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GitHub / python/mypy issues and pull requests

#19455 - Apply union expansion when checking ops to typevars

Pull Request - State: open - Opened by sterliakov 16 days ago

#19453 - Prevent a crash when InitVar is redefined with a method in a subclass

Pull Request - State: closed - Opened by sterliakov 16 days ago - 1 comment

#19450 - [mypyc] Report error when registering a nested function

Pull Request - State: closed - Opened by p-sawicki 16 days ago

#19448 - Fix swapping TypeVars with defaults.

Pull Request - State: closed - Opened by randolf-scholz 16 days ago - 1 comment

#19447 - Fix typevar default swapping with defaults

Pull Request - State: open - Opened by randolf-scholz 16 days ago

#19446 - Sync typeshed

Pull Request - State: closed - Opened by cdce8p 16 days ago - 2 comments

#19445 - [mypyc] Refactor: make LoadMem not borrow by default

Pull Request - State: closed - Opened by JukkaL 16 days ago

#19440 - Sync typeshed

Pull Request - State: open - Opened by github-actions[bot] 17 days ago

#19438 - mypy does not type check arguments to `Annotated`

Issue - State: closed - Opened by eltoder 17 days ago - 1 comment
Labels: bug

#19437 - [mypyc] Add SetElement op for initializing struct values

Pull Request - State: open - Opened by JukkaL 17 days ago

#19437 - [mypyc] Add SetElement op for initializing struct values

Pull Request - State: closed - Opened by JukkaL 17 days ago

#19436 - Updates to 1.17 changelog

Pull Request - State: closed - Opened by JukkaL 17 days ago

#19435 - [mypyc] Add primitives for isinstance of built-in types

Pull Request - State: open - Opened by p-sawicki 17 days ago

#19435 - [mypyc] Add primitives for isinstance of built-in types

Pull Request - State: closed - Opened by p-sawicki 17 days ago

#19434 - [mypyc] Simplify IR generated for "for" loops over strings

Pull Request - State: closed - Opened by JukkaL 17 days ago

#19433 - `func-returns-value` false positive for union type?

Issue - State: open - Opened by asottile 18 days ago
Labels: bug

#19432 - Add functools.lru_cache plugin support Fixes #16261

Pull Request - State: open - Opened by machin0r 18 days ago - 2 comments

#19431 - feat(overloads): Expand finite sum types into a union of possible types

Pull Request - State: open - Opened by mimre25 18 days ago - 1 comment

#19430 - Walrus narrowing not propagated from inside expression

Issue - State: open - Opened by hauntsaninja 19 days ago - 4 comments
Labels: bug, topic-pep-572, good-second-issue, topic-type-narrowing

#19429 - Mypy configuration is incomplete

Issue - State: open - Opened by heyshahabuddin 19 days ago - 1 comment
Labels: bug, pending

#19428 - Fix "ignored exception in `hasattr`" in dmypy

Pull Request - State: open - Opened by sterliakov 20 days ago - 1 comment

#19427 - Initial changelog for 1.17 release

Pull Request - State: closed - Opened by esarp 20 days ago

#19425 - AssertionError raised after #19248

Issue - State: open - Opened by SemMulder 20 days ago - 8 comments
Labels: bug, topic-daemon

#19424 - [mypyc] Remove the unused CPyList_GetItemUnsafe primitive

Pull Request - State: closed - Opened by JukkaL 20 days ago

#19423 - [mypyc] Add a few native int helper irbuilder methods

Pull Request - State: closed - Opened by JukkaL 20 days ago

#19422 - Support attribute access on enum members correctly

Pull Request - State: open - Opened by sterliakov 21 days ago - 1 comment

#19421 - `array` generic changes type in isinstance check

Issue - State: closed - Opened by InvincibleRMC 21 days ago - 4 comments
Labels: bug, topic-type-variables, topic-type-narrowing, pending

#19419 - [mypyc] Add back test for next with list iterator

Pull Request - State: closed - Opened by p-sawicki 21 days ago

#19418 - Type of an Enum nonmember is wrong when accessed through a member

Issue - State: open - Opened by cfriedland5 21 days ago
Labels: bug, topic-enum

#19417 - Move `is_defined_in_stub` to shared checker API to break import cycle

Pull Request - State: closed - Opened by sterliakov 22 days ago - 1 comment

#19416 - [mypyc] Use PyList_Check for isinstance(obj, list)

Pull Request - State: closed - Opened by p-sawicki 22 days ago

#19415 - [mypyc] Speed up for loop over native generator

Pull Request - State: closed - Opened by JukkaL 22 days ago

#19414 - `NamedTuple`'s `_tuplegetter` is not recognized

Issue - State: open - Opened by Gatsik 22 days ago
Labels: topic-named-tuple, topic-runtime-semantics

