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Issues list

DOC: documentation related to how we want this to evolve, standards, testing mechanism, etc. Code Style Code style, linting, code_checks Docs Master Tracker High level tracker for similar issues Testing pandas testing functions or related to the test suite
#11 opened May 11, 2022 by simonjayhawkins updated Jun 21, 2022
Public pandas API and pandas-stubs
#161 opened Jul 22, 2022 by twoertwein updated Jul 23, 2022
DataFrame with generic type
#295 opened Sep 12, 2022 by ramonhagenaars updated Sep 13, 2022
Type checking with converters= on read_excel good first issue IO Excel read_excel, to_excel
#849 opened Jan 11, 2024 by oliverbeagley-pgg updated Jan 12, 2024
Improve handling of deprecations in stubs
#870 opened Feb 14, 2024 by Daverball updated Feb 21, 2024
Type of "apply" is partially unknown
#952 opened Jun 29, 2024 by JanEricNitschke updated Jun 29, 2024
Row-wise mapping to custom type not supported in DataFrame.apply
#1001 opened Sep 13, 2024 by bluenote10 updated Sep 24, 2024
TypeIs annotation for pands.isna is not quite accurate
#1009 opened Sep 26, 2024 by steve-mavens updated Sep 27, 2024
Invalid index type when extracting values from a multi-index data frame Indexing Related to indexing on series/frames, not to indexes themselves
#1018 opened Oct 21, 2024 by kubotty updated Oct 24, 2024
pd.Series gets converted to pd.TimestampSeries after isinstance check mypy bug Requires mypy to fix a bug
#877 opened Feb 24, 2024 by tvdboom updated Nov 11, 2024
type annotation for Index/MultiIndex.names is incorrect Blocked Requires external dependency before progressing good first issue Index Related to the Index class or subclasses
#804 opened Oct 26, 2023 by tswast updated Nov 15, 2024
Mypy complains about inconsistent MRO when using isinstance() on a generic Series object mypy bug Requires mypy to fix a bug
#269 opened Sep 5, 2022 by tmke8 updated Jan 3, 2025
mypy complains about slicing using strings mypy bug Requires mypy to fix a bug
#1079 opened Jan 3, 2025 by Dr-Irv updated Jan 3, 2025
Version 2.0 Compatibility Tracker
#624 opened Apr 3, 2023 by Dr-Irv updated Jan 15, 2025 100+
Series.diff returns Series['float'] even for nullable integers NA - MaskedArrays Related to pd.NA and nullable extension arrays
#1110 opened Feb 8, 2025 by MarcoGorelli updated Feb 10, 2025
s.str.upper doesn't preserve s type
#1149 opened Mar 7, 2025 by MarcoGorelli updated Mar 7, 2025
Disallow StringMethods for Series and Index when subtype is not str, but allow for Any mypy bug Requires mypy to fix a bug
#1159 opened Mar 11, 2025 by Dr-Irv updated Mar 11, 2025
question: how to type compatibility-only args / kwargs?
#1168 opened Mar 13, 2025 by MarcoGorelli updated Mar 13, 2025
Strict report as of 3/13/2025
#1171 opened Mar 13, 2025 by Dr-Irv updated Mar 13, 2025
Addition of a Series[int] with a complex returns Series[unknown] good first issue Series Series data structure
#1098 opened Jan 14, 2025 by loicdiridollou updated Mar 14, 2025
ProTip! Updated in the last three days: updated:>2025-06-13.