@login_required
def password_change_done(request,
                         template_name='registration/password_change_done.html',
                         current_app=None, extra_context=None):
    context = {}
    if extra_context != None:
        context.update(extra_context)
    return TemplateResponse(request, template_name, context,
                            current_app=current_app)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/auth/views.py/password_change_done/operator `is not` -> `!=`