On Wed, Sep 2, 2015 at 11:42 AM, Terry Reedy <tjre...@udel.edu> wrote: > On 9/2/2015 6:01 AM, Antoon Pardon wrote: >> >> >>>>> a = [1, 2, 3, 4, 5] >>>>> b = 1 >>>>> b, a[b] = a[b], b >>>>> a >> >> [1, 2, 1, 4, 5] >>>>> >>>>> a = [1, 2, 3, 4, 5] >>>>> b = 1 >>>>> a[b], b = b, a[b] >>>>> a >> >> [1, 1, 3, 4, 5] >> >> I think I understand how it gets these results >> but I'm not really happy with them. I think python >> should give the second result in both cases. > > > I do not want the choice taken away from me.
I do. I think the former behavior is surprising, and that relying on it would result in confusing, hard-to-read code. If you really want the former, you can easily reproduce it with: temp = a[b] b, a[temp] = temp, b -- https://mail.python.org/mailman/listinfo/python-list