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BUG: HDF5 file stores hardcoded pandas version "0.15.2" instead of actual pandas version

Clean

IO HDF5read_hdf, HDFStoreread_hdf, HDFStore

Status: Open.

#62792 In pandas-dev/pandas;

· grzanka opened on Oct 22, 2025

CLN: Use IndentPPDirectives AfterHash in clang-format

Clean

Code StyleCode style, linting, code_checksCode style, linting, code_checks

Status: Open.

#62693 In pandas-dev/pandas;

· WillAyd opened on Oct 14, 2025

CLN: Use dedup_names for column name mangling in Python parser (#50371)

Clean

Stale

Status: Open (in progress).

pandas-dev/pandasnumber 61670

#61670 In pandas-dev/pandas;

· Veneel77 opened on Jun 16, 2025

REF: dtype_backend argument in sql module mixes lib.no_default and numpy

Clean

IO SQLto_sql, read_sql, read_sql_queryto_sql, read_sql, read_sql_query

Status: Open.

#60326 In pandas-dev/pandas;

· WillAyd opened on Nov 15, 2024

STY: is_ci_environment seems like an antipattern

CIContinuous IntegrationContinuous Integration

Clean

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Open.

#55465 In pandas-dev/pandas;

· jbrockmendel opened on Oct 9, 2023

TST: Standardize GitHub references

Clean

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Open.

#55461 In pandas-dev/pandas;

· rhshadrach opened on Oct 9, 2023

CLN: Add is_hashable_non_slice

Clean

Status: Open.

#55152 In pandas-dev/pandas;

· lithomas1 opened on Sep 15, 2023

DISC: Make all user-facing dtypes ExtensionDtype

API Design

Clean

ExtensionArrayExtending pandas with custom dtypes or arrays.Extending pandas with custom dtypes or arrays.

PDEP missing valuesIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprintIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint

RefactorInternal refactoring of codeInternal refactoring of code

Status: Open.

#53778 In pandas-dev/pandas;

· jbrockmendel opened on Jun 21, 2023

CLN: Use dedup_names in all instances where duplicate column names are renamed

Clean

good first issue

IO HTMLread_html, to_html, Styler.apply, Styler.applymapread_html, to_html, Styler.apply, Styler.applymap

Status: Open.

#50371 In pandas-dev/pandas;

· datapythonista opened on Dec 21, 2022

TST: Cleanup tests from numeric_only / nuisance deprecation

Clean

Nuisance ColumnsIdentifying/Dropping nuisance columns in reductions, groupby.add, DataFrame.applyIdentifying/Dropping nuisance columns in reductions, groupby.add, DataFrame.apply

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Open.

#50133 In pandas-dev/pandas;

· rhshadrach opened on Dec 8, 2022

BUG: Validate All Py_* Functions in C Extensions check for NULL

Clean

Status: Open.

#49756 In pandas-dev/pandas;

· WillAyd opened on Nov 17, 2022

BUG/CLN: Vendored ujson Module

Bug

Clean

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Open.

#49604 In pandas-dev/pandas;

· lithomas1 opened on Nov 9, 2022