def _read(self, sock):
        if self._clients not in sock:
            return

        try:
            data = sock.recv(self._bufsize)
            if data:
                self.fire(read(sock, data)).notify = True
            else:
                self.close(sock)
        except SocketError as e:
            if e.args[0] == EWOULDBLOCK:
                return
            else:
                self.fire(error(sock, e))
                self._close(sock)
dataset/ETHPy150Open circuits/circuits/circuits/net/sockets.py/Server._read/swapped operands of `not in`