Pandas BUG: DataFrame.xs multi-index drop_level=False has no effect when level= is left at default

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
  • 2025-09-09 14:05:22
  • 3224

Pandas ENH: implement shift(method='head|tail')

http://stackoverflow.com/questions/22670904/python-pandas-turn-absolute-periods-into-relative-periods/22671904?noredirec...
  • 2025-09-09 14:05:20
  • 3915

Pandas ENH: simple, compact and reversible JSON interface

Feature Type[X] Adding new functionality to pandas[ ] Changing existing functionality in pandas[ ] Removing existing fun...
  • 2025-09-09 14:05:18
  • 10944

Pandas API/DOC: Add NumpyEADtype to the public API

This is currently accessible viaIn [5]: pd.array([1], dtype="int16").dtypeOut[5]: NumpyEADtype('int16')I think...
  • 2025-09-09 14:05:14
  • 332

Pandas BUG: Index.get_indexer will change behaviour for nulls with arrow strings

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
  • 2025-09-09 14:05:12
  • 2064

Pandas BUG: PyArrow timestamp type does not work with map() function

Pandas version checks[x] I have checked that this issue has not already been reported.[x] I have confirmed this bug exis...
  • 2025-09-09 14:04:56
  • 3141

Pandas ENH: kwargs for Index.map like for Series.apply

Feature Type[X] Adding new functionality to pandas[ ] Changing existing functionality in pandas[ ] Removing existing fun...
  • 2025-09-09 14:04:54
  • 735

Pandas BUG: index map leading to ValueError: Reindexing only valid with uniquely valued Index objects

I am using Pandas 1.1.5 and get to the error ValueError: Reindexing only valid with uniquely valued Index objects.Here i...
  • 2025-09-09 14:04:52
  • 16684

Pandas API: idx.get_indexer(keys) fails if idx is non-unique, even if keys in idx are unique

Code Sample, a copy-pastable exampleimport pandas as pdpd.Index(["a", "a", "b", "c&qu...
  • 2025-09-09 14:04:50
  • 5413

Pandas DEPR: upcasting on invalid fill_value in unstack

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
  • 2025-09-09 14:04:46
  • 1078

Pandas BUG: Automatic upcast to object fails when unstacking datetime/timedelta with incompatible fill_value

Converting to object before then unstack works, whereas automatic upcast does not happen. Missing values are replaced w...
  • 2025-09-09 14:04:45
  • 1741

Pandas BUG: Infinite recursion with outer merge on categorical key column if left and right dtypes are mismatching non-nullable numeric kinds

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
  • 2025-09-09 14:04:43
  • 5550

Pandas BUG: Index[timestamp[pyarrow]].union with itself return object type

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
  • 2025-09-09 14:04:39
  • 3723

Pandas BUG: DataFrame.mean(axis=1) fails but Series.mean works incase of pandas Nullable integer dtype

[x] I have checked that this issue has not already been reported.[x] I have confirmed this bug exists on the latest vers...
  • 2025-09-09 14:04:35
  • 6294

Pandas ERR: HDF5 serialization of datelike-object dtypes should raise

UPDATE:In [157]: problem_date = old.dob.loc[4231354]In [158]: problem_dateOut[158]: datetime.date(2939, 6, 2)In [159]: t...
  • 2025-09-09 14:04:31
  • 3641

Pandas BUG: DatetimeIndex.get_indexer(timestamp[pyarrow])

Pandas version checks[x] I have checked that this issue has not already been reported.[x] I have confirmed this bug exis...
  • 2025-09-07 14:02:39
  • 637

Pandas BUG: inconsistent behaviour of the method .idxmin between timedelta datatype & int datatypes

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...
  • 2025-09-07 14:02:36
  • 5770

Pandas PERF: Potential room for optimizaing the performance of .loc with big non-unique masked index dataframe

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this issue ex...
  • 2025-09-07 14:02:32
  • 4615

Pandas DOC: Fix formatting errors in docstrings

Historically, there was no validation on how docstrings were written. Some conventions were usually followed, but as the...
  • 2025-09-07 14:02:26
  • 6936

Pandas Fix PR02 issues in docstrings

Fix the docstrings where an unknown parameter is documented (likely that they are typos, errors in the parameter format....
  • 2025-09-07 14:02:24
  • 27385
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