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from django.core.exceptions import ImproperlyConfigured
from django.utils import importlib
def ensure_session_key(request):
"""
Given a request return a session key that will be used. There may already
be a session key associated, but if there is not, we force the session to
create itself and persist between requests for the client behind the given
request.
"""
key = request.session.session_key
if key is None:
# @@@ Django forces us to handle session key collision amongst
# multiple processes (not handled)
request.session.save()
# force session to persist for client
request.session.modified = True
key = request.session.session_key
return key
def load_path_attr(path):
i = path.rfind(".")
module, attr = path[:i], path[i + 1:]
try:
mod = importlib.import_module(module)
except ImportError, e:
raise ImproperlyConfigured("Error importing %s: '%s'" % (module, e))
try:
attr = getattr(mod, attr)
except AttributeError:
raise ImproperlyConfigured("Module '%s' does not define a '%s'" % (module, attr))
return attr
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