爲什麼datetime.now（）在django服務器內執行時顯示無效結果？

Question

案例1

>>> datetime.__file__ 
'/usr/lib/python2.6/lib-dynload/datetime.so' 
>>> print datetime.datetime.now() 
2010-05-19 19:45:40.202634 

案例2

from django.db import models 
import datetime 
print datetime.__file__ 
print "--------------------------", datetime.datetime.now() 

----------- --------結果

Development server is running at http://127.0.0.1:8000/ 
Quit the server with CONTROL-C. 
Validating models... 
/usr/lib/python2.6/lib-dynload/datetime.so 
-------------------------- 2010-05-19 09:16:43.987508 
0 errors found 

Answer 1

正如馬克指出它看起來像日本的時區差異：

>>> from dateutil import tz 
>>> from datetime import datetime 
>>> utc_time = datetime(2010, 5, 19, 9, 16, 43, tzinfo=tz.tzutc()) 
>>> jst_time = utc_time.astimezone(tz.gettz('Japan')) 
>>> print utc_time 
2010-05-19 09:16:43+00:00 
>>> print jst_time 
2010-05-19 18:16:43+09:00 

標準datetime模塊只處理天真時間，可以添加​​（特別是dateutil.tz.tzlocal()構造函數）的時區支持。