a question about list as an element in a tuple

Marko Rauhamaa marko at pacujo.net
Wed Feb 19 09:54:39 CET 2014

Marko Rauhamaa <marko at pacujo.net>:

> operator.add(x, y) [...] leaves x and y intact and must return a new
> object.

Well, if the addition doesn't modify x, the method can of course return


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