python subprocess模块

一. subprocess.Popen

　　客户端传输一个输入的命令给服务器端

　　服务器收到后执行此命令并且将结果返回给客户端

　　客户端收到命令执行结果后呈现到用户眼前

#server服务器端
import socket
import subprocess

sk = socket.socket()
sk.bind(('127.0.0.1',8080))
sk.listen()

conn,addr = sk.accept()
while 1:
    cmd = conn.recv(1024).decode('utf-8')
    r = subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
    stdout = r.stdout.read()
    stderr = r.stderr.read()
    if stderr:
        conn.send(stderr)#错误结果或不可执行的命令
    else:
        conn.send(stdout)#正确结果

conn.close()
sk.close()

#client客户端
import socket

sk = socket.socket()

sk.connect_ex(('127.0.0.1',8080))
while 1:
    cmd = input('请输入一个命令>>>')
    sk.send(cmd.encode('utf-8'))

    result = sk.recv(102400).decode('gbk')

    print(result)


sk.close()