Django middelware profiler

middleware.py

import cProfile, pstats, StringIO

class ProfileMiddleware(object):
    def process_request(self, request):
        pr = cProfile.Profile()
        pr.enable()
        request._pr = pr

    def process_response(self, request, response):
        request._pr.disable()
        s = open('/tmp/demo_app.prof', 'a+')
        sortby = 'cumulative'
        # Sort the output by cumulative time it took in fuctions/methods.
        ps = pstats.Stats(request._pr, stream=s).sort_stats(sortby)
        # Print only 10 most time consuming functions
        ps.print_stats(100)

        return response