16 Pull requests merged by 8 people

• Use dedicated tags for most common instances

  #19762 merged Sep 1, 2025

• [mypyc] Speed up unary "not"

  #19774 merged Sep 1, 2025

• [mypyc] Fix C function signature

  #19773 merged Sep 1, 2025

• Mypy micro-optimizations (batch 3/3)

  #19770 merged Sep 1, 2025

• Sync typeshed

  #19772 merged Sep 1, 2025

• Use empty context as fallback for return statements

  #19767 merged Sep 1, 2025

• Update stubinfo for latest typeshed

  #19771 merged Aug 31, 2025

• Mypy micro-optimizations (batch 2/3)

  #19769 merged Aug 31, 2025

• Mypy micro-optimizations (batch 1/3)

  #19768 merged Aug 31, 2025

• Use fast Python wrappers in native_internal

  #19765 merged Aug 31, 2025

• Try fixing test times after GC hack

  #19766 merged Aug 30, 2025

• Use some macros in native_internal

  #19757 merged Aug 30, 2025

• Add idlemypyextension to IDE integrations section

  #18615 merged Aug 30, 2025

• --strict-equality for None

  #19718 merged Aug 30, 2025

• Do not display import-related errors after module-level always false assert

  #19347 merged Aug 30, 2025

• Fix forward references in type parameters of overparameterized PEP 695 type aliases

  #19725 merged Aug 29, 2025

10 Issues closed by 4 people

• Not identifying None check on multiple values using "any" or "all"

  #19775 closed Sep 1, 2025

• mypy incorrectly tags function argument TypeVar with return type when called from a caller with the same signature

  #16924 closed Sep 1, 2025

• False positive when using coroutines and generics

  #15886 closed Sep 1, 2025

• Inspection fails on second-order circular imports for dataclasses

  #10200 closed Aug 31, 2025

• Flag `None` check on value that cannot be `None`

  #18386 closed Aug 30, 2025

• mypy tries to follow imports in files with top-level sys.platform asserts on non-matching platforms

  #19346 closed Aug 30, 2025

• trouble with a str

  #19763 closed Aug 30, 2025

• Crash for certain type alias definitions with parameter with parameter bounded by a forward type

  #19734 closed Aug 29, 2025

• 1.17 Release Planning

  #19306 closed Aug 29, 2025

• MyPy 1.17.1 crashing when using Pandera 0.25.0 and pandas-stubs 2.3.2.250827

  #19754 closed Aug 29, 2025

2 Issues opened by 2 people

• Faster parser

  #19776 opened Sep 1, 2025

• 1.18 Release Planing

  #19764 opened Aug 29, 2025

17 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Stubtest: check `_value_` for ellipsis-valued stub enum members

  #19760 commented on Sep 1, 2025 • 4 new comments

• feat: new mypyc primitives for weakref.proxy

  #19217 commented on Sep 1, 2025 • 4 new comments

• [mypyc] feat: new primitive for `int.to_bytes`

  #19674 commented on Aug 29, 2025 • 0 new comments

• [mypyc] feat: cache len for container creation from expressions with length known at compile time

  #19503 commented on Aug 30, 2025 • 0 new comments

• Fix binding difference between callables and callback protocols

  #15993 commented on Aug 31, 2025 • 0 new comments

• `dataclass_transform` decorator not detected when using alias

  #19731 commented on Sep 1, 2025 • 0 new comments

• Dataclasses: `No overload variant of "asdict" matches argument type "Self" [call-overload]` when deciding decorator conditionally

  #17242 commented on Aug 31, 2025 • 0 new comments

• Code review request: support for asdict returning TypedDict

  #10104 commented on Aug 31, 2025 • 0 new comments

• Incremental improvements to the fixed format serialization

  #19738 commented on Aug 30, 2025 • 0 new comments

• Remove support for JSON serialization format

  #19697 commented on Aug 30, 2025 • 0 new comments

• `--enable-error-code unreachable` does not enable unreachability analysis, yet neither is it reported as an invalid error code (etc)

  #19604 commented on Aug 30, 2025 • 0 new comments

• Clarify + validate python_version

  #19729 commented on Aug 30, 2025 • 0 new comments

• Inconsistent processing Literal as TypeVar

  #19761 commented on Aug 30, 2025 • 0 new comments

• dmypy Suggest assertion error in `bind_function_type_variables`

  #16708 commented on Aug 30, 2025 • 0 new comments

• Incorrect mapping of actual to formal arguments.

  #19692 commented on Aug 30, 2025 • 0 new comments

• redundant-expr does not catch always-True `if`

  #19728 commented on Aug 30, 2025 • 0 new comments

• Incorrect argument names for dataclass with "private" (mangled) members

  #19755 commented on Aug 30, 2025 • 0 new comments