notgiven 0.0.3

Defines NotGiven and NOT_GIVEN

NotGiven and NOT_GIVEN

pip install notgiven

from notgiven import (
    NotGiven,
    NOT_GIVEN,
    is_given,
    is_not_given,
    is_given_guard,  # Only useful in 3.13+
    is_not_given_guard,  # Only useful in 3.13+
)

The details

• NOT_GIVEN, the only instance of NotGiven, is a constant, marked Final.
• NOT_GIVEN is falsy (bool(NOT_GIVEN) is always False)
• Cannot instantiate or subclass NotGiven
• Pickling/unpickling, copying, and deepcopying NOT_GIVEN all result in the same value.
• NOT_GIVEN has no slots, so attributes may not be set on it.
• NOT_GIVEN's string representation is "NOT_GIVEN"