From Newsgroup: comp.lang.python
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On 1/18/25 8:52 AM, Ian Pilcher wrote:
(And even that wouldn't really be correct, if it worked, because it
doesn't express the fact that the arguments of the two Callables are the same. I believe that ParamSpecs are supposed to address this, but there doesn't seem to be any way to use a ParamSpec when one or more of the parameter types is known.
I think that I figured it out.
__P = typing.ParamSpec('__P')
@staticmethod
def _check_eof(
method: collections.abc.Callable[
typing.Concatenate[BufferScanner, __P], None
]
) -> (
collections.abc.Callable[
typing.Concatenate[BufferScanner, __P], bool
]
):
...
Mypy is happy, and it catches me if I try to use the decorator on some-
thing that isn't a method of BufferScanner (or some other callable that
takes an instance of BufferScanner as its first positional argument).
--
========================================================================
If your user interface is intuitive in retrospect ... it isn't intuitive ========================================================================
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