Discussions

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  Proposal: KeyType and ElementType for TypedDicts (also, Map)

  tmke8 started Jun 16, 2023 in General

  

  

  

  

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  What is the idiomatic way of reusing key/values of TypedDict when total=False and True is needed?

  andresdelfino asked Jan 15, 2026 in Q&A · Answered

  

  

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  Type hint for attribute that might not exist

  cjw296 asked Jan 23, 2025 in Q&A · Unanswered

  

  

  

  

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  Returing generic type from indirect factory methods?

  pmhahn asked Jan 26, 2026 in Q&A · Unanswered

  

  

  

  

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  Immutable Sequence of float with length 3 as argument

  RubendeBruin started Jan 28, 2026 in General

  

  

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  @overload with multiple Generic[Any]

  randolf-scholz asked Jan 23, 2026 in Q&A · Unanswered

  

  

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  Should type checkers trust assert statements with mutable values?

  randolf-scholz started Jan 21, 2026 in General

  

  

  

  

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  Typing for a MutableMapping that contains specific key-value pairs

  dmi-dmi-dmi asked Jul 22, 2022 in Q&A · Unanswered

  

  

  

  

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  Clarifying appropriate use cases for Literal types in the guides

  u-harshitha007 started Jan 11, 2026 in General

  

  

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  Proposal: Mapped Types

  RichardDRJ started Jan 8, 2026 in General

  

  

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  Proposal: Trait for strict, non-widening type bounds (solving LSP issues in binary ops)

  kamalfarahani started Jan 2, 2026 in General

  

  

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  Clarification on Literal subtype behavior with arithmetic operations.

  u-harshitha007 asked Dec 14, 2025 in Q&A · Unanswered

  

  

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  In overloads, why is the implementation return type allowed to be broader than the overload return types?

  bzoracler started Dec 12, 2025 in General

  

  

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  is it intended behavior that an attribute shows up in __annotations__ if it is later redefined by a function?

  zzzeek asked Dec 9, 2025 in Q&A · Unanswered

  

  

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  How to use functools.wraps with method decorators

  sfc-gh-bchinn asked Nov 25, 2025 in Q&A · Unanswered

  

  

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  Reasons for not allowing generics in ClassVar?

  treykeown started Jul 1, 2023 in General

  

  

  

  

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  What does "set of potential runtime values" mean in the context of fully static types.

  doeblerh asked Nov 5, 2025 in Q&A · Answered

  

  

  

  

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  Widening generic types when calling methods in context.

  randolf-scholz asked Oct 25, 2025 in Q&A · Unanswered

  

  

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  Why does a dictionary union cause a type checking failure?

  dsotirho-ucsc asked Oct 17, 2025 in Q&A · Unanswered

  

  

  

  

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  Does mypy recognize classes' generic types for 3.12 syntax?

  mtsokol asked Sep 28, 2025 in Q&A · Answered

  

  

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  Does assert_type is supposed to work with Protocol?

  rayansostenes asked Jul 24, 2024 in Q&A · Answered

  

  

  

  

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  problems implementing overloads on some flexible class methods

  cjw296 asked Jul 8, 2025 in Q&A · Unanswered

  

  

  

  

  16
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  Annotating the decorator with arguments that works for both sync/async functions

  Galtozzy asked Aug 23, 2024 in Q&A · Answered

  

  

  

  

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  Is there a way to parametrize typing.Annotateds metadata?

  MilanStaffehl asked Jun 10, 2025 in Q&A · Unanswered

  

  

  

  

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  Proposal: Support tuple[T, N] syntax for fixed-length homogeneous tuples

  exprator-python started Aug 11, 2025 in Polls

  

  

  

  

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