(self, pool_key, request_context=None)
return pool
Get a :class:`ConnectionPool` based on the provided pool key.

        ``pool_key`` should be a namedtuple that only contains immutable
        objects. At a minimum it must have the ``scheme``, ``host``, and
        ``port`` fields.
Get a :class:`ConnectionPool` based on the provided pool key.
Get a : class : ConnectionPool based on the provided pool key .
def connection_from_pool_key(self, pool_key, request_context=None):
        """
        Get a :class:`ConnectionPool` based on the provided pool key.

        ``pool_key`` should be a namedtuple that only contains immutable
        objects. At a minimum it must have the ``scheme``, ``host``, and
        ``port`` fields.
        """
        with self.pools.lock:
            # If the scheme, host, or port doesn't match existing open
            # connections, open a new ConnectionPool.
            pool = self.pools.get(pool_key)
            if pool:
                return pool

            # Make a fresh ConnectionPool of the desired type
            scheme = request_context['scheme']
            host = request_context['host']
            port = request_context['port']
            pool = self._new_pool(scheme, host, port, request_context=request_context)
            self.pools[pool_key] = pool

        return pool
def connection_from_pool_key ( self , pool_key , request_context = None ) : with self . pools . lock : # If the scheme, host, or port doesn't match existing open # connections, open a new ConnectionPool. pool = self . pools . get ( pool_key ) if pool : return pool # Make a fresh ConnectionPool of the desired type scheme = request_context [ 'scheme' ] host = request_context [ 'host' ] port = request_context [ 'port' ] pool = self . _new_pool ( scheme , host , port , request_context = request_context ) self . pools [ pool_key ] = pool return pool