Python你可能会用到的时间比较
>>> from datetime import datetime, timedelta>>> nowtime = datetime.now() # 现在的时间
>>> nowtime
datetime.datetime(2017, 6, 20, 20, 11, 12, 926763)
>>>
>>> lasthour = datetime(2017, 6, 20, 19, 11, 12, 926763) # 1个小时前的时间
>>> lasthour
datetime.datetime(2017, 6, 20, 19, 11, 12, 926763)
>>> lasthour_str = str(lasthour) # 模拟从数据库取出来的str类型时间数据
>>> lasthour_str
'2017-06-20 19:11:12.926763'
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