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# This program computes the sum of the digits of an integer
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# 1. Input
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A = raw_input("Enter an integer value -> ")
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# 2. Processing
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B = list(A)
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Digits = map(int,B)
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Sum = 0
for N in Digits:
    Sum = Sum + N
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# 3. Output
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print "The sum of the digits is : ",Sum