[issue39993] Language Reference - Function definition parameter_list item definition not equivalent to implementation.

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

> Did I miss something?

Yep, what you are missing is that the rule is really:

(defparameter ("," defparameter)* "," "/" ["," [parameter_list_no_posonly]]) | (parameter_list_no_posonly)

which means that is either 

defparameter ("," defparameter)* "," "/" ["," [parameter_list_no_posonly]]

or

parameter_list_no_posonly

and for the def(a): pass case the corresponding rule is parameter_list_no_posonly (check the rest of the specification).

Do you think that adding these explicit parentheses would help with help making this more clear?

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nosy: +pablogsal

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39993>
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