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Mon Aug 9 16:00:54 HKT 2004

大家好!
这是《programming python》10。4中的一个例子。这例子运行在服务器端，响应客户端的请求
Example 10-7. PP2E\Internet\Sockets\thread-server.py 
#########################################################
# Server side: open a socket on a port, listen for
# a message from a client, and send an echo reply; 
# echos lines until eof when client closes socket;
# spawns a thread to handle each client connection;
# threads share global memory space with main thread;
# this is more portable than fork--not yet on Windows;
#########################################################

import thread, time
from socket import *                     # get socket constructor and constants
myHost = ''                              # server machine, '' means local host
myPort = 50007                           # listen on a non-reserved port number

sockobj = socket(AF_INET, SOCK_STREAM)           # make a TCP socket object
sockobj.bind((myHost, myPort))                   # bind it to server port number
sockobj.listen(5)                                # allow up to 5 pending connects

def now(): 
    return time.ctime(time.time())               # current time on the server

def handleClient(connection):                    # in spawned thread: reply
    time.sleep(5)                                # simulate a blocking activity
    while 1:                                     # read, write a client socket
        data = connection.recv(1024)
        if not data: break
        connection.send('Echo=>%s at %s' % (data, now()))
    connection.close() 

def dispatcher():                                # listen until process killd
    while 1:                                     # wait for next connection,
        connection, address = sockobj.accept()   # pass to thread for service
        print 'Server connected by', address,
        print 'at', now() 
        thread.start_new(handleClient, (connection,))

dispatcher()

我不明白的是：
    在函数dispatcher（）中，当服务器接到一个请求，启动了一个线程A，在线程A运行过程中，服务器又街道另个client的请求，执行connection, address = sockobj.accept()，那么线程A中的connecion不是就会被覆盖了吗？

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标题：[python-chinese] 请教一个关于线程的问题