Ivan Levkivskyi <[email protected]> added the comment:
TBH, I don't like this idea. Consider this situation:
@singledispatch
def what(x: Iterable) -> None:
print('general case')
@what.register
def _(x: Sequence[int]) -> None:
print('special case')
what(['is', 'going', 'on']) # special case?
Even if you put in the docs that variables are erased etc. people will assume
type arguments mean something unless rejected by `singledispatch`. The
behaviour you propose can cause confusion.
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nosy: +lukasz.langa
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<https://bugs.python.org/issue34499>
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