Pandas BUG: Hide columns doesn't work

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

Pandas "The following argument was not expected: create" when creating environment

Some people are reporting issues creating a development environment, and thatmamba env creategivesThe following argument...

Pandas BUG: 'ExponentialMovingWindow' object has no attribute 'apply' when using 'agg'

The following code fails:import numpy as npimport pandas as pddf = pd.DataFrame(np.random.normal(size=(100, 10)))df.ewm(...

Pandas CLN: Remove MultiIndex._get_grouper_for_level

49373 removed its only use. Since it's implemented on Index as well (where it's still needed), I think we should raise N...

Pandas BUG: combine_first() coerces to object for MultiIndex and all-nan index columns

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

Pandas ENH: add additional extras_require sections for optional dependencies

Is your feature request related to a problem?It would be nice to have more extras_require sections in the setup.py for o...

Pandas BUG: groupby(Grouper) with all-NaT grouping keys

[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exists on the latest vers...

Pandas BUG: index.intersection produces wrong result when using multiindex, categorie and sorted index

might be a duplicate of https://github.com/pandas-dev/pandas/issues/49337, but is still an issue on 1.5.2Pandas version ...

Pandas ENH: Delta Lake file format support

I'd love it if Pandas could support Databricks' Delta Lake file format (https://github.com/delta-io/delta). It's a type ...

Pandas DOC: to_html(notebook=bool) seems to have no effect

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

Pandas BUG: pd.offsets.MonthEnd() delevers wrong month

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

Pandas API: should SeriesGroupby.apply overwrite result name?

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

Pandas QST: Why do frame GroupBy objects and have different capitalization from RollingGroupby, etc.?

Research[X] I have searched the [pandas] tag on StackOverflow for similar questions.[X] I have asked my usage related qu...

Pandas DOC: Add func as a string to DataFrameGroupBy.transform docs

Ref: https://github.com/pandas-dev/pandas-stubs/issues/438#issuecomment-1331403901In DataFrameGroupBy.transform, the arg...

Pandas PERF: unnecessary casting in merge

[X] I have checked that this issue has not already been reported.[X] I have confirmed this issue exists on the latest ve...

Pandas DOC: Example of Dataframe given in SeriesGroupBy.transform

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

Pandas PERF: read_html: Reading one HTML file with multiple tables is much slower than loading each table separatly

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

Pandas BUG: transform("max") replaces all entries with NaN when applied after groupby with 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 BUG: SeriesGroupBy.apply sets name attribute if result is DataFrame

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

Pandas BUG: pd.Categorical(categorical, dtype="category") loses orderedness

cat = pd.Categorical([3, 1], categories=[3, 2, 1], ordered=True)res = pd.Categorical(cat, dtype="category")&gt...
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