Django模型数据操作时遇到的问题，用ipython打开manage.py shell报错，求大神帮忙解答。

这是ipython报的错，我第一次在这提问，有什么不妥，希望指出。

 [TerminalIPythonApp] Error in executing file in user namespace: manage.py
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
C:\Python27\lib\site-packages\IPython\core\shellapp.pyc in _exec_file(self, fname)
    291                         self.shell.safe_execfile(full_filename, self.shell.user_ns)
    292                     finally:
--> 293                         del self.shell.user_ns['__file__']
    294         finally:
    295             sys.argv = save_argv

KeyError: '__file__'