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Document typing.ForwardRef (GH-14216)

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Ivan Levkivskyi 2019-06-19 01:31:51 +01:00 committed by GitHub
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Doc/library/typing.rst
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@ -1001,6 +1001,13 @@ The module defines the following classes, functions and decorators:
.. versionadded:: 3.8
.. class:: ForwardRef
A class used for internal typing representation of string forward references.
For example, ``List["SomeClass"]`` is implicitly transformed into
``List[ForwardRef("SomeClass")]``. This class should not be instantiated by
a user, but may be used by introspection tools.
.. function:: NewType(typ)
A helper function to indicate a distinct types to a typechecker,