ReturnType

Generic type ReturnType and mypy checker plugin

Install

pip install return_type

add plugin to mypy.ini

[mypy]
plugins = return_type.mypy-plugin.py

Usage

import typing as t
from return_type import ReturnType

C = t.Callable[..., int]
RC = ReturnType[C]

assert RC = int
v1: RC = 1  # correct
v2: RC = 1.  # error