MySQL的主从复制延迟问题

time和datetime模块

>>> import time
>>> import datetime

>>> time.strftime('%Y-%m-%d %H:%M')
'2015-12-16 17:21'

>>> datetime.datetime.now()
datetime.datetime(2015, 12, 16, 17, 18, 43, 684232)
>>> print datetime.datetime.now()
2015-12-16 17:18:49.018197

>>> datetime.datetime.now().strftime("%Y-%m-%d")
'2015-12-16'

>>> datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
'2015-12-16 17:20:22'

>>> datetime.datetime.now().date()
datetime.date(2015, 12, 16)
>>> print datetime.datetime.now().date()
2015-12-16

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