Literal

Literal types tell exacting to check for value equality instead of types.

from typing import Literal

Literal["Hello", b"beep", 123, True]

There can be multiple Literal items.

Literal types perform exactly as intended in exacting.

Validator

The LiteralV ("Literal" validator) checks the equailty of the target values (the "OK" ones) and the provided value.

This validator loops through self.values and returns immediately once a match is found.

from exacting import LiteralV

va = LiteralV(["A", 1, True])

va.values # list[Any]

va.validate("A")  # Ok!
va.validate(1)  # Ok!
va.validate(True)  # Ok!
va.validate("B")  # ERROR