Python summing up time

Question

In python how do I sum up the following time?

 0:00:00
 0:00:15
 9:30:56

Answer 1

lines = ["0:00:00", "0:00:15", "9:30:56"]
total = 0
for line in lines:
    h, m, s = map(int, line.split(":"))
    total += 3600*h + 60*m + s
print "%02d:%02d:%02d" % (total / 3600, total / 60 % 60, total % 60)