Pandas BUG: Rolling.mean downcasts extension dtypes

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas GroupBy nth with Categorical, NA Data and dropna

The nth method of GroupBy objects can accept a dropna keyword, but it doesn't handle Categorical data appropriately. For...

Pandas TST some tests in pandas/tests/io/json/test_readlines.py aren't being tested

We can see from the coverage report that they're not being run:https://app.codecov.io/gh/pandas-dev/pandas/blob/main/pan...

Pandas BUG: NumericIndex should not support float16 dtype

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG: Incorrect index with groupby and groupby.agg when observed=False using categorical columns with/without as_index=False

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas DOC: Downcasting neither warned against nor discussed

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

Pandas Duplicate --- Suggestion

Add functinality to reference "False" item.example:bool_series = df.duplicated(keep='first', reference=yes)DogCatDogoutp...

Pandas BUG: Nullable integer type ("Int64") lost after summing along columns-index [df.sum(axis=1)

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG: Excel merge cell does not handle empty strings correctly

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG: RuntimeWarning when using .to_csv with NAN on latest numpy>=1.24

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas CI: pyarrow 10 broke our ci

Some pyarrow tests were failing. Additionally this caused some weird Matplotlib behavior that pulled a really old versio...

Pandas pd.where OverflowError with large numbers

Code Sample, a copy-pastable example if possibleimport pandas as pdimport numpy as npdf = pd.DataFrame([[1.0, 2e25],[np....

Pandas STYLE pre-commit check to ensure that test functions name starts with test

In https://github.com/pandas-dev/pandas/issues/50378, I found a test which isn't run in CI because its name doesn't star...

Pandas DEPR: Unnecessary kwargs in groupby ops

Some groupby ops have args and/or kwargs unnecessarily.cummaxcummincumsumcumprodtakeskewThese should be deprecated. For ...

Pandas TYP: Numpy 1.23 typing issues

The following issues are caused by numpy 1.23pandas/_typing.py:70: error: Name "npt._ArrayLikeInt_co" is not d...

Pandas BUG: pd.DateOffset only handles milliseconds keyword argument if other keyword args are shorter than day/days

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG guess_Datetime_format doesn't guess 27.03.2003 14:55:00.000

----> 1 guess_datetime_format('27.03.2003 14:55:00.000')File ~/pandas-dev/pandas/_libs/tslibs/parsing.pyx:967, in pan...

Pandas CLN remove _assert_not_frame_equal_both?

Doesn't look like this is used anywherehttps://github.com/pandas-dev/pandas/blob/07b363ea8eee184df30b54bfae9acd04511e1cd...

Pandas DOC: Docs for MultiIndex.drop() are missing

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

Pandas Dataframe Groupby value_counts with bins parameter

Found on Stack Overflow post heredf=pd.DataFrame([[0,0],[1,100],[0,100],[2,0],[3,100],[4,100],[4,100],[4,100],[1,100],[3...
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