It appears that you've defined "levenshtein_automata" as a method on your DFA class, but you did not reference the class instance in your call by prefixing "self". Instead, you're trying to call a globally defined function named "levenshtein_automata" -- which because it is not defined, is throwing a NameError.
Try changing line 145 to the below and see if that resolves the issue: lev = self.levenshtein_automata(word, k).to_dfa() ######### line 145 ##########
_______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor