas as pdpd.Timestamp('2018-11-04 01:55:17.869342-0500', tz='A...
Pandas BUG: Groupby() with a categorical variable creates the incorrect number of groups when the original DF is reduced.
2025-02-08 22:36:33
3047
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas BUG: df.groupby().nth(n=3, dropna="all") throwing error
2025-02-08 22:36:27
2351
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas API: Timestamp and Timedelta .value changing in 2.0
2025-02-08 22:36:23
4578
import pandas as pdimport numpy as npdt = np.datetime64("2016-01-01", "ms")ts = pd.Timestamp(dt)>...
Pandas BUG: DataFrame.dtypes doesn't include backend for string columns
2025-02-08 22:36:13
4192
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas BUG: Different behavior for different index types
2025-02-08 22:36:09
4256
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas BUG: Calling sample() on an empty GroupbyDataFrame returns ValueError instead of an empty DF
2025-02-08 22:36:04
2463
Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
Pandas DEPR: log of deprecations in 1.x (to be removed in 2.0)
2025-02-08 22:36:01
10722
Similar issue as https://github.com/pandas-dev/pandas/issues/6581, but starting a fresh one for keeping a log of the dep...
Pandas BUG: DTA/TDA setitem breaks freq on views
2025-02-08 22:35:52
608
DatetimeArray/TimedeltaArray __setitem__ resets the array's freq to None, but this doesn't propagate to views:dti = pd.d...
Pandas CLN: Refactor Index._validate_names()
2025-02-08 22:35:46
766
Currently Index._validate_names() does not only validation, but some other unrelated to validation stuff:https://github....
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