Then in some cases we need to shutdown one of them and some time later we want to re-start ( spawn) another background process again. This is a small piece of my code: print 'Execute command:', fullcommand subprocess.Popen (fullcommand, stdinNone, stdoutNone, stderrNone, closefdsTrue).communicate () print. In our Python application we spawn some background processes when the program starts up. The called subprocