Insights: python/mypy

20 Pull requests merged by 5 people

• Fix readthedocs build

  #15437 merged Jun 14, 2023

• Use consistent anchors for error codes

  #15435 merged Jun 14, 2023

• Fix dmypy run on Windows

  #15429 merged Jun 14, 2023

• docs: ref redirector

  #15432 merged Jun 14, 2023

• [out] version checks must be against min version or higher

  #15430 merged Jun 13, 2023

• Remove special casing for "cannot" in error messages

  #15428 merged Jun 13, 2023

• test_parse_data: fix cwd

  #15417 merged Jun 12, 2023

• [mypyc] Don't explicitly assign `NULL` values in setup functions

  #15379 merged Jun 12, 2023

• Increment version for 1.5-dev

  #15405 merged Jun 12, 2023

• Always allow returning Any from lambda

  #15413 merged Jun 11, 2023

• Add get_expression_type to CheckerPluginInterface

  #15369 merged Jun 11, 2023

• Fix crash on follow_imports_for_stubs

  #15407 merged Jun 9, 2023

• Fix crash on NamedTuple as attribute

  #15404 merged Jun 9, 2023

• Correctly track loop depth for nested functions/classes

  #15403 merged Jun 9, 2023

• Fix crash on joins with recursive tuples

  #15402 merged Jun 9, 2023

• Fix abstract and non-abstract variant error for prop.deleter

  #15395 merged Jun 8, 2023

• Improve stubtest error message

  #15398 merged Jun 8, 2023

• Fix stubtest crash in explicit init subclass

  #15399 merged Jun 8, 2023

• .git-blame-ignore-revs: exclude com2ann refactor

  #15400 merged Jun 8, 2023

• Fix crash when indexing TypedDict with empty key

  #15392 merged Jun 8, 2023

5 Pull requests opened by 4 people

• Revert "Add support for `attrs.fields` (#15021)"

  #15393 opened Jun 8, 2023

• Try tweaking `attrs.fields()`

  #15396 opened Jun 8, 2023

• Simplify suppression of spurious 'unused-ignore's

  #15419 opened Jun 12, 2023

• Support flexible TypedDict creation/update

  #15425 opened Jun 12, 2023

• Fix re-added file with errors in mypy daemon

  #15440 opened Jun 14, 2023

28 Issues closed by 8 people

• Using namespace package, editable mode installation and pyproject.toml makes mypy not find the package

  #15439 closed Jun 14, 2023

• Mypy v.990 crash checking function redefinition FuncDef

  #15436 closed Jun 14, 2023

• Improve error code linkability

  #15431 closed Jun 14, 2023

• `dmypy run` won't run, prints `"Restarting: configuration changed"` when `ignore_missing_imports = True` is configured

  #10709 closed Jun 14, 2023

• Strange issue when using full width numerals in TypedDict keys

  #14528 closed Jun 14, 2023

• Inconsistent type checking with property and Optional type

  #15424 closed Jun 12, 2023

• dataclass initvar with the same name as attribute gives error

  #15423 closed Jun 12, 2023

• Details about inner implementation of mypy type system

  #15418 closed Jun 12, 2023

• Warn Return Any now applies to small lambdas

  #9656 closed Jun 11, 2023

• Adjusting the signature of a function on the basis of caller types in plugin

  #10216 closed Jun 11, 2023

• Let function signature hook have context of caller

  #14845 closed Jun 11, 2023

• Returning Any from function declared to return object

  #9590 closed Jun 11, 2023

• (🎁) Report when generic base class specified multiple times with incompatible types

  #15348 closed Jun 10, 2023

• Non-overlapping comparison with Dict and MutableMapping subclass

  #10275 closed Jun 10, 2023

• KeyError: '_typeshed' crash in dmypy run

  #15319 closed Jun 9, 2023

• Mypy 1.3.0 crashes when using dictionary unpacking

  #15246 closed Jun 9, 2023

• Setting 'item' attribute as an instance created earlier leads to an internal error

  #15380 closed Jun 9, 2023

• Subclass of Generic containing Any doesn't work with TypeVar

  #11949 closed Jun 9, 2023

• 'break' in nested function causes an internal error

  #15378 closed Jun 9, 2023

• Segfault/RecursionError when using tuple, one item literal and self-referencing type

  #15351 closed Jun 9, 2023

• Abstract Properties & `Overloaded method has both abstract and non-abstract variants`

  #4165 closed Jun 8, 2023

• Mypy and pyright don't agree about variance for Generic Protocol

  #15331 closed Jun 8, 2023

• `__init_subclass__` with `classmethod` raises IndexError in stubtest

  #15397 closed Jun 8, 2023

• How to interpret Mypy internal profiling?

