ImportError: Settings cannot be imported, because environment variable DJANGO_SE

>>> import django
>>> from django import template
>>> t = template.Template('My name is {{name}}.')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Python27\lib\site-packages\django\template\base.py", line 106, in __i
nit__
    if settings.TEMPLATE_DEBUG and origin is None:
  File "D:\Python27\lib\site-packages\django\utils\functional.py", line 276, in
__getattr__
    self._setup()
  File "D:\Python27\lib\site-packages\django\conf\__init__.py", line 40, in _set
up
    raise ImportError("Settings cannot be imported, because environment variable
 %s is undefined." % ENVIRONMENT_VARIABLE)
ImportError: Settings cannot be imported, because environment variable DJANGO_SE
TTINGS_MODULE is undefined.

后来百度下，貌似少导点东西。

>>> from django.conf import settings
>>> settings.configure()

然后OK了，然后就没有了。