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

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

Likely to be release in March, after pandas 2.0. I guess we can decide at that point or later whether we need a 1.5.5 or...

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

Task here is:in https://github.com/pandas-dev/pandas/blob/fe85cbfb20f3f360ebba62905b93a6f98bf655c1/pyproject.toml#L201-L...

Installation check[X] I have read the installation guide.PlatformmacOS-10.16-x86_64-i386-64bitInstallation Methodpip ins...

Code at issuewith open(outputfile, "w") as file_handle: df2.to_csv(file_handle, compression='gzip')Problem ...

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

Indexing for entries in a series or dataframe with a multi-index has dramatically worse performance when using partial k...

Looks like it's almost all in tests.series.test_operators.test_operators_bitwiseIn particular, op(series, index) will al...

Code Samplemi = pd.MultiIndex.from_tuples([['A0', 'B0'],['A0', 'B1'], ['A1', 'B0'],['A1', 'B1'],['A3',...

in tests.indexes.interval.test_constructors test_constructor_dtype if we disable the tm.assert_produces_warning and inst...

xref #9595 for an overview the the indexing API, this is focused on the state of the code.Needs EyeballsTests are scatte...

We allow for partially-initialized CategoricalDtypes to compare as equal to fully-initialized ones, leading to some surp...

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

ATM we allow ~obj with any dtype, but the pyarrow dtypes only allow it with boolean dtype. We should be consistent here...

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

When exporting to Excel, it is possible to add multiple number formats and then use set_column to apply any desired nume...

There are many signatures of pandas methods that take a UDF. If I've missed methods, please let me know and will update....

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