Attaches Django Rest Framework token auth header to the given Request object.

DRFTokenAuth.py

from requests.auth import AuthBase

class DRFTokenAuth(AuthBase):
    """
    Attaches Django Rest Framework token auth header to the given Request object.
    http://www.django-rest-framework.org/api-guide/authentication/#tokenauthentication
    http://docs.python-requests.org/en/latest/user/authentication/#new-forms-of-authentication
    """
    def __init__(self, api_key):
        self.api_key = api_key

    def __call__(self, r):
        r.headers['Authorization'] = " Token %s" % self.api_key
        return r