小编BLA*_*HER的帖子

我有,

timestamp=[]
for x in model_obj:
     timestamp.append(x.start_time)

print timestamp

结果:

[datetime.datetime(2014, 9, 2, 19, 40, 1, tzinfo=<UTC>), datetime.datetime(2014, 9, 2, 19, 40, 14, tzinfo=<UTC>), datetime.datetime(2014, 9, 2, 19, 40, 7, tzinfo=<UTC>), datetime.datetime(2014, 9, 2, 21, 53, tzinfo=<UTC>), datetime.datetime(2014, 9, 2, 22, 25, 24, tzinfo=<UTC>), datetime.datetime(2014, 9, 2, 22, 2
5, 52, tzinfo=<UTC>)]

我的问题是:如何从python的这个日期时间列表中获取最早和最晚的时间？