Guess the number game

import random
import simplegui

chance = 7
secret_number = 1

# helper function to start and restart the game
def new_game():        
    global secret_number
    secret_number = random.randint(0, 100)
         
# define event handlers for control panel
def range100():
    """store range to secret_number"""
    global secret_number
    secret_number = random.randrange(0, 101)    
   
def range1000():
    """store range to secret_number"""
    global secret_number,chance
    secret_number = random.randrange(0,1001)
    chance = 10
    
def input_guess(guess):
    """compare guess with secret number"""
    global chance,secret_number

    try: 
        guess = int(guess)
        chance -= 1

        if chance > 0:
            print "\nYour guess was", guess

            if (guess > secret_number):
                print "Lower!"
                print "Chances left:",chance
            elif(guess < secret_number):
                print "Higher!"
                print "Chances left:",chance
            else:
                print "\nCorrect!!!\n"
                print "You guessed it right!!!\nCorrect number was %s, you had %s chances left...\nChoose a New game. " %(secret_number, chance)
            
        else :
            print "\nTime's up, You Lost\nCorrect number was %s"%(secret_number)     
            print "Try again a new game."
            range100()
             
    except:
        print 'Input is not a number!!!\nTry Again!!!'

def end_game():
    """closes game"""
    f.stop()    
        
# create frame
f = simplegui.create_frame("Guess the number",250,250)

# register event handlers for control elements and start frame
f.add_button("Range is from 0 - 100",range100 ,150)
f.add_button("Range is from 0 - 1000",range1000 ,150)
f.add_input("Enter a number", input_guess, 100)
f.add_button('End Game', end_game, 70)


# call new_game 
f.start()