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Incorrect docs for typing.Concatenate #142965
Description
Documentation
https://docs.python.org/3.14/library/typing.html#typing.Concatenate says:
Concatenate is currently only valid when used as the first argument to a Callable.
but this is obviously untrue. For example, PEP 612 says:
def f(x: X[int, Concatenate[int, P_2]]) -> str: ... # Accepted
Activity
johnslavik commentedon Dec 20, 2025
I thought it would be good to first specify what are the exact valid use locations of
typing.Concatenatein the typing spec.Please see python/typing#2140! :-)
pythongh-142965: Fix Concatenate documentation to reflect valid use c…
gh-142965: Fix Concatenate documentation to reflect valid use cases (#…
[3.13] gh-142965: Fix Concatenate documentation to reflect valid use …
[3.14] gh-142965: Fix Concatenate documentation to reflect valid use …
pythongh-142965: Fix Concatenate documentation to reflect valid use c…