How to add the sum of cubes using a function in python?

I can get the answer of cubes but I don't really know where to go from here to get the function to return back the answer and keep adding it to a sum! What do I have to do to make it keep adding to get a total?

def sumNCubes(n):
    for i in range(n)
    return (n-1)**3
def main():
    number = int(raw_input("What number do you want to find the sum of cubes for?"))
    n = number + 1
    for i in range(number):
        n = n - 1 
    print "The result of the sums is:", sumNCubes(n)
main()

You could simply do something like this:

def sumNCubes(n):
    return sum(i**3 for i in range(1,n+1))

which uses a list comprehension to cube number in a range from 1-n+1 (1-n will not include n) then uses python built in sum function to sum all of the cubes.

you could then just pass in your input and print it:

def main():
    number = int(raw_input("What number do you want to find the sum of cubes for?"))
    #this doesn't do anything but change n to 0
    #for i in range(number):
    #    n = n - 1 
    print "The result of the sums is:", sumNCubes(number)
main()

with input of, for example, 5, this will return:

>>> sumNCubes(5)
225