Nick Coghlan wrote:
On Wed, Jun 1, 2011 at 2:52 PM, Carl M. Johnson <cmjohnson.mailinglist@gmail.com> wrote:
We all know that the following code won't work because of UnboundLocalError and that to get around it, one needs to use nonlocal:
There's no fundamental reason this couldn't change, but actually changing it simply isn't worth the hassle, so the status quo wins the stalemate.
I elaborated further on this point when the topic came up last year: http://mail.python.org/pipermail/python-ideas/2010-June/007448.html
Maybe I get to learn something new about Python today. Several times in that thread it was stated that --> a += 1 is a shortcut for --> a.__iadd__(1) It seems to me that this is an implementation detail, and that the actual "longcut" is --> a = a + 1 Likewise, the shortcut of --> some_list[func_with_side_effects()] += some_value is the same as --> index = func_with_side_effects() --> some_list[index] = some_list[index] + some_value Is my understanding correct? ~Ethan~