Justin Ezequiel schrieb: >>>> a = list('asdfg') >>>> map(None, a[::2], a[1::2]) > [('a', 's'), ('d', 'f'), ('g', None)] >>>> a = list('asdfgh') >>>> map(None, a[::2], a[1::2]) > [('a', 's'), ('d', 'f'), ('g', 'h')] That's clever! Thanks! Chris