t-suffixed-type-alias (PYI043)

Derived from the flake8-pyi linter.

What it does

Checks for private type alias definitions suffixed with 'T'.

Why is this bad?

It's conventional to use the 'T' suffix for type variables; the use of such a suffix implies that the object is a TypeVar.

Adding the 'T' suffix to a non-TypeVar, it can be misleading and should be avoided.

Example

from typing import TypeAlias

_MyTypeT: TypeAlias = int

Use instead:

from typing import TypeAlias

_MyType: TypeAlias = int

References

• PEP 484: Type Aliases