my edit included

gistfile1.py

import random
import sys

def main():
	# 1. generate a random number within the range
	#    determined by the user
	guessUpperLimit = int(raw_input("Enter the upper limit for the target number: "))
	targetInt = random.randint(0, guessUpperLimit)
	print "Okay, I've got my number!"
	
	# 2. Allow the user to guess the target number,
	#    returning "Too small", "Perfect!" or "Too large",
	#    depending on their relationship
	userGuess(targetInt, guessUpperLimit)
	
	# 3. Ask the user if they would like to play again
	userPlayAgainOrNot()
	
def userGuess(targetInt, guessUpperLimit):
	guessInt = input("Enter a guess (an integer between 0 and %d): " %guessUpperLimit)
	if guessInt == targetInt:
		return "Perfect!"
	else:
		if guessInt > targetInt:
			print "Too large! Try again!"
			userGuess(targetInt, guessUpperLimit)
		elif guessInt < targetInt:
			print "Too small! Try again!"
			userGuess(targetInt, guessUpperLimit)
			
def userPlayAgainOrNot():
	tryAgain = raw_input("Would you like to try again? (y/n) ")
	if tryAgain == "y":
		main()
	elif tryAgain == "n":
		print "Thanks for playing!"
		sys.exit(0)
	else:
		print "I'm sorry. I didn't get that."
		userPlayAgainOrNot()
		
main()