Python hh:mm:ss to seconds

def secondsCreate(trackTime):

return sum(map(lambda a:a[0]*a[1],zip([1,60,3600],map(int,reversed(trackTime.split(":"))))))

time1 = "01:23:45 "

print secondsCreate(time1)

результат 5025

time2 = "05:23"

print secondsCreate(time2)

результат 323