import datetime
print ((datetime.datetime.now()-datetime.timedelta(days=1)).strftime("%Y-%m-%d %H:%M"))
print ((datetime.datetime.now()-datetime.timedelta(minutes=1)).strftime("%Y-%m-%d %H:%M"))
print ((datetime.datetime.now()-datetime.timedelta(seconds=1)).strftime("%Y-%m-%d %H:%M"))
输出结果
python datetime获取几分钟、小时、天之前的时间
原文：http://www.cnblogs.com/saryli/p/6934913.html