os.pipe() os.pathconf(path, name) os.popen(command[, mode[, bufsize]]) 概述 os.pipe() 方法用于创建一个管道, 返回一对文件描述符(r, w) 分别为读和写。 语法 pipe()方法语法格式如下: os.pipe() 参数 无 返回值 返回文件描述符对。 实例 以下实例演示了 pipe() 方法的使用: #!/usr/bin/python3 import os, sys print ("The child will write text to a pipe and ") print ("the parent will read the text written by child...") # 文件描述符 r, w 用于读、写 r, w = os.pipe() processid = os.fork() if processid: # 父进程 # 关闭文件描述符 w os.close(w) r = os.fdopen(r) print ("Parent reading") str = r.read() print ("text =", str) sys.exit(0) else: # 子进程 os.close(r) w = os.fdopen(w, 'w') print ("Child writing") w.write("Text written by child...") w.close() print ("Child closing") sys.exit(0) 执行以上程序输出结果为: The child will write text to a pipe and the parent will read the text written by child... Parent reading Child writing Child closing text = Text written by child... os.pathconf(path, name) os.popen(command[, mode[, bufsize]])