Hi, Given a = [1, 2]
a.extend(a) makes a = [1,2, 1,2] One might guess a.extend(a) would turn into an infinite loop. It turns out here Python first gets all the items of `a' and then append them to `a', so the infinite loop is avoided. My question is, is there any doc on the behavior of things like this? Another related example might be: a[:] = a Hopefully Python first gets all the items on the *right* side and then assigns them to the left. Regards. -- https://mail.python.org/mailman/listinfo/python-list
