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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 connect(self):
 """Get a connection to this peer. If an connection to the peer already exists (either incoming or outgoing), that's returned. Otherwise, a new outgoing connection to this peer is created. :return: A future containing a connection to this host. """

        # Prefer incoming connections over outgoing connections.
        if self.connections:
            # First value is an incoming connection
            future = gen.Future()
            future.set_result(self.connections[0])
            return future

        if self._connecting:
            # If we're in the process of connecting to the peer, just wait
            # and re-use that connection.
            return self._connecting

        conn_future = self._connecting = self.connection_class.outgoing(
            hostport=self.hostport,
            process_name=self.tchannel.process_name,
            serve_hostport=self.tchannel.hostport,
            handler=self.tchannel.receive_call,
            tchannel=self.tchannel,
        )

        def on_connect(_):
            if not conn_future.exception():
                # We don't actually need to handle the exception. That's on
                # the caller.
                connection = conn_future.result()
                self.register_outgoing_conn(connection)
            self._connecting = None

        conn_future.add_done_callback(on_connect)
        return conn_future