ERLANG和PYTHON互通实现过程详解

-module(town).-behaviour(gen_server). %% API-export([start/0,combine/1]). %% gen_server callbacks-export([init/1, handle_call/3, handle_cast/2, handle_info/2,terminate/2, code_change/3]).-record(state, {port}). start() -> gen_server:start_link({global, ?MODULE}, ?MODULE, [], []).stop() -> gen_server:cast(?SERVER, stop).init([]) -> process_flag(trap_exit, true), Port = open_port({spawn, "python -u /home/freefis/Desktop/town.py"},[stream,{line, 1024}]), {ok, #state{port = Port}}. handle_call({combine,String}, _From, #state{port = Port} = State) -> port_command(Port,String), receive {Port,{data,{_Flag,Data}}} ->  io:format("receiving:~p~n",[Data]),  sleep(2000),  {reply, Data, Port} end.handle_cast(stop, State) -> {stop, normal, State};handle_cast(_Msg, State) -> {noreply, State}. handle_info(Info, State) -> {noreply,State}. terminate(_Reason, Port) -> ok. code_change(_OldVsn, State, _Extra) -> {ok, State}. %%--------------------------------------------------------------------%%% Internal ---------------------------------------------------------combine(_String) -> start(), String = list_to_binary("combine|"++_String++"/n"), gen_server:call(?SERVER,{combine,String},infinity), stop().

import sysdef handle(_string): if _string.startswith("combine|"):  string = "".join( _string[8:].split(","))  return string """waiting for input """while 1: # Recv. Binary Stream as Standard IN _stream = sys.stdin.readline() if not _stream: break # Scheme, Turn into Formal String inString = _stream.strip("/r/n") # handle String outString = handle(inString) # send to port as Standart OUT sys.stdout.write("%s/n" % (outString,)) sys.exit(0)