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BUG: Type error supplying SQLAlchemy NVARCHAR length in to_sql()

Bug

IO SQLto_sql, read_sql, read_sql_queryto_sql, read_sql, read_sql_query

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

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#61660 In pandas-dev/pandas;

· philipnye opened on Jun 14, 2025

TYP: <code>npt._ArrayLikeInt_co</code> does not exist

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#61387 In pandas-dev/pandas;

· jorenham opened on May 1, 2025

CI: Test daily with pandas-stubs tests

CIContinuous IntegrationContinuous Integration

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#54095 In pandas-dev/pandas;

· Dr-Irv opened on Jul 12, 2023

ENH: Implement "Pydantic protocol"

Enhancement

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

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#53999 In pandas-dev/pandas;

· Kludex opened on Jul 4, 2023

TYP/DOC: importing from api.py/__init__.py

API Design

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

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#48186 In pandas-dev/pandas;

· twoertwein opened on Aug 20, 2022

TYP: Remove Sequence[str] in type annotations

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#47232 In pandas-dev/pandas;

· Dr-Irv opened on Jun 4, 2022

BUG: <code>pd.MultiIndex.reindex</code> when the levels are <code>pd.Int64Index</code> behaves differently.

Closing CandidateMay be closeable, needs more eyeballsMay be closeable, needs more eyeballs

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

MultiIndex

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Usage Question

Status: Open.

#46833 In pandas-dev/pandas;

· olofahlen opened on Apr 22, 2022

TYP: how to annotate DataFrame.__getitem__

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

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#46616 In pandas-dev/pandas;

· twoertwein opened on Apr 2, 2022

ENH: Add set of tests to type check the public APIs

CIContinuous IntegrationContinuous Integration

Enhancement

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

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#45252 In pandas-dev/pandas;

· Dr-Irv opened on Jan 7, 2022

TYP: Improve typing on pandas.core.algorithms.duplicated()

duplicatedduplicated, drop_duplicatesduplicated, drop_duplicates

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#42604 In pandas-dev/pandas;

· Dr-Irv opened on Jul 19, 2021

TYP: Numpy compatibility of definition of "array like"

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

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#41807 In pandas-dev/pandas;

· Dr-Irv opened on Jun 3, 2021

BUG: invalid type annotation for equal operator of Series

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Open.

#40762 In pandas-dev/pandas;

· ikokostya opened on Apr 2, 2021