Setup Cassandra for Django - "AttributeError: 'SystemManager' object has no attribute 'describe_keyspace'"

I've followed step-by-step guide in https://github.com/thobbs/twissandra

I'm stuck at python manage.py sync_cassandra where I got message:

['/home/z/twissandra', '/home/z/twiss/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg', '/home/z/twiss/lib/python2.6/site-packages/pip-0.8.2-py2.6.egg', '/home/z/twiss/lib/python2.6开发者_Go百科', '/home/z/twiss/lib/python2.6/plat-linux2', '/home/z/twiss/lib/python2.6/lib-tk', '/home/z/twiss/lib/python2.6/lib-old', '/home/z/twiss/lib/python2.6/lib-dynload', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/home/z/twiss/lib/python2.6/site-packages', '/usr/local/lib/python2.6/dist-packages/pycassa-1.0.5-py2.6.egg', '/usr/local/lib/python2.6/dist-packages/virtualenv-1.5.1-py2.6.egg', '/usr/local/lib/python2.6/site-packages', '/usr/local/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages/PIL', '/usr/lib/python2.6/dist-packages/gst-0.10', '/usr/lib/pymodules/python2.6', '/usr/lib/python2.6/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.6/gtk-2.0']
Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_manager(settings)
  File "/home/z/twiss/lib/python2.6/site-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/home/z/twiss/lib/python2.6/site-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/z/twiss/lib/python2.6/site-packages/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/z/twiss/lib/python2.6/site-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/home/z/twiss/lib/python2.6/site-packages/django/core/management/base.py", line 351, in handle
    return self.handle_noargs(**options)
  File "/home/z/twissandra/tweets/management/commands/sync_cassandra.py", line 17, in handle_noargs
    sys.describe_keyspace('Twissandra')
AttributeError: 'SystemManager' object has no attribute 'describe_keyspace'

I have no idea about this. What to do?

I just noticed that I never merged the sync_cassandra branch (which fixes this issue) into my master branch, because I was expecting ericflo to accept the pull request a little more quickly.

I just merged a moment ago, so pull the master branch and try again. By the way, github is probably a more appropriate place for this question than SO.

Little tip, If you’re getting this error in Python and you have no idea why, check for circular imports. That’s what the problem was for me.

A circular import is for example module A imports module B and module B imports module A. There are certain scenarios where this doesn’t work.