[Tutor] Return to main menu

[K J]

Well this is the little program that I have created it is my first one and it works just
fine from what I have tested. Only problem I have with it is that, lets say you enter
1 at the prompt it will load the add.py modual. however when it comes to the end
of the modual it terminats. How would I go about making it so that it will return to 
the menu and ask for another choice.

Kevin

print """
0 Exit
1 Add
2 Subtract

"""
number = raw_input("Enter a number: ")

while 1:
        try:
            number = int(number)
            break
        except ValueError:
            print "That is not an option"
            number = raw_input("Enter a number: ")
if int(number) == 1:
        import add
if int(number) == 2:
        import subtract
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