Re: cell and row

Because you're inserting items into your existing list instead of a new list. What you probably mean is: b = [] for x in a: b.append(x) which creates a new list b that contains all elements whose length is greater than four. A better way to write this would be: b = [x for x in a if l

Re: cell and row

Doh, the first example should of cours be: b = [] for x in a: if len(x) > 4: b.append(x) -- http://mail.python.org/mailman/listinfo/python-list