On Mon, Jun 13, 2022 at 07:41:12AM -0400, Todd wrote:
> This has been proposed many times. You can check the mailing list history.
> Such proposals have been even less popular then PEP 671, since it requires
> a new keyword, which is generally avoided at nearly all costs,
Now that Python is using a PEG parser, adding a soft keyword is no big
deal. We could use a named keyword:
def spam(arg = defer default_expression):
pass
without affecting code that used "defer" as a variable or function name.
We could even write:
def spam(defer = defer defer()): ...
where the same word "defer" refers to a parameter, a soft keyword, and a
function call, all in the same function signature. Needless to say one
should not make a habit of this. But it would be allowed.
--
Steve
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