local variable 'juveniles' referenced before assignment

Newsgroups	comp.lang.python
Date	2016-01-13 04:23 -0800
Message-ID	<d668ec4e-509e-48a4-9be5-017077629c6c@googlegroups.com> (permalink)
Subject	local variable 'juveniles' referenced before assignment
From	Alan Robinson <arobinson@lordlawson.org.uk>

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def menu():
    option = int(input("Please select an option: \n 1: Set Generation 0 Values \n 2: View Generation 0 Values \n 3: Run Model \n 4: Print values"))

    if option == 1:
        juveniles,adults,seniles = setGen()
    elif option == 2:
        displayGen()
    elif option == 3:
        runModel(juveniles,adults,seniles)
    elif option == 4:
        print(juveniles,adults,seniles)
    menu()


def setGen():
    #enter number of juveniles
    juveniles = int(input("How many juveniles are in the total popluation?"))
    #enter number of adults
    adults = int(input("How many Adults are in the total popluation?"))
    #enter number of seniles
    seniles = int(input("How many Seniles are in the total popluation?"))
    #enter juvenilesenile survival rates
    return(juveniles,adults,seniles)
menu() 
when I go to print I get the above error I can't see a solution please help

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local variable 'juveniles' referenced before assignment Alan Robinson <arobinson@lordlawson.org.uk> - 2016-01-13 04:23 -0800
  Re: local variable 'juveniles' referenced before assignment Chris Angelico <rosuav@gmail.com> - 2016-01-13 23:32 +1100
    Re: local variable 'juveniles' referenced before assignment Alan Robinson <arobinson@lordlawson.org.uk> - 2016-01-13 04:54 -0800
      Re: local variable 'juveniles' referenced before assignment Chris Angelico <rosuav@gmail.com> - 2016-01-14 00:05 +1100
      Re: local variable 'juveniles' referenced before assignment Peter Otten <__peter__@web.de> - 2016-01-13 14:05 +0100
        Re: local variable 'juveniles' referenced before assignment Alan Robinson <arobinson@lordlawson.org.uk> - 2016-01-13 05:22 -0800
          Re: local variable 'juveniles' referenced before assignment Alan Robinson <arobinson@lordlawson.org.uk> - 2016-01-13 05:26 -0800

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