Django-1.3 beta 问题

Question

大家好！！我对学习Django非常热情，之前学了一点Django-1.2，但后来我安装了1.3版本。这个版本在我用命令“python manage.py runserver”启动服务器时出现了很大的错误。我搞不清楚该怎么解决这个问题。错误信息如下：

Traceback (most recent call last):    

  File "manage.py", line 11, in <module>    
    execute_manager(settings)    
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 438, in execute_manager    
    utility.execute()    
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 379, in execute  
    self.fetch_command(subcommand).run_from_argv(self.argv)  
  File "/usr/local/lib/python 2.6/dist-packages/django/core/management/__init__.py", line 261, in fetch_command   
    klass = load_command_class(app_name, subcommand)    
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line   67, in load_command_class    
    module = import_module('%s.management.commands.%s' % (app_name, name))    
  File "/usr/local/lib/python2.6/dist-packages/django/utils/importlib.py", line 35, in   import_module    
    __import__(name)    
  File "/usr/local/lib/python2.6/dist-packages/django/core/management/commands    /runserver.py", line 8, in <module>    
    from django.core.handlers.wsgi import WSGIHandler  
  File "/usr/local/lib/python2.6/dist-packages/django/core/handlers/wsgi.py", line 11, in <module>    
    from django.core import signals   
  File "/usr/local/lib/python2.6/dist-packages/django/core/signals.py", line 1, in <module>
    from django.dispatch import Signal   
  File "/usr/local/lib/python2.6/dist-packages/django/dispatch/__init__.py", line 9, in <module>    
    from django.dispatch.dispatcher import Signal, receiver    
ImportError: cannot import name receiver    

Answer 1

这种情况可能是因为你安装了两个版本的Django。你可以删除这个文件夹：/usr/local/lib/python2.6/dist-packages/django。直接把整个文件夹删掉就行。然后重新安装Django 1.3，这样就应该没问题了。

Answer 2

为了避免将来出现类似的问题，可以使用 virtualenv 这个工具。