I was trying to document my experiences with the inconsistencies of DataFrame.groupby.apply (see #22545), and one of the...

Code Sampleimport timeimport numpy as npimport pandas as pdnrows, ncols = 1000, 100# data frame with random values and a...

df = pd.DataFrame({ 'id':[1,2,2], 'cost':[5,5,5], 'letters':[['a','b'],['a','b'],['a','b']]})print(df.sum()) # ...

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xref #9772 df = pd.DataFrame({i:pd.Series(np.random.normal(size=10), index=range(10)) for...

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Correct me if I'm wrong, but isn't Series.agg supposed to reduce all rows to a singular value and Series.apply supposed ...

We currently do not test the dir of submodules of pandas.api. In #48578, a test is being added for pandas.api.typing. Te...

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Pandas version checks[X] I have checked that the issue still exists on the latest versions of the docs on main hereLocat...

Started seeing this on the arm buildshttps://app.circleci.com/pipelines/github/pandas-dev/pandas/24736/workflows/0c1b776...

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Feature Type[ ] Adding new functionality to pandas[X] Changing existing functionality in pandas[ ] Removing existing fun...

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In the resample() method, the kind= can be used if we want to convert the index of the result to PeriodIndex.s = pd._tes...

Installation check[X] I have read the installation guide.PlatformWindows-10-10.0.19044-SP0Installation MethodBuilt from ...

Code Sample, a copy-pastable example if possible# Part 1df1 = pd.DataFrame([], columns=['a', 'b', 'value'])pivot1 = df1....