def _login(self, environ, start_response):
        """Send a login response back to the client."""
        response = HTTPUnauthorized()
        response.www_authenticate = ('Basic', {'realm': self._realm})
        return response(environ, start_response)
def _login ( self , environ , start_response ) : response = HTTPUnauthorized ( ) response . www_authenticate = ( 'Basic' , { 'realm' : self . _realm } ) return response ( environ , start_response )
Send a login response back to the client.