GitHub · Where software is built

Announcement issue for plugin API changes
#6617 · msullivan opened on Apr 3, 2019
23

Labels Milestones New issue

mypy doesn't get error with typed <code>dict(*{'A': 10})</code> while Python interpreter gets error

#20702

· hyperkai opened

on Jan 30, 2026

Optional bytes type not narrowed after asserting equality

topic-type-narrowing

#20701

· p-sawicki opened

on Jan 30, 2026

PEP649/749: cyclic definition error when defaulting <code>TypeVar</code> on base class to subclass

#20698

· randolf-scholz opened

on Jan 30, 2026

Running mypy on itertools.pyi fails

#20697

· p-sawicki opened

on Jan 30, 2026

Type narrowing of <code>target: type[T]</code> using insinstance seems to fool mypy

topic-type-narrowing

#20690

· juliancoffee opened

on Jan 29, 2026

Unreachability should detect redundant <code>isinstance</code>s even for <code>object</code> arguments

topic-reachability

#20668

· A5rocks opened

on Jan 28, 2026

Incorrect type inference with PEP 646 Unpack and self-type annotations

topic-type-variables

#20651

· zzzeek opened

on Jan 26, 2026

Inconsistent behavior for missing type variables in return slots

#20649

· cgranade opened

on Jan 25, 2026

ENH: Support slack variables (lower bound emulation)

#20648

· randolf-scholz opened

on Jan 24, 2026

Signature inference for special methods

#20647

· user202729 opened

on Jan 24, 2026

Generic method in generic class impacting type signature of unrelated method

#20644

· lijok opened

on Jan 23, 2026

Show relative error location for function aliases

topic-error-reporting

topic-incremental

#20640

· ilevkivskyi opened

on Jan 23, 2026