8000 Clarify what unparameterized Tuple means · Issue #284 · python/typing · GitHub
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Clarify what unparameterized Tuple means #284

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gvanrossum opened this issue Sep 26, 2016 · 2 comments
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Clarify what unparameterized Tuple means #284

gvanrossum opened this issue Sep 26, 2016 · 2 comments

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@gvanrossum
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Currently when you annotate something as Tuple, mypy interprets this as a 0-length tuple. I don't like this. PEP 484 is silent on the matter, but in analogy of List I'd like it to mean Tuple[Any, ...], which is also equivalent to tuple (lowercase 't').
@ilevkivskyi
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Absolutely +1 on this. I will be glad to make a PR to python/peps on this.

@gvanrossum
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OK, please go ahead with the PEP 484 PR. (I also couldn't find where it says that List means List[Any] -- it says something about subclassing without specifying parameters, but that's not relevant -- I'm just talking about using List in type annotations. That meaning is uncontroversial, but if it isn't said somewhere it still ought to be mentioned.

This was referenced Sep 26, 2016
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@ilevkivskyi ilevkivskyi mentioned this issue Sep 27, 2016
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gvanrossum pushed a commit to python/peps that referenced this issue Sep 27, 2016
@ilevkivskyi @gvanrossum
Clarify meaning of bare Tuple, etc. (#110)
5f30d8f 
Fixes python/typing#284
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