当必须重新启动脚本时，如何避免“[Errno 7] 参数列表太长”？

Question

I have a script which runs without any problems for several days/weeks. Based on some definitions, I need to restart this entire script. The restart itself is realized with the following line. And this works in most cases without any problems.

os.execv(sys.executable, ['python'] + sys.argv)

Sometimes it is not successful and I see the following error message. I cannot find any distinguisher between the moments when it works fine and when not.

Traceback (most recent call last):
  File "/opt/rh/rh-python36/root/usr/lib64/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/opt/rh/rh-python36/root/usr/lib64/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "abc.py", line 301, in pinging
    os.execv(sys.executable, ['python'] + sys.argv)
OSError: [Errno 7] Argument list too long

What could I change in the code or how should I restart a script to prevent this error message?

Answer 1

The problem is

Everytime os.execv runs, a new script starts, but the actual running script is not stopped. So by this sys.argv is becoming longer until it gives the error.

The solution is

Avoid that a new script starts by handling the situation in another way.