Python 2.6 聊天循环问题。不能同时接收和发送

Question

我试图制作一个控制台聊天程序，但我的循环有问题。我无法同时获得输入和接收其他人的输入。如果一端发送了两条或更多消息，则另一端必须发送一条消息才能收到下一条消息。我是 python 的新手，正在寻找正确方向的插入力。我想到了多线程，但这有点超出了我的理解范围。还有其他想法吗？

import EncMod
from socket import *

#Get User Info
Ip = raw_input('IP>>>')
Port = int(raw_input('Port>>>'))
User = raw_input('Username>>>')

#Open Socket To Server
EncCon = socket(AF_INET, SOCK_STREAM)
EncCon.connect((Ip, Port))

print '\nStarting Chat....'
print '\n<-------------------------------------------->\n\n'

#Send/Receive Loop
while 1:
   MsgOut = raw_input()
   if MsgOut: EncCon.send(MsgOut)

   MsgIn = EncCon.recv(1024)
   if MsgIn: print MsgIn

EncCon.close()

Answer 1

Twisted framework可用于帮助完成此任务。下面的代码启动一个聊天服务器，然后客户端可以连接到该服务器并根据服务器实例设置来回通信。您可以进行适当的修改以满足您的要求:

from twisted.internet.protocol import Factory
from twisted.protocols.basic import LineReceiver
from twisted.internet import reactor

class Chat(LineReceiver):

    def __init__(self, users):
        self.users = users
        self.name = None
        self.state = "GETNAME"

    def connectionMade(self):
        self.sendLine("What's your name?")

    def connectionLost(self, reason):
        if self.users.has_key(self.name):
            del self.users[self.name]

    def lineReceived(self, line):
        if self.state == "GETNAME":
            self.handle_GETNAME(line)
        else:
            self.handle_CHAT(line)

    def handle_GETNAME(self, name):
        if self.users.has_key(name):
            self.sendLine("Name taken, please choose another.")
            return
        self.sendLine("Welcome, %s!" % (name,))
        self.name = name
        self.users[name] = self
        self.state = "CHAT"

    def handle_CHAT(self, message):
        message = "<%s> %s" % (self.name, message)
        for name, protocol in self.users.iteritems():
            if ':' in message:
                self.exc(message.split(':')[0])
            if protocol != self:
                protocol.sendLine(message)

    def exc(self, cmd):
        print cmd
        if cmd == 'who':
            for i in self.users:
                print i


class ChatFactory(Factory):

    def __init__(self):
        self.users = {} # maps user names to Chat instances

    def buildProtocol(self, addr):
        return Chat(self.users)


reactor.listenTCP(8123, ChatFactory())
reactor.run()