title: django uses python 2.6 instead of python 3.3
body: <p>Hi I am using Mac OS (SnowLeopard). I have python installed by default which I guess is 2.6.
  I installed python 3.3 from the python server and now installed django also. 
  I created a django project using STARTPROJECT and tried to run it using manage.py runserver.</p>
  
  <p>I get errors, but from the error its evident that the python getting used still is 2.6
  How to change this?</p>
  
  <p>The error is as </p>
  
  <pre><code>Unhandled exception in thread started by &lt;bound method Command.inner_run of &lt;django.contrib.staticfiles.management.commands.runserver.Command object at 0x10169aed0&gt;&gt;
  Traceback (most recent call last):
    File "/Library/Python/2.6/site-packages/django/core/management/commands/runserver.py", line 92, in inner_run
      self.validate(display_num_errors=True)
    File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 280, in validate
      num_errors = get_validation_errors(s, app)
    File "/Library/Python/2.6/site-packages/django/core/management/validation.py", line 35, in get_validation_errors
      for (app_name, error) in get_app_errors().items():
    File "/Library/Python/2.6/site-packages/django/db/models/loading.py", line 166, in get_app_errors
      self._populate()
    File "/Library/Python/2.6/site-packages/django/db/models/loading.py", line 72, in _populate
      self.load_app(app_name, True)
    File "/Library/Python/2.6/site-packages/django/db/models/loading.py", line 96, in load_app
      models = import_module('.models', app_name)
    File "/Library/Python/2.6/site-packages/django/utils/importlib.py", line 35, in import_module
      __import__(name)
    File "/Library/Python/2.6/site-packages/django/contrib/auth/models.py", line 21, in &lt;module&gt;
      from django.contrib.contenttypes.models import ContentType
    File "/Library/Python/2.6/site-packages/django/contrib/contenttypes/models.py", line 127, in &lt;module&gt;
      class ContentType(models.Model):
    File "/Library/Python/2.6/site-packages/django/db/models/base.py", line 97, in __new__
      new_class.add_to_class('_meta', Options(meta, **kwargs))
  TypeError: Error when calling the metaclass bases
      __init__() keywords must be strings
  </code></pre>