"Hendrik van Rooyen" <[EMAIL PROTECTED]> writes: > 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): > 4) Nothing - no output
By Python convention, methods that mutate the object return None, and also stuff that returns None doesn't generate output at the interactive prompt. There is a similar situation with list.sort() which led to the introduction of the sorted() builtin. Lately I try to avoid mutation, e.g. by using a generator or listcomp instead of building up a list with .append() -- http://mail.python.org/mailman/listinfo/python-list