#19413 - Unsupported operand types for + ("list[None]" and "list[str]")

Issue - State: closed - Opened by randolf-scholz 22 days ago - 3 comments
Labels: bug

#19412 - RuntimeError: Not implemented mypy.types.TypeGuardedType

Issue - State: closed - Opened by gopidesupavan 22 days ago - 6 comments
Labels: crash

#19411 - Detect missing or incorrect overload defaults

Issue - State: open - Opened by MarcoGorelli 22 days ago - 4 comments
Labels: feature

#19408 - perf: try to cache inner contexts of overloads

Pull Request - State: open - Opened by sterliakov 23 days ago - 5 comments

#19407 - [mypyc] Report error on reserved method name

Pull Request - State: closed - Opened by p-sawicki 23 days ago

#19406 - [mypyc] Add is_bool_or_bit_rprimitive

Pull Request - State: closed - Opened by p-sawicki 23 days ago

#19405 - More shards for `mypy-primer`

Pull Request - State: closed - Opened by randolf-scholz 23 days ago - 4 comments

#19404 - feat: add helpful info to internal AssertionError excs

Pull Request - State: closed - Opened by BobTheBuidler 23 days ago - 2 comments

#19403 - [CI]: `mypy-primer(0)` timeout due to long checking of `colour`

Issue - State: open - Opened by randolf-scholz 23 days ago - 11 comments
Labels: topic-developer

#19402 - [mypyc] Add faster primitive for string equality

Pull Request - State: closed - Opened by JukkaL 23 days ago

#19401 - [mypyc] Add tests for string equality

Pull Request - State: closed - Opened by JukkaL 23 days ago - 1 comment

#19400 - perf: return from `is_subtype` early

Pull Request - State: open - Opened by sterliakov 23 days ago - 10 comments

#19399 - Draft: Solve intermediate variable bug

Pull Request - State: open - Opened by randolf-scholz 23 days ago - 2 comments

#19398 - [mypyc] Speed up native-to-native calls using await

Pull Request - State: closed - Opened by JukkaL 23 days ago

#19397 - perf: add `__slots__` to `SubtypeContext`

Pull Request - State: closed - Opened by ngnpope 23 days ago - 7 comments

#19396 - [mypyc] Simplify comparison of tuple elements

Pull Request - State: closed - Opened by p-sawicki 24 days ago - 2 comments

#19395 - [mypyc] Raise NameError on undefined names

Pull Request - State: closed - Opened by p-sawicki 24 days ago

#19394 - perf: add `__slots__` to `SubtypeVisitor`

Pull Request - State: closed - Opened by sterliakov 24 days ago - 1 comment

#19393 - [pre-commit.ci] pre-commit autoupdate

Pull Request - State: open - Opened by pre-commit-ci[bot] 24 days ago - 1 comment

#19392 - Erroneous "Self argument missing" error when decorators are used

Issue - State: open - Opened by hvenev 24 days ago - 1 comment
Labels: bug

#19391 - Match on tuples and possibly-undefined

Issue - State: closed - Opened by pabloestevez94 24 days ago
Labels: bug, topic-match-statement, topic-type-narrowing

#19390 - [mypyc] Use per-type free "lists" for nested functions

Pull Request - State: closed - Opened by JukkaL 24 days ago - 1 comment

#19389 - Packaging: license declaration uses outdated format to-be removed Feb. 18, 2026

Issue - State: open - Opened by sterliakov 24 days ago - 2 comments
Labels: topic-developer

#19388 - Remove all nested imports from default plugin

Pull Request - State: closed - Opened by ilevkivskyi 24 days ago - 2 comments

#19387 - Create Cqrnewinvest bot

Pull Request - State: closed - Opened by Shinader123 25 days ago - 1 comment

#19386 - Feature: Clear type info on del for local inferred variables (fixes #10005)

Pull Request - State: open - Opened by brxno3107 25 days ago - 1 comment

#19385 - Speed up the default plugin

Pull Request - State: closed - Opened by JukkaL 25 days ago - 2 comments

#19384 - Subtype checking micro-optimization

Pull Request - State: closed - Opened by JukkaL 25 days ago - 3 comments

#19383 - [mypyc] Add support for C string literals in the IR

Pull Request - State: closed - Opened by JukkaL 25 days ago

#19382 - Try to fix problems caused by in-place modification of typevar defaults

Pull Request - State: open - Opened by sterliakov 26 days ago - 1 comment

#19381 - overload, Protocol and generic self: annotations

Issue - State: open - Opened by Alan-Chen99 26 days ago
Labels: bug, topic-protocols, topic-overloads, topic-self-types

#19380 - Enable --pretty by default

Pull Request - State: open - Opened by victorletichevsky 26 days ago - 1 comment

#19379 - Support type checking code fragment in profile script

Pull Request - State: closed - Opened by JukkaL 27 days ago - 1 comment

#19377 - 'Subclass of "A" and "B" cannot exist: would have incompatible method signatures' is usually wrong

Issue - State: open - Opened by JelleZijlstra 27 days ago - 4 comments
Labels: bug, topic-reachability, topic-inheritance

#19375 - [mypyc] Implement `str.lower()` and `str.upper()` primitive

Pull Request - State: open - Opened by Jahongir-Qurbonov 27 days ago
Labels: topic-mypyc

#19374 - Fix `Enum.value` inference for `Enum`s with `@cache`d methods

Pull Request - State: open - Opened by kmurphy4 27 days ago - 4 comments

#19373 - Type statement inside class scope not able to reference class generics

Issue - State: open - Opened by ruipin 27 days ago
Labels: bug, topic-type-variables, topic-pep-695

#19372 - [mypyc] Fix comparison of tuples with different lengths

Pull Request - State: closed - Opened by p-sawicki 28 days ago - 1 comment
Labels: topic-mypyc

#19371 - Bump version to 1.18.0+dev

Pull Request - State: closed - Opened by esarp 28 days ago - 1 comment

#19370 - [mypyc] Document some of our inheritance conventions

Pull Request - State: closed - Opened by JukkaL 29 days ago
Labels: topic-mypyc

#19369 - Assignment to field of typed dict doesn't change its (field) type

Issue - State: open - Opened by RomanValov 29 days ago
Labels: bug, topic-typed-dict, topic-type-narrowing

#19368 - `Enum.value` typed as `Any` when using `functools.cache`

Issue - State: open - Opened by kmurphy4 30 days ago - 4 comments
Labels: bug, topic-enum

#19367 - Better binding with implicit type variables

Issue - State: closed - Opened by randolf-scholz about 1 month ago - 6 comments
Labels: bug, question, topic-inference

#19366 - `type: ignore` command not recognized after other comment

Issue - State: open - Opened by Paulchen5 about 1 month ago - 4 comments
Labels: feature, topic-parser, topic-type-ignore, pending

#19365 - Inconsistent behaviour when updating a typed dict with a "subset" typeddict

Issue - State: closed - Opened by Alexandre-SCHOEPP about 1 month ago - 8 comments
Labels: bug, topic-typed-dict, topic-error-reporting, topic-calls

#19364 - Sync typeshed

Pull Request - State: closed - Opened by github-actions[bot] about 1 month ago - 1 comment

#19363 - dmypy does not catch `--warn-unused-ignores` in successive runs

Issue - State: closed - Opened by clambert-jt about 1 month ago - 2 comments
Labels: bug, pending

#19362 - Order dependent `override` error when subclassing with multiple typevars with defaults

Issue - State: open - Opened by randolf-scholz about 1 month ago
Labels: bug, topic-type-variables

#19361 - [mypyc] Fix AttributeError in async try/finally with mixed return paths

Pull Request - State: closed - Opened by Chainfire about 1 month ago - 2 comments

#19360 - Allow defining type for dynamically generated types.

Issue - State: open - Opened by albertferras-vrf about 1 month ago - 4 comments
Labels: feature, topic-plugins

#19359 - Internal error: KeyError 'setter_type' during node deserialization

Issue - State: open - Opened by ahmedelq about 1 month ago - 3 comments
Labels: topic-incremental, crash

#19358 - Do not show protocol compatibility note against unpacked sequence or mapping

Pull Request - State: closed - Opened by sterliakov about 1 month ago - 1 comment

#19357 - Unexpected error using Union[] as the argument to the value field of a dictionary

Issue - State: closed - Opened by sborisch about 1 month ago - 3 comments
Labels: bug

#19356 - Remove unnecessary workarounds from bind_self()

Pull Request - State: closed - Opened by ilevkivskyi about 1 month ago - 1 comment

#19355 - Code after `yield from` a generator that cannot end should be unreachable

Issue - State: open - Opened by A5rocks about 1 month ago - 1 comment
Labels: bug, topic-reachability

#19354 - Fix wrong names listed in "too few arguments" message

Pull Request - State: open - Opened by sterliakov about 1 month ago - 1 comment

#19353 - [mypyc] Fix exception swallowing in async try/finally blocks with await

Pull Request - State: closed - Opened by Chainfire about 1 month ago - 9 comments
Labels: topic-mypyc

#19352 - Support `_value_` as a fallback for ellipsis Enum members

Pull Request - State: closed - Opened by sterliakov about 1 month ago - 6 comments