Python的扭曲：更改目錄爲每個客戶端獨立

Question

我是新來的Python扭了，我決定創建這個作爲我的學習過程的一部分：

我創建使用Python扭曲的TCP客戶機和服務器。客戶端可以發送命令到服務器以列​​出目錄，更改目錄和查看文件。所有這些都按照我希望的方式工作，但是當我將多個客戶端連接到服務器，並且在其中一個客戶端中更改目錄時，它也會更改其他客戶端上的目錄！有沒有辦法讓這些獨立？

服務器代碼

from twisted.internet.protocol import Protocol, Factory 
from twisted.internet import reactor 

import os 

class BrowserServer(Protocol): 
    def __init__(self): 
     pass 

    def dataReceived(self, data): 
     command = data.split() 

     message = "" 

     if command[0] == "c": 
      try: 
       if os.path.isdir(command[1]): 
        os.chdir(command[1]) 
        message = "Okay" 
       else: 
        message = "Bad path" 
      except IndexError: 
       message = "Usage: c <path>" 
     elif command[0] == "l": 
      for i in os.listdir("."): 
       message += "\n" + i 
     elif command[0] == "g": 
      try: 
       if os.path.isfile(command[1]): 
        f = open(command[1]) 
        message = f.read() 
      except IndexError: 
       message = "Usage: g <file>" 
      except IOError: 
       message = "File doesn't exist" 
     else: 
      message = "Bad command" 

     self.transport.write(message) 

class BrowserFactory(Factory): 
    def __init__(self): 
     pass 

    def buildProtocol(self, addr): 
     return BrowserServer() 

if __name__ == "__main__": 
    reactor.listenTCP(8123, BrowserFactory()) 
    reactor.run() 

客戶端代碼

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

class BrowserClient(LineReceiver): 
    def __init__(self): 
     pass 

    def connectionMade(self): 
     print "connected" 
     self.userInput() 

    def dataReceived(self, line): 
     print line 
     self.userInput() 

    def userInput(self): 
     command = raw_input(">") 
     if command == "q": 
      print "Bye" 
      self.transport.loseConnection() 
     else: 
      self.sendLine(command) 

class BrowserFactory(ClientFactory): 
    protocol = BrowserClient 

    def clientConnectionFailed(self, connector, reason): 
     print "connection failed: ", reason.getErrorMessage() 
     reactor.stop() 

    def clientConnectionLost(self, connector, reason): 
     print "connection lost: ", reason.getErrorMessage() 
     reactor.stop() 

if __name__ == "__main__": 
    reactor.connectTCP("localhost", 8123, BrowserFactory()) 
    reactor.run() 

Answer 1

你不能，即使使用線程chdir會影響進程（IIRC）的所有線程，保持目錄訪問和調用listdir和open全路徑