[issue35207] Disallow expressions like (a) = 42
Stefan Krah
report at bugs.python.org
Mon Nov 12 08:31:43 EST 2018
Stefan Krah <stefan at bytereef.org> added the comment:
I just want to add one more voice for allowing the status quo:
C, OCaml, SML, Haskell allow the assignment, Ruby disallows it.
The ML family must allow it, since "let (x) = 10" is pattern matching
under the hood, and (10) = 10.
In C (gcc, clang at least, I didn't check the standard) it may be convenience.
Python's assignment unpacking is similar to pattern matching, so
while the construct is surprising at first, I think it's the right
thing to do.
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nosy: +skrah
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