Restart python-script from within itself

Question

I have a python-based GTK application that loads several modules. It is run from the (linux) terminal like so:

./myscript.py --some-flag setting

Answer 1

You're looking for os.exec*() family of commands.

To restart your current program with exact the same command line arguments as it was originally run, you could use the following:

os.execv(sys.argv[0], sys.argv)

Answer 2

Inspired by @YumYumYum and fixed the problem Using restart.sh and os.execl

restart.sh

#!/bin/bash/
pkill -f main.py
python main.py

Add this to your main.py

os.excel("restart.sh","")

Answer 3

I think this is a more elaborate answer, as sometimes you may end up with too many open file objects and descriptors, that can cause memory issues or concurrent connections to a network device.

import os
import sys
import psutil
import logging

def restart_program():
    """Restarts the current program, with file objects and descriptors
       cleanup
    """

    try:
        p = psutil.Process(os.getpid())
        for handler in p.get_open_files() + p.connections():
            os.close(handler.fd)
    except Exception, e:
        logging.error(e)

    python = sys.executable
    os.execl(python, python, *sys.argv)