title: python manage.py runserver throwing error
body: <p>I am new to python. I gave the following commands:</p>
  
  <pre><code>django-admin startproject webserver
  </code></pre>
  
  <p>This created a skeleton project. After this, I ran</p>
  
  <pre><code>python manage.py runserver 0.0.0.0:8001
  </code></pre>
  
  <p>I am getting the error given below. I am not able to start server. Please guide me?</p>
  
  <pre><code>C:\training\webserver\webserver&gt;python manage.py runserver 0.0.0.0:8001
  Unhandled exception in thread started by &lt;function wrapper at 0x0000000003C872E8&gt;
  Traceback (most recent call last):
    File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 228, in wrapper
      fn(*args, **kwargs)
    File "C:\Python27\lib\site-packages\django\core\management\commands\runserver.py", line 117, in inner_run
      autoreload.raise_last_exception()
    File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 251, in raise_last_exception
      six.reraise(*_exception)
    File "C:\Python27\lib\site-packages\django\utils\autoreload.py", line 228, in wrapper
      fn(*args, **kwargs)
    File "C:\Python27\lib\site-packages\django\__init__.py", line 27, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "C:\Python27\lib\site-packages\django\apps\registry.py", line 108, in populate
      app_config.import_models()
    File "C:\Python27\lib\site-packages\django\apps\config.py", line 202, in import_models
      self.models_module = import_module(models_module_name)
    File "C:\Python27\lib\importlib\__init__.py", line 37, in import_module
      __import__(name)
    File "C:\Python27\lib\site-packages\django\contrib\auth\models.py", line 299, in &lt;module&gt;
      class AbstractUser(AbstractBaseUser, PermissionsMixin):
    File "C:\Python27\lib\site-packages\django\db\models\base.py", line 279, in __new__
      new_class.add_to_class(field.name, new_field)
    File "C:\Python27\lib\site-packages\django\db\models\base.py", line 325, in add_to_class
      value.contribute_to_class(cls, name)
    File "C:\Python27\lib\site-packages\django\db\models\fields\__init__.py", line 709, in contribute_to_class
      cls._meta.add_field(self)
    File "C:\Python27\lib\site-packages\django\db\models\options.py", line 277, in add_field
      self.local_fields.insert(bisect(self.local_fields, field), field)
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
      '__lt__': [('__gt__', lambda self, other: other &lt; self),
    File "C:\Python27\lib\functools.py", line 56, in &lt;lambda&gt;
      '__lt__': [('__gt__', lambda self, other: other &lt; self),
  </code></pre>