On Mar 13, 2:36 pm, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote: > Hi, > > I am surprised that it took me so long to bloody my nose on this one. > > It must be well known - and I would like to find out how well known. > > So here is a CLOSED BOOK multiple choice question - no RTFM, > no playing at the interactive prompt: > > Given the following three lines of code at the interactive prompt: > > foo = [1,2,3,4] > x = foo.append(5) > print x > > What will be the output (choose one): > > 1) [1,2,3,4] > 2) [1,2,3,4,5] > 3) That famous picture of Albert Einstein sticking out his tongue > 4) Nothing - no output > 5) None of the above > > I undertake to summarise answers posted to complete this "survey". > > - Hendrik
I think I'll choose 3. Well, no, I suppose the correct behavior _should_ be undefined (i.e. what it returns is an implementation details that should not be relied on). The fact that it returns None is just a "coincidence" that happens to happen every time you tested it (you can't prove by ignorance) -- http://mail.python.org/mailman/listinfo/python-list
