UVA-11332 || Summing Digits

 11332 - Summing Digits :

try:

    while True:

        n = int(input())

        if n == 0:

            break

        if n<10:

            print(n)

        if n>9:

            while n>9:

                result = 0

                while n>0:

                    result = result + n%10

                    n = n//10

                n = result

            print(result)

except EOFError:

    pass

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