[Python-ideas] PEP 443 - multiple types registered

[João Bernardo]

> fun.register() does return the decorated function. This is why the
example above works. @singledispatch returns a compatible wrapper, which is
analogous to what @lru_cache and countless other decorators do. Is there
something I am missing
> here?
> Thanks for your feedback!

Copied from the PEP text:

    The register() attribute returns the *undecorated *function. This
enables decorator stacking, pickling, as well as creating unit tests for
each variant independently:

It's not big deal, just not common
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