[Python-ideas] Null coalescing operators

Random832 random832 at fastmail.com
Sat Sep 19 08:55:13 CEST 2015

Guido van Rossum <guido at python.org> writes:
> Let me propose a (hyper?)generalization: it could be combined with any
> binary operation, e.g. "a?+b" would mean "None if a is None else a+b".

I'd have read it as "None if a is None or b is None else a+b". If you
want to only do it for one of the operands you should be explicit.

I'm not sure if I have a coherent argument for why this shouldn't apply
to ?[, though.

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