[Python-Dev] SyntaxError: can't assign to function call (original) (raw)

"Martin v. Löwis" martin at v.loewis.de
Fri Aug 11 22:10:20 CEST 2006

Phillip J. Eby schrieb:

Actually, this isn't as hard as you're implying. In at least the "compiler.ast" package, such an operation would be represented as a CallFunc node as the child of an Assign node. Wrapping the call node's main child expression in a Getattr for setcall would then effect the relatively simple AST transformation required.

Well, you are experienced with that stuff, and would be one of the people who could rip apart a specification attempt. There are just many details to it, for example, what is the evaluation order when I write

f(g()) = h()

Or what about chained assignments

a = b() = c()

Is the return value of setcall used or not?

What about augmented assignments?

Any specific question that somebody asks gets an easy (although perhaps arbitrary) answer. Still, I guess many people would be surprised how large the specification of a seemingly simple feature will be.

Regards, Martin

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