# Author:  James Tam
# Version: March 6, 2010

# In function fun another local reference refers to the original list in main.
# Since this copy refers to the original list changes made via the local reference
# will change the original list.
def fun (list):
    list[0] = 99
print list

def main ():
    list = [1,2,3]
    print list
    fun (list)
    print list

main ()