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API: timestamp resolution inference: default to microseconds when possible

DatetimeDatetime data dtypeDatetime data dtype

Non-Nanodatetime64/timedelta64 with non-nanosecond resolutiondatetime64/timedelta64 with non-nanosecond resolution

Stale

Timestamppd.Timestamp and associated methodspd.Timestamp and associated methods

Status: Draft (not ready).

pandas-dev/pandasnumber 62031

#62031 In pandas-dev/pandas;

· jorisvandenbossche opened on Aug 3, 2025

TST: assert reading of legacy pickles against current data

IO Pickleread_pickle, to_pickleread_pickle, to_pickle

Stale

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

Status: Open (in progress).

pandas-dev/pandasnumber 61792

#61792 In pandas-dev/pandas;

· jorisvandenbossche opened on Jul 7, 2025

· 

3.0

TST (string dtype): clean-up interpolate tests

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Stale

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

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

Status: Open (in progress).

pandas-dev/pandasnumber 60653

#60653 In pandas-dev/pandas;

· jorisvandenbossche opened on Jan 3, 2025

· 

3.0

API/CoW: take view of underlying Block values for shallow (deep=False) copies

Copy / view semantics

Stale

Status: Draft (not ready).

pandas-dev/pandasnumber 58966

#58966 In pandas-dev/pandas;

· jorisvandenbossche opened on Jun 10, 2024

Add <code>strict_na</code> keyword to the assert_.._equal methods for object dtype to help with deprecation

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Stale

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

Status: Draft (not ready).

pandas-dev/pandasnumber 58072

#58072 In pandas-dev/pandas;

· jorisvandenbossche opened on Mar 29, 2024

PERF: improve StringArray.isna

PerformanceMemory or execution speed performanceMemory or execution speed performance

Stale

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

Status: Open (in progress).

pandas-dev/pandasnumber 57733

#57733 In pandas-dev/pandas;

· jorisvandenbossche opened on Mar 5, 2024

API / COW: ensure every new Series/DataFrame also has new (shallow copy) index

API Design

Copy / view semantics

Stale

Status: Draft (not ready).

pandas-dev/pandasnumber 53699

#53699 In pandas-dev/pandas;

· jorisvandenbossche opened on Jun 16, 2023

· 

3.0