[Tutor] Need a suggestion

[DAVID BRALLIER]

This is a program from a link on the Python website, I added a little to it 
to make it a little more user friendly but the question is how do you load 
the data back in so it doesn't get amnesia every time you quit?
I feel I am close just need someone to push me over the edge.



# questor.py

# define some constants for future use

kQuestion = 'question'
kGuess = 'guess'
print "Welcome to my learning game."
print "Think of an animal or object in your head."
print "I will ask you yes or no questions, ready? Here we go!"

# define a function for asking yes/no questions
def yesno(prompt):
	ans = raw_input(prompt)
	return (ans[0]=='y' or ans[0]=='Y')

# define a node in the question tree (either question or guess)
class Qnode:

	# initialization method
	def __init__(self,guess):
		self.nodetype = kGuess
		self.desc = guess

	# get the question to ask
	def query(self):
		if (self.nodetype == kQuestion):
			return self.desc + " "
		elif (self.nodetype == kGuess):
			return "Is it a " + self.desc + "? "
		else:
			return "Error: invalid node type!"

	# return new node, given a boolean response
	def nextnode(self,answer):
		return self.nodes[answer]

	# turn a guess node into a question node and add new item
	# give a question, the new item, and the answer for that item
	def makeQuest( self, question, newitem, newanswer ):

		# create new nodes for the new answer and old answer
		newAnsNode = Qnode(newitem)
		oldAnsNode = Qnode(self.desc)

		# turn this node into a question node
		self.nodetype = kQuestion
		self.desc = question

		# assign the yes and no nodes appropriately
		self.nodes = {newanswer:newAnsNode, not newanswer:oldAnsNode}



def traverse(fromNode):
	# ask the question
	yes = yesno( fromNode.query() )

	# if this is a guess node, then did we get it right?
	if (fromNode.nodetype == kGuess):
		if (yes):
			print "I'm a genius!!!"
			return
		# if we didn't get it right, return the node
		return fromNode

	# if it's a question node, then ask another question
	return traverse( fromNode.nextnode(yes) )

def run():
	# start with a single guess node
	topNode = Qnode('python')

	done = 0
	while not done:
		# ask questions till we get to the end
		result = traverse( topNode )

		# if result is a node, we need to add a question
		if (result):
			item = raw_input("OK, what were you thinking of? ")
			print "Enter a question that distinguishes a",
			print item, "from a", result.desc + ":"
			q = raw_input()
			ans = yesno("What is the answer for " + item + "? ")
			result.makeQuest( q, item, ans )
			print "Got it."

		# repeat until done
		print
		done = not yesno("Do another? ")
	else:
		print "Thanks for playing"
		print "I'll play again whenever you are ready!!"
		print "To play again type: reload"






# immediate-mode commands, for drag-and-drop or execfile() execution
if __name__ == '__main__':
      run()
      print
      raw_input("press Return>")
#else:
      print "Module questor imported."
      print "To run, type: questor.run()"
      print "To reload after changes to the source, type: reload(questor)"

# end of questor.py



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