[Python-Dev] Re: PEP 642: Constraint Pattern Syntax for Structural Pattern Matching

2020年11月02日 13:58:49 -0800

On 11/2/2020 1:42 PM, Guido van Rossum wrote:
But we feel that `case x, x` can easily be misunderstood as "a tuple of two equal values"
So what _is_ the syntax for "a tuple of two equal values" ?
case x, ?x: # comes to mind (not that it is in the PEP :))
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