118         self.next_state = None
131     def add_transition (self, input_symbol, state, action=None, next_state=None):  argument
144         if next_state is None:
145             next_state = state
146         self.state_transitions[(input_symbol, state)] = (action, next_state)
148     def add_transition_list (self, list_input_symbols, state, action=None, next_state=None):  argument
159         if next_state is None:
160             next_state = state
162             self.add_transition (input_symbol, state, action, next_state)
164     def add_transition_any (self, state, action=None, next_state=None):  argument
178         if next_state is None:
179             next_state = state
180         self.state_transitions_any [state] = (action, next_state)
182     def set_default_transition (self, action, next_state):  argument
193         self.default_transition = (action, next_state)
239         (self.action, self.next_state) = self.get_transition (self.input_symbol, self.current_state)
242         self.current_state = self.next_state
243         self.next_state = None