python-typing

Python static typing: descriptors with overloads for different class vs instance attribute types

Oct. 31, 23:00

Python typing: map raw to processed types with generic Protocol, not dicts, for precise return types

Oct. 30, 09:00

Why mypy ignores membership tests for Literal narrowing in Python (and what to do instead)

Oct. 26, 01:00

Python Type Aliases from Class Annotations: Fixing AttributeError for Instance Fields

Oct. 20, 11:00

mypy 1.16, Python 3.11: union-type list concatenation passes as expression but fails on return

Oct. 20, 03:00

Fixing Python Generic Union Bounds: Pylance Errors and Safe Constrained Generics (Pyright, mypy)

Oct. 19, 03:00

PEP 8 on Python Annotations: Spaces Around Defaults, Unions, and Optional in Parameters

Oct. 19, 01:00

Python sum(), _Addable and SupportsAdd explained: why strings fail, typeshed stubs, real fixes

Oct. 17, 07:00

Fixing MyPy's Enum Exhaustiveness with assert_never: Instance vs Class Members and Workarounds

Oct. 17, 01:00

Python typing: Why dict[str, str] fails for Mapping[str | int, str] and how to fix it

Oct. 8, 05:00

Type-Safe SQLAlchemy ORM Queries with mypy: ClassVar[Mapped[int]] for Class-Level id

Oct. 7, 05:00

Mypy Exhaustiveness with Pattern Matching Fails for TypeVar-Bound BaseModel: Causes and Fixes

Oct. 5, 03:00

Fix Pylance type-hint warning in SQLAlchemy FastAPI session dependency: use Generator[Session]

Oct. 3, 21:00

Fixing Python DI: NewType with parameterized generics tuple[str,str] in injector via TYPE_CHECKING

Oct. 2, 03:00

mypy issubclass() won't narrow Any: Python type narrowing explained and fixes with isinstance

Oct. 1, 05:00

Fixing PyRight reportOptionalMemberAccess in Django ModelForm.clean: Optional return and .get

Sep. 30, 17:00

Python typing: why list invariance vs Sequence covariance breaks append, and how inference works

Sep. 28, 13:00

Python typing: enforce precise axis parameters with Literal and TypeAlias, not broad Unions

Sep. 28, 11:00

Typing functools.partial with dataclasses: when annotations break Pyright/Mypy inference

Sep. 27, 21:00

Python 3.13 typing generics: use top materialization to accept any instance (object/Never/Any)

Sep. 27, 17:00

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