# Example of a simple event-driven program# CodeSkulptor GUI moduleimport simplegui# Event handlerdef tick():    print "tick!"# Register handlertimer = simplegui.create_timer(1000, tick)# Start timertimer.start()

# SimpleGUI program template# Import the moduleimport simplegui# Define global variables (program state)counter = 0# Define "helper" functionsdef increment():    global counter    counter = counter + 1    # Define event handler functionsdef tick():    increment()    print counterdef buttonpress():    global counter    counter = 0    # Create a frameframe = simplegui.create_frame("SimpleGUI Test", 100, 100)frame.add_button("Click me!", buttonpress)# Register event handlerstimer = simplegui.create_timer(1000, tick)# Start frame and timersframe.start()timer.start()

# calculator with all buttonsimport simplegui# intialize globalsstore = 0operand = 0# event handlers for calculator with a store and operanddef output():    """prints contents of store and operand"""    print "Store = ", store    print "Operand = ", operand    print ""    def swap():    """ swap contents of store and operand"""    global store, operand    store, operand = operand, store    output()    def add():    """ add operand to store"""    global store    store = store + operand    output()def sub():    """ subtract operand from store"""    global store    store = store - operand    output()def mult():    """ multiply store by operand"""    global store    store = store * operand    output()def div():    """ divide store by operand"""    global store    store = store / operand    output()def enter(t):    """ enter a new operand"""    global operand    operand = int(t)    output()    # create framef = simplegui.create_frame("Calculator",300,300)# register event handlers and create control elementsf.add_button("Print", output, 100)f.add_button("Swap", swap, 100)f.add_button("Add", add, 100)f.add_button("Sub", sub, 100)f.add_button("Mult", mult, 100)f.add_button("Div", div, 100)f.add_input("Enter", enter, 100)# get frame rollingf.start()