python - execute shell command with DISPLAY specified?-CodePudding

I read through a lot of the answers but can't figure out how to execute a command which I currently execute using cron from subprocess or something better?

# cron command
00 16 * * 1-5 DISPLAY=:10 /path/to/shell/script.sh > log/file.log 2>&1

The DISPLAY is Xvfb.

CodePudding user response：

Set the environment variable using os.environ, then run the command using the subprocess module.

import subprocess
import os

os.environ['DISPLAY'] = ':10'
with open('log/file.log') as out:
    subprocess.Popen(['/path/to/shell/script.sh'], stdout=out, stderr=subprocess.STDOUT)

CodePudding user response：

Using the env= argument to subprocess.Popen, you can change the environment only for the child process, without modifying the environment of the Python process itself:

import subprocess
import os

with open('log/file.log') as out:
    subprocess.Popen(['/path/to/shell/script.sh'],
                     env=dict(os.environ, DISPLAY=":10"),
                     stdout=out, stderr=subprocess.STDOUT)