#!/usr/bin/env pythonreeks = raw_input()zet = ''for letter in reeks: if letter == '.': zet = '' if letter != ' ' and letter != '.': zet = zet + letter if letter == " " and zet != '': zetten.append(zet) zet = ''zetten.append(zet)# test of de code klopt.for a in zetten: print a
File "Chess.py", line 11, in <module> zetten.append(zet)NameError: name 'zetten' is not defined
zetten = []