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Type errors using (x, _, _) = (1, 2, "3") #1649
Description
It's a common pattern to use assignment to _ in code to ignore variables that aren't used, and mypy doesn't support that:
/home/tabbott/foo.py:2: error: Incompatible types in assignment (expression has type "str", variable has type "int")
In my real code the usage looks more like this:
for (email, _, _, _) in users:
...
Not sure whether the right answer is to change the code, but I think I'd flag this as an interesting case that may be somewhat common.
Activity
gvanrossum commentedon Jun 4, 2016
It's common enough to flag a few variable names as special as targets:
_,__, andunusedhave all been recommended at various times.JelleZijlstra commentedon Jul 1, 2017
This is a duplicate of #465.
ilevkivskyi commentedon Jul 1, 2017
Yes, it looks like this is a duplicate. I think it makes sense to only keep one of them open.