python keyring setup for ubuntu and virtualenvs

gistfile1.py

import os
from os import path as osp
import sys

import keyring

paths_to_link = (
    '/usr/lib/python2.7/dist-packages/dbus',
    '/usr/lib/python2.7/dist-packages/_dbus_bindings.so',
    '/usr/lib/python2.7/dist-packages/_dbus_glib_bindings.so',
)


def main():
    venv_dpath = os.environ.get('VIRTUAL_ENV')
    if venv_dpath is None:
        print >> sys.stderr, 'Error: not in a virtualenv'

    venv_site_packages = os.path.join(venv_dpath, 'lib', 'python%s' % sys.version[:3],
                                      'site-packages')

    for dpath in paths_to_link:
        base_name = osp.basename(dpath)
        link_fpath = osp.join(venv_site_packages, base_name)
        if not osp.exists(link_fpath):
            os.symlink(dpath, link_fpath)

    from keyring.backends.SecretService import Keyring as SSKeyring
    keyring_backend = keyring.get_keyring()
    if isinstance(keyring_backend, SSKeyring):
        print 'OK: all done, you are good to go.  Don't forget to install the SecreteStorage python package.'
    else:
        print >> sys.stderr, 'Error: expected SecretService keyring backend, but got {0}' \
            .format(keyring_backend)

if __name__ == '__main__':
    main()