Insights: python/mypy

14 Pull requests merged by 6 people

• Stubtest: Improve heuristics for determining whether global-namespace names are imported

  #14270 merged Dec 22, 2022

• subtypes: fast path for Union/Union subtype check

  #14277 merged Dec 28, 2022

• Speed up the implementation of hasattr() checks

  #14333 merged Dec 26, 2022

• Avoid slow error message logic if errors not shown to user

  #14336 merged Dec 26, 2022

• Improve searchability for module level type ignore errors

  #14342 merged Dec 25, 2022

• [undefined vars] do not double report errors in class defs

  #14350 merged Dec 28, 2022

• [undefined vars] fix per-module error code override bug

  #14351 merged Dec 28, 2022

• mypy_primer_comment: Resolve node.js 12 actions deprecation warning

  #14352 merged Dec 28, 2022

• Micro-optimization: avoid Bogus[int] types that cause needless boxing

  #14354 merged Dec 28, 2022

• Require setuptools>=65.5.1

  #14355 merged Dec 28, 2022

• Optimization: Enable always defined attributes in Type subclasses

  #14356 merged Dec 28, 2022

• Optimization: Remove expensive context manager in type analyzer

  #14357 merged Dec 28, 2022

• Optimization: Avoid a few uses of contextmanagers in semantic analyzer

  #14360 merged Dec 28, 2022

• [mypyc] Simplify union types

  #14363 merged Dec 28, 2022

5 Pull requests opened by 3 people

• [mypyc] Improve error message for multiple inheritance.

  #14344 opened Dec 25, 2022

• Stubtest: clean up the `_belongs_to_runtime` function

  #14361 opened Dec 28, 2022

• Stubtest: Improve error message for `__all__`-related errors

  #14362 opened Dec 28, 2022

• [mypyc] Fixes to union simplification

  #14364 opened Dec 28, 2022

• A few miscellaneous micro-optimizations

  #14366 opened Dec 28, 2022

7 Issues closed by 4 people

• mypy 0.982 run 15 minutes (previous version needs only one minute)

  #13821 closed Dec 28, 2022

• Track mypy performance changes automatically

  #14187 closed Dec 28, 2022

• "Make mypy more positive #7368" breaks CI/CD workflow

  #14349 closed Dec 27, 2022

• Add an explanation of what error mypy produces when importing from a module with a top-line comment `# type: ignore`

  #14340 closed Dec 25, 2022

• dmypy deameon crash after switching branches

  #14234 closed Dec 24, 2022

• False positive error when using a NewType as a defaultdict's default_factory

  #14339 closed Dec 22, 2022

• Help

  #14341 closed Dec 22, 2022

11 Issues opened by 10 people

• warn unused ignores flag does not respect TYPE_CHECKING

  #14365 opened Dec 28, 2022

• Reuse compiled baseline in perf_compare

  #14359 opened Dec 28, 2022

• Improve precision of mypy performance tracking

  #14358 opened Dec 28, 2022

• If .mypy_cache exists "AttributeError: attribute 'mro' of 'TypeInfo' undefined"

  #14353 opened Dec 28, 2022

• mypy sometimes emits fewer errors when running on multiple files at once

  #14348 opened Dec 26, 2022

• ParamSpec + Generics false positive

  #14347 opened Dec 26, 2022

• Allow for specifying default types based on name

  #14346 opened Dec 26, 2022

• Incorrect asynchronous comprehension cause an internal error

  #14345 opened Dec 26, 2022

• Deny free type variables in instance attributes coming from constructor args

  #14343 opened Dec 25, 2022

• Combining an `or` and `dict.get` results in the wrong inferred type.

  #14338 opened Dec 22, 2022

• Callables like `operator.call` produce `arg-type` error with generic functions

  #14337 opened Dec 22, 2022

12 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.

• Enable use-before-def error code by default

  #14166 commented on Dec 27, 2022 • 6 new comments

• ✨ Added new Error to TypedDict

  #14225 commented on Dec 24, 2022 • 4 new comments

• Release 1.0 planning

  #13685 commented on Dec 24, 2022 • 2 new comments

• Associated types on generics

  #7790 commented on Dec 22, 2022 • 1 new comment

• False positive on re.compile as attrs converter

  #5313 commented on Dec 22, 2022 • 1 new comment

• [Feature Request] Provide an API to get the type of the expressions in the AST

  #4868 commented on Dec 24, 2022 • 1 new comment

• Support both warnings and errors

  #962 commented on Dec 26, 2022 • 1 new comment

• Tuple-like Sequence

  #8441 commented on Dec 27, 2022 • 1 new comment

• Fixes no error thrown for Final fields declared with init=False and not assigned inside __init__

  #14285 commented on Dec 22, 2022 • 1 new comment

• AttributeError: attribute '_fullname' of 'TypeInfo' undefined

  #14296 commented on Dec 24, 2022 • 0 new comments

• Cannot silence "unused 'type: ignore'" in version specific code

  #8823 commented on Dec 28, 2022 • 0 new comments

• `--strict` is too strict to be useful

  #7767 commented on Dec 28, 2022 • 0 new comments