Python Subprocess Timeout Guide

1 year ago
Benjamin Taylor
1 minute

In Python, you can set a timeout using the subprocess.run() function. Introduced in Python 3.5, subprocess.run() makes it easy to execute external commands and wait for them to finish.

Here is an example code for setting a timeout.

import subprocess

# 执行命令，并设置超时时间为5秒
try:
    result = subprocess.run(['command', 'arg1', 'arg2'], timeout=5, check=True)
    # 如果命令成功执行，可以通过result的属性获取命令的输出、返回码等信息
    print('命令输出:', result.stdout)
    print('返回码:', result.returncode)
except subprocess.TimeoutExpired:
    # 如果超时，可以在这里处理超时情况
    print('命令执行超时')
except subprocess.CalledProcessError as e:
    # 如果命令执行失败，可以在这里处理失败情况
    print('命令执行失败:', e.returncode, e.output)

In the example code above, the timeout parameter of the subprocess.run() function is used to set the time limit in seconds. If the command is not completed within the specified timeout, a subprocess.TimeoutExpired exception will be raised.

bannerAds