def login(request, template_name):
    """
        Connection de l'utilisateur
    """
    if request.user.is_authenticated():
        return HttpResponseRedirect("/acces-client/")
    else:
        if request.method == 'POST':
            form = loginForm(request.POST)
            if form.is_valid():
                username = request.POST['username']
                password = request.POST['password']
                user = authenticate(username=username, password=password)
                if user:
                    messages.success(request, _(u"Connection réussie, vous pouvez désormais utilisez votre administration."))
                    storage = messages.get_messages(request)
                    for msgs in storage:
                        pass
                    storage.used = False
                    return render_to_response('index.html', {'user': request.user.email}, context_instance=RequestContext(request))
                else:
                    messages.error(request, _(u"Erreur lors de l'authentification, si l'erreur persiste veuillez nous contacter."))
                    storage = messages.get_messages(request)
                    for msgs in storage:
                        pass
                    storage.used = False
        else:
            form = loginForm()
    return render_to_response(template_name, {'form':form}, context_instance=RequestContext(request))

Login call success (after if user) ---> 'AnonymousUser' object has no attribute 'email'