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Nickikku/lucky_sum

Created July 18, 2017 12:15
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lucky_sum
#lucky number is 13 in this case. It means that when input == 13, it will stop the sum of a + b + c.
def lucky_sum(a, b, c):
if a == 13: #if a == 13 it returns 0
return 0
elif b == 13: #if b == 13 it returns only a
return a
elif c == 13: #if c == 13 it returns the sum of a + b
return a + b
else: #if none of them are 13, the sum of a + b + c is calculated
return a + b + c
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