Add typing to pyplot.show() to avoid errors with mypy --strict. #26940
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Add type signature for
pyplot.show
.PR summary
This is done to prevent errors when
mypy --strict
is invoked on client code containingplt.show()
.Closes #26919.
The signature indicates a return type of
None
, which matches the matplotlib documentation, even though the implementation could actually return non-None if the back-end function does.PR checklist