[issue46981] Empty typing.Tuple

[Guido van Rossum]

Guido van Rossum <guido at python.org> added the comment:

Alas, I have no idea. I don't even recall what copy_with() is for (it was apparently introduced in 3.7). Possibly vopy_with() is wrong here? I imaging some of this has to do with the special casing needed so that repr() of an empty Tuple type doesn't print "Tuple[]" (which IIRC it did, long ago).

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<https://bugs.python.org/issue46981>
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