[Python-ideas] Re: Optimize out unused variables

09.04.20 03:46, Henk-Jaap Wagenaar пише:

I like the idea of formalizing "unused variables".

How about having a syntax for it? Allowing a "." instead of an identifier to signify this behaviour [reusing Serhiy's examples]:

head, ., rest = path.partition('/') first, second, *. = line.split() for . in range(10): ... [k for k, . in pairs]

Potentially for unpacking one could use nothing, e.g.

first, second, * = line.split()

Changing the syntax has much more high bar that implementing a transparent optimization. We should have very good evidences that this will help significant part of programs.