使用python实现时间时分秒与秒数的互相转换方法

st = "08:30:30"
et = "9:33:33"

#方法一
def t2s(t):
 h,m,s = t.strip().split(":")
 return int(h) * 3600 + int(m) * 60 + int(s)

print(t2s(st))

#方法二
import datetime
var = ("hours","minutes","seconds")
time2sec = lambda x:int(datetime.timedelta(**{k:int(v) for k,v in zip(var,x.strip().split(":"))}).total_seconds())

print(time2sec(st))

m, s = pmod(seconds, 60)
h, m = pmod(m, 60)
print ("%02d:%02d:%02d" % (h, m, s))