teext – typing extensions extensions

Package which provides useful types.

Documentation

Examples

Value-constraint types without runtime overhead

These types are most useful in conjunction with static type checkers like mypy.

import teext as tx

def f(x: tx.PositiveInt) -> None:
    print(x)

a = 5
assert tx.is_positive_int(a)
f(a)  # OK
f(7)  # works at runtime but mypy gives error

assert tx.is_positive_int(-3)  # AssertionError