Python Twisted 中的异步编程

Python Twisted 是一个用于异步编程的框架，它提供了一种简单而强大的方式来处理并发任务。本文将介绍 Twisted 的基本概念和使用方法，并通过一个实例代码来演示其强大的异步处理能力。

pip install twisted

python
from twisted.internet import reactor, protocol
class EchoServer(protocol.Protocol):
    def dataReceived(self, data):
        response = "Server received: {}".format(data)
        self.transport.write(response.encode())
class EchoServerFactory(protocol.Factory):
    def buildProtocol(self, addr):
        return EchoServer()
class EchoClient(protocol.Protocol):
    def connectionMade(self):
        self.transport.write("Hello, server!".encode())
    def dataReceived(self, data):
        print("Client received: {}".format(data.decode()))
class EchoClientFactory(protocol.ClientFactory):
    def buildProtocol(self, addr):
        return EchoClient()
    def clientConnectionFailed(self, connector, reason):
        print("Connection failed.")
        reactor.stop()
    def clientConnectionLost(self, connector, reason):
        print("Connection lost.")
        reactor.stop()
reactor.listenTCP(8000, EchoServerFactory())
reactor.connectTCP("localhost", 8000, EchoClientFactory())
reactor.run()