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Pandas dataframe does not initialize

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#64744 In pandas-dev/pandas;

· jayw20230711 opened on Mar 21, 2026

ENH: Make NaN repr for Index match Series/DataFrame

Output-Formatting__repr__ of pandas objects, to_string__repr__ of pandas objects, to_string

Status: Open.

#64733 In pandas-dev/pandas;

· mroeschke opened on Mar 20, 2026

BUG: No longer possible to assign attrs to pandas column

Copy / view semantics

Docs

metadata_metadata, .attrs_metadata, .attrs

Status: Open.

#64711 In pandas-dev/pandas;

· sursu opened on Mar 19, 2026

Hosting of the pandas website and documentation

Docs

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

Status: Open.

#64703 In pandas-dev/pandas;

· jorisvandenbossche opened on Mar 19, 2026

BUG: to_typst creates empty cells for hidden items

Bug

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Open.

#64663 In pandas-dev/pandas;

· platlas opened on Mar 17, 2026

BUG: DataFrame.sum() crashes on empty DataFrame with string + numeric columns

Bug

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

StringsString extension data type and string dataString extension data type and string data

Status: Open.

#64657 In pandas-dev/pandas;

· repeating opened on Mar 17, 2026

·  

3.0.2

BUG: C engine of read_csv converts 1 , to an integer

Bug

IO CSVread_csv, to_csvread_csv, to_csv

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Open.

#64655 In pandas-dev/pandas;

· bilichboris opened on Mar 17, 2026

·  

3.0.2

DOC: Creating a development environment - update to Step 1: install a C Compiler

Docs

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#64650 In pandas-dev/pandas;

· tamhahn opened on Mar 17, 2026

BUG: mask(inplace=True) gives where() results in EA recursive path

Status: Open.

#64635 In pandas-dev/pandas;

· jbrockmendel opened on Mar 16, 2026

BUG/DOC: Migration User Guide is missing (404)

Docs

Status: Open.

#64622 In pandas-dev/pandas;

· cscanlin opened on Mar 15, 2026

BUG: Need to be able to specify location of legacy files for tests

Bug

IO HDF5read_hdf, HDFStoreread_hdf, HDFStore

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

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

Status: Open.

#64604 In pandas-dev/pandas;

· opoplawski opened on Mar 15, 2026

Deprecate engine="fastparquet" in pd.read_parquet

DependenciesRequired and optional dependenciesRequired and optional dependencies

DeprecateFunctionality to remove in pandasFunctionality to remove in pandas

Status: Open.

#64597 In pandas-dev/pandas;

· mroeschke opened on Mar 14, 2026