On Jun 23, 2020, at 12:27, Rob Cliffe via Python-Dev <[email protected]> wrote: > > On 23/06/2020 17:01, Guido van Rossum wrote: >> >> You can combine several literals in a single pattern using `|` ("or"): >> >> ```py >> case 401|403|404: >> return "Not allowed" > The PEP is great, but this strikes me as horribly confusing, given that > 401|403|404 is already legal syntax. > IIUC any legal expression can come between `case` and `:`, but expressions > that contain `|` at their outermost level are interpreted differently than > from in other contexts. > Presumably adding parentheses: > case (401|403|404): > would make it equivalent to > case 407: > > Is a separator (other than whitespace) actually needed? Can the parser cope > with > case 401 403 404:
Maybe the PEP could support this syntax: case in 401, 403, 404: That seems like it would be both unambiguous and semantically obvious. Cheers, -Barry
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