# squareEach-6.11.py
# Square the numbers in a list by modifying the list parameter.
# Neal Nelson   2007.10.30

# This function modifies the list argument passed in
def squareEach(nums):

    # nums coming in looks like [4,6,8]
    # modify nums to look like [16, 36, 64]
    for i in range(len(nums)):
        nums[i] = nums[i] ** 2
        

def main():
    nums = input("Enter a list of numbers with brackets, eg, [4,6,8] :")
    print nums    # should print eg [4,6,8]

    squareEach(nums)
	# list nums has been modified as a side effect of the squareEach function
    print "Squaring this list gives:", nums
    print nums    # prints eg [16, 36, 64] showing nums parameter modified
                 
                 
main()