[docs] [issue37814] typing module: empty tuple syntax is undocumented

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

What is better, Tuple[()] or Literal[()]?

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37814>
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