Unable to switch proxy port

[ahaha-yu]

i used the code
socks.set_default_proxy(socks.SOCKS5, "localhost")
socket.socket = socks.socksocket
This is working fine, when I want to switch a different proxy port, it returns an error saying I can't connect, I confirmed that my proxy port is fine.
err： ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))