Python中date与datetime转换

http://www.codecho.com/convert-date-to-datetime-in-python/?replytocom=7607

1.date转为datetime类型，使用datetime的combine()：

>>> from datetime import datetime,date,time 
>>> d = date(2011,7,14) 
>>> dt = datetime.combine(d,time()) 
>>> dt datetime.datetime(2011, 7, 14, 0, 0) 

2. datetime转为date类型,使用datetime的date()：

>>> d1 = dt.date()
>>> d1 datetime.date(2011, 7, 14)