attr._make._Nothing Class Reference

Inheritance diagram for attr._make._Nothing:

Collaboration diagram for attr._make._Nothing:

Public Member Functions
	__repr__ (self)
	__bool__ (self)

Static Public Attributes
	NOTHING = enum.auto()

Detailed Description

Sentinel to indicate the lack of a value when `None` is ambiguous.

If extending attrs, you can use ``typing.Literal[NOTHING]`` to show
that a value may be ``NOTHING``.

.. versionchanged:: 21.1.0 ``bool(NOTHING)`` is now False.
.. versionchanged:: 22.2.0 ``NOTHING`` is now an ``enum.Enum`` variant.

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The documentation for this class was generated from the following file:

• docs/help/help-venv/lib/python3.12/site-packages/attr/_make.py