python subprocess pipe 实时输出日志的操作_Python

python subprocess pipe 实时输出日志的操作

2021-08-09 00:53ADChen Python

这篇文章主要介绍了python subprocess pipe 实时输出日志的操作，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧

* test11.py

				?

									import time

									print "1"

									time.sleep(2)

									print "1"

									time.sleep(2)

									print "1"

									time.sleep(2)

									print "1"

* test.py

import subprocess

p = subprocess.Popen("python test11.py", shell=True, stdout=subprocess.PIPE)

# None表示正在执行中

while p.poll() is None: <br>　　out = p.stdout.readline() <br>　　if out != "": <br>　　　　print out

补充知识：python 通过 subprocess.Popen执行命令，重定向实时输出

执行命令

				?

									import subprocess

									import sys

									# 常用编码

									GBK = 'gbk'

									UTF8 = 'utf-8'

									# 解码方式，一般 py 文件执行为utf-8 ，cmd 命令为 gbk

									current_encoding = GBK

									popen = subprocess.Popen('ping www.baidu.com', shell = True,

									             stdout = subprocess.PIPE,

									             stderr = subprocess.PIPE,

									             bufsize = 1)

									out,err = popen.communicate()

									print('std_out: ' + out)

									print('std_err: ' + err)

									print('returncode: ' + str(popen.returncode))

执行 .py文件

				?

									import subprocess

									import sys

									# 常用编码

									GBK = 'gbk'

									UTF8 = 'utf-8'

									current_encoding = UTF8 

									popen = subprocess.Popen('python D:\code\test.py',

									             stdout = subprocess.PIPE,

									             stderr = subprocess.PIPE,

									             bufsize = 1)

									out,err = popen.communicate()

									print('std_out: ' + out)

									print('std_err: ' + err)

									print('returncode: ' + str(popen.returncode))