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PEP 634: fix error in definition of irrefutable pattern

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Guido van Rossum 2020-10-22 09:46:38 -07:00
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pep-0634.rst
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@ -159,7 +159,7 @@ Irrefutable case blocks
A pattern is considered irrefutable if we can prove from its syntax A pattern is considered irrefutable if we can prove from its syntax
alone that it will always succeed. In particular, capture patterns alone that it will always succeed. In particular, capture patterns
and wildcard patterns are irrefutable, and so are AS patterns whose and wildcard patterns are irrefutable, and so are AS patterns whose
right-hand side is irrefutable, OR patterns containing at least left-hand side is irrefutable, OR patterns containing at least
one irrefutable pattern, and parenthesized irrefutable patterns. one irrefutable pattern, and parenthesized irrefutable patterns.
A case block is considered irrefutable if it has no guard and its A case block is considered irrefutable if it has no guard and its