如何使其与Windows兼容?

你好,斯塔克!

我在将我的一个Python脚本Linux移植到Windows时遇到了一个小(大)问题。最棘手的是,我必须启动一个进程,将它的所有流重定向到我在脚本中读写的管道中。

对于Linux,这是小菜一碟:

server_startcmd = [
           "java", 
           "-Xmx%s" % self.java_heapmax, 
           "-Xms%s" % self.java_heapmin,
           "-jar",
           server_jar,
           "nogui"
        ]

server = Popen(server_startcmd, stdout = PIPE, 
                                stderr = PIPE, 
                                stdin  = PIPE)

outputs = [
     server_socket, # A listener socket that has been setup before
     server.stderr,
     server.stdout,
     sys.stdin # Because I also have to read and process this.
   ]

clients = []

while True:
     read_ready, write_ready, except_ready = select.select(outputs, [], [], 1.0)

     if read_ready == []:
        perform_idle_command() # important step
     else:
        for s in read_ready:
           if s == sys.stdin:
              # Do stdin stuff
           elif s == server_socket:
              # Accept client and add it to 'clients'
           elif s in clients:
              # Got data from one of the clients

我知道对于Windows,win32api模块中有win32pipe。问题是,找到这个API的资源非常困难,而我发现的并没有真正的帮助。

if os.name == 'nt':
   import win32pipe
  (stdin, stdout) = win32pipe.popen4(" ".join(server_args))
else:
   server = Popen(server_args,
     stdout = PIPE,
     stdin = PIPE,
     stderr = PIPE)
   outputs = [server.stderr, server.stdout, sys.stdin]
   stdin = server.stdin

[...]

while True:
   try:
      if os.name == 'nt':
         outready = [stdout]
      else:
         outready, inready, exceptready = select.select(outputs, [], [], 1.0)
   except:
      break

stdout 下面是已启动的子进程的组合stdout和stderr win32pipe.popen4(...)

纵火的问题是:

• 为什么不呢? select() 对于windows版本?这样不行吗?
• 选择() 那么,我如何实现必要的超时呢 选择() 提供(在这里显然不会像这样工作)