Ian Kelly <ian.g.ke...@gmail.com>: > In my view the second one is wrong. a += b should be understood as > being equivalent to a = a + b, but with the *possible* and by no means > guaranteed optimization that the operation may be performed in-place.
Some call it an optimization, others call it a side effect. Anyway, that's how it has been explicitly defined in the language specification so that's the reality whether one likes it or not. Marko -- https://mail.python.org/mailman/listinfo/python-list
