Sum of all digits in a number passed as input

"""def digit_sum(n):
    nlist = []
    count = 0
    for n in str(n):
        nlist.append(n)
    for i in nlist:
        count += int(i)
    return count"""
    
def right_most_digit(n):
    return n % 10

def digit_sum(n):
    count = 0
    for i in range(len(str(n))):
        for i in enumerate(str(n)):
            print i
        count += right_most_digit(n)
        n //= 10
    return count

print digit_sum(4110)