  #15374 closed Jun 8, 2023

• Optional pydantic field set in constructor not detected

  #9666 closed Jun 8, 2023

• Stubtest cannot find module with stubs in separate directory

  #15394 closed Jun 8, 2023

• Accessing null key in TypedDict cause an internal error

  #15389 closed Jun 8, 2023

• Using an undefined variable in try branch leads to a blocking error

  #15391 closed Jun 8, 2023

16 Issues opened by 14 people

• `generics`: isinstance reports false positives and false negatives

  #15438 opened Jun 14, 2023

• Eager narrowing to `Literal` when possible

  #15434 opened Jun 14, 2023

• Specialize empty collections to Any as a fallback

  #15433 opened Jun 14, 2023

• --update-data should error when running in parallel

  #15427 opened Jun 13, 2023

• Match statement with tuple of union type fails

  #15426 opened Jun 13, 2023

• Mypy not reporting "undefined" variable.

  #15416 opened Jun 11, 2023

• Add a CITATION.cff

  #15415 opened Jun 11, 2023

• Ignore variables not present at runtime if in `if TYPE_CHECKING` statement in stub

  #15414 opened Jun 11, 2023

• Allow Callable with a TypeVarTuple in the middle

  #15412 opened Jun 10, 2023

• Fix type argument count check for Instances

  #15411 opened Jun 10, 2023

• Fix upper bound checks for generic classes with TypeVarTuple

  #15410 opened Jun 10, 2023

• mypyc crashes with ParamSpec

  #15409 opened Jun 10, 2023

• Misleading error message when incompatible return type and `iter`

  #15408 opened Jun 10, 2023

• Decorator doesn't preserve type

  #15406 opened Jun 9, 2023

• TypeGuard methods narrow objects to internal type representations `Self1` & `TypeVar2`

  #15401 opened Jun 9, 2023

• Duplicate arguments in a function definition blocks the checking

  #15390 opened Jun 8, 2023

27 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.

• Mypy 1.4 Release Planning

  #15372 commented on Jun 12, 2023 • 9 new comments

• Consistently avoid type-checking unreachable code

  #15386 commented on Jun 12, 2023 • 5 new comments

• Abstract settable properties are not fully supported

  #13649 commented on Jun 8, 2023 • 2 new comments

• Maximum recursion depth when using ParamSpec/Concatenate

  #15388 commented on Jun 9, 2023 • 2 new comments

• Add signature for dataclasses.replace

  #14849 commented on Jun 13, 2023 • 2 new comments

• Migrate checkstrformat to use `ErrorMessage` class

  #15117 commented on Jun 12, 2023 • 2 new comments

• Foundations for non-linear solver and polymorphic application

  #15287 commented on Jun 14, 2023 • 2 new comments

• Fix overloading with a typevar missing

  #15320 commented on Jun 14, 2023 • 2 new comments

• Check tuples of abstract types

  #15366 commented on Jun 12, 2023 • 2 new comments

• Argument incompatibility not detected with multiple generic base classes

  #6184 commented on Jun 11, 2023 • 1 new comment

• TypeGuard typechecking on `filter` is too strict

  #12682 commented on Jun 11, 2023 • 1 new comment

• Announcement issue for plugin API changes

  #6617 commented on Jun 11, 2023 • 1 new comment

• (🐞) Inconsistent reachability depending if module level or not

  #12409 commented on Jun 12, 2023 • 1 new comment

• MyPy Reporting problems in dependencies (site-packages)

  #12162 commented on Jun 13, 2023 • 1 new comment

• Add static links for error codes

  #7186 commented on Jun 14, 2023 • 1 new comment

• (🐞) 1.2 regression invalid error and bad message with `Concatenate` return value

  #15086 commented on Jun 14, 2023 • 1 new comment

• Experiment: remove bytearray -> bytes promotion

  #12661 commented on Jun 14, 2023 • 1 new comment

• Use error subcodes to differentiate import errors

  #14740 commented on Jun 14, 2023 • 1 new comment

• Update the cheatsheet for functions and keyword argument typing

  #15163 commented on Jun 8, 2023 • 1 new comment

• Explicit decorated __new__, __class_getitem__ and __init_subclass__

  #15353 commented on Jun 9, 2023 • 1 new comment

• Narrow TypeVar to bounded TypeVar

  #15377 commented on Jun 12, 2023 • 1 new comment

• Incorrect type narrowing on union of `TypedDict`

  #12098 commented on Jun 9, 2023 • 0 new comments

• @final(TypedDict).get() with unknown key returns object instead of None

  #12143 commented on Jun 9, 2023 • 0 new comments

• TypeVar with bound union fails to narrow type

  #13896 commented on Jun 9, 2023 • 0 new comments

• Improve multiline reporting

  #15273 commented on Jun 12, 2023 • 0 new comments

• Improve handling of attribute access on class objects

  #14988 commented on Jun 11, 2023 • 0 new comments

• Reconsider constraints involving parameter specifications

  #15272 commented on Jun 14, 2023 • 0 new comments