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

from datetime import timedelta

h = ['3:00:00','1:07:00', '4:00:00', '4:05:00', '4:10:00', '4:03:00']

def to_td(h):
    ho, mi, se = h.split(':')
    return timedelta(hours=int(ho), minutes=int(mi), seconds=int(se))

print(str(sum(map(to_td, h), timedelta())))

# Out[31]: 20:25:00