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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def common(self):
 """ Common part execute uppon GET and POST request :return: * The returned value of :meth:`authenticated` if the user is authenticated and not requesting for authentication or if the authentication has just been renewed * The returned value of :meth:`not_authenticated` otherwise :rtype: django.http.HttpResponse """

        # if authenticated and successfully renewed authentication if needed
        if self.request.session.get("authenticated") and (not self.renew or self.renewed):
            return self.authenticated()
        else:
            return self.not_authenticated()