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Add support for using ellipsis as last argument to Concatenate #5715

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erictraut opened this issue Aug 14, 2023 · 1 comment
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Add support for using ellipsis as last argument to Concatenate #5715

erictraut opened this issue Aug 14, 2023 · 1 comment
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addressed in next version Issue is fixed and will appear in next published version enhancement request New feature or request

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@erictraut
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PEP 612 was clear that the last type argument to Concatenate needs to be a ParamSpec, but this was amended recently. Now an ellipsis can also be used in this spot.

This relates to mypy issue python/mypy#14656.
@erictraut erictraut added the enhancement request New feature or request label Aug 14, 2023
erictraut pushed a commit that referenced this issue Aug 15, 2023
@msfterictraut
Added support for ... in the last type argument of Concatenate. A…
a8bc692 
…fter much discussion (see python/cpython#30969), it has been decided to support this even though a strict reading of PEP 612 seems to exclude it. This addresses #5715.
@erictraut erictraut added the addressed in next version Issue is fixed and will appear in next published version label Aug 15, 2023
@erictraut
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This is addressed in pyright 1.1.323, which I just published. It will also be included in a future release of pylance.

@tmke8 tmke8 mentioned this issue Aug 18, 2023
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