Django "__init__() keywords must be strings" error while running "runserver"
Question: I just set up virtualenv to start django project. I installed everything fine.
when I issue "python manage.py runserver" it spits out this error. I tried all
kind of django runserver error through out and no one seems to have this.
Anyone have insight into it?

    
    
    Validating models...
    
    Unhandled exception in thread started by <bound method Command.inner_run of <django.contrib.staticfiles.management.commands.runserver.Command object at 0x1016bb0d0>>
    Traceback (most recent call last):
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/core/management/commands/runserver.py", line 92, in inner_run
        self.validate(display_num_errors=True)
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/core/management/base.py", line 280, in validate
        num_errors = get_validation_errors(s, app)
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/core/management/validation.py", line 35, in get_validation_errors
        for (app_name, error) in get_app_errors().items():
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/db/models/loading.py", line 166, in get_app_errors
        self._populate()
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/db/models/loading.py", line 72, in _populate
        self.load_app(app_name, True)
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/db/models/loading.py", line 96, in load_app
        models = import_module('.models', app_name)
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/utils/importlib.py", line 35, in import_module
        __import__(name)
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/contrib/auth/models.py", line 21, in <module>
        from django.contrib.contenttypes.models import ContentType
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/django/contrib/contenttypes/models.py", line 127, in <module>
        class ContentType(models.Model):
      File "/usr/local/bin/django-hari/lib/python2.6/site-packages/Django-1.5.4-py2.6.egg/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
    


Answer: It's [a known issue](https://code.djangoproject.com/ticket/18961). Django 1.5
[requires](https://docs.djangoproject.com/en/1.5/topics/install/#install-
python) Python 2.6.5 or newer. You have an older version of Python installed
on your computer. You need to [install a newer version of
Python](http://www.python.org/getit/), for example Python 2.7.x.

