diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst index 0de380551c9fb4..e82006caf7e796 100644 --- a/Doc/library/typing.rst +++ b/Doc/library/typing.rst @@ -2337,7 +2337,7 @@ Functions and decorators .. function:: assert_never(arg, /) - Assert to the type checker that a line of code is unreachable. + Ask a static type checker to confirm that a line of code is unreachable. Example:: @@ -2358,7 +2358,7 @@ Functions and decorators reachable, it will emit an error. For example, if the type annotation for ``arg`` was instead ``int | str | float``, the type checker would emit an error pointing out that ``unreachable`` is of type :class:`float`. - For a call to ``assert_never`` to succeed, the inferred type of + For a call to ``assert_never`` to pass type checking, the inferred type of the argument passed in must be the bottom type, :data:`Never`, and nothing else.