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On 04/21/2015 04:50 AM, Tal Einat wrote:
As for the default set of accepted types for various convertors, if we
could choose any syntax we liked, something like "accept=+{NoneType}"
would be much better IMO.
In theory Argument Clinic could use any syntax it likes. In practice, under the covers we tease out one or two bits of non-Python syntax, then run ast.parse over it. Saved us a lot of work.
"s: accept={str,NoneType}" is a legal Python parameter declaration; "s: accept+={NoneType}" is not. If I could figure out a clean way to hack in support for += I'll support it. Otherwise you'll be forced to spell it out.
/arry