parameters: (self, initial_state, memory=None)
docstring: This creates the FSM. You set the initial state here. The "memory"
          attribute is any object that you want to pass along to the action
          functions. It is not used by the FSM. For parsing you would typically
          pass a list to be used as a stack.
docstring_summary: This creates the FSM. You set the initial state here. The "memory"
          attribute is any object that you want to pass along to the action
          functions. It is not used by the FSM. For parsing you would typically
          pass a list to be used as a stack.
docstring_tokens: This creates the FSM . You set the initial state here . The memory attribute is any object that you want to pass along to the action functions . It is not used by the FSM . For parsing you would typically pass a list to be used as a stack .
function: def __init__(self, initial_state, memory=None):
  
          '''This creates the FSM. You set the initial state here. The "memory"
          attribute is any object that you want to pass along to the action
          functions. It is not used by the FSM. For parsing you would typically
          pass a list to be used as a stack. '''
  
          # Map (input_symbol, current_state) --> (action, next_state).
          self.state_transitions = {}
          # Map (current_state) --> (action, next_state).
          self.state_transitions_any = {}
          self.default_transition = None
  
          self.input_symbol = None
          self.initial_state = initial_state
          self.current_state = self.initial_state
          self.next_state = None
          self.action = None
          self.memory = memory
function_tokens: def __init__ ( self , initial_state , memory = None ) : # Map (input_symbol, current_state) --> (action, next_state). self . state_transitions = { } # Map (current_state) --> (action, next_state). self . state_transitions_any = { } self . default_transition = None self . input_symbol = None self . initial_state = initial_state self . current_state = self . initial_state self . next_state = None self . action = None self . memory = memory