[pansa2]

How would the parser know that’s a function definition and not a function call?

[dependenttypes]

by the :

[pansa2]

That's too late. The parser needs to know whether it's looking at a definition or a call before that - for example, to know whether to parse "args" as a `parameters` or an `arglist` [0].

[0] https://docs.python.org/3/reference/grammar.html