没有名为url的模块

Request Method: GET
Request URL:    http://127.0.0.1:8000/admin/
Django Version: 1.2.5
Exception Type: ImportError
Exception Value:    
No module named urls
Exception Location: /usr/local/lib/python2.6/dist-packages/django/utils/importlib.py in import_module, line 35
Python Executable:  /usr/bin/python
Python Version: 2.6.5
Python Path:    [\'/usr/local/google/Myfiles/cheeserater\', \'/usr/local/buildtools/current/sitecustomize\', \'/usr/lib/python2.6\', \'/usr/lib/python2.6/plat-linux2\', \'/usr/lib/python2.6/lib-tk\', \'/usr/lib/python2.6/lib-old\', \'/usr/lib/python2.6/lib-dynload\', \'/usr/lib/python2.6/dist-packages\', \'/usr/lib/python2.6/dist-packages/PIL\', \'/usr/lib/python2.6/dist-packages/gst-0.10\', \'/usr/lib/pymodules/python2.6\', \'/usr/lib/python2.6/dist-packages/gtk-2.0\', \'/usr/lib/pymodules/python2.6/gtk-2.0\', \'/usr/local/lib/python2.6/dist-packages\']
Server time:    Tue, 19 Apr 2011 23:49:27 -0500