Issues · python/mypy · GitHub

Announcement issue for plugin API changes
#6617 · msullivan opened on Apr 3, 2019
25

Labels Milestones New issue

Union changes in Python 3.14 crash mypy

#21588

· srittau opened

on Jun 4, 2026

TypeForm incremental inconsistencies

priority-0-high

topic-incremental

topic-type-form

#21587

· gentlegiantJGC opened

on Jun 4, 2026

Incorrect type narrowing when swapping variables after isinstance check

topic-type-narrowing

#21586

· p-sawicki opened

on Jun 3, 2026

Assertion failure crash: `assert isinstance(node, Var), node` when dataclass has namedtuple() field

#21583

· correctmost opened

on Jun 3, 2026

arg-type in chained dict.get

#21581

· sam-s opened

on Jun 2, 2026

Parallel parsing sometimes crashes when compiled in free-threaded Python

parallel checking

#21578

· ilevkivskyi opened

on Jun 2, 2026

Inlining a list argument into call of function that accepts a protocol produces "incompatible type" error

#21563

· maybeetree opened

on May 29, 2026

Generic Callable return type inferred as first overload from overloaded function

#21560

· rtandy opened

on May 29, 2026

Incorrect type-var error when passing a Callable with a generic return type to a function

#21559

· absolutely-vivid opened

on May 29, 2026

`AssertionError: Must not defer during final iteration` with recursive class definition

#21549

· correctmost opened

on May 27, 2026

Stubgen does not respect RPath for transitive dependencies

#21543

· dbs4261 opened

on May 26, 2026

[2.1 regression] Incompatible types in capture pattern, can't assign a variable when using string unpacking

topic-match-statement

#21537

· WibblyGhost opened

on May 25, 2026