python subprocess pipe 实时输出日志的操作

Nancy ·

更新时间:2024-11-10

· 994 次阅读

* 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))

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输出 subprocess pipe Python

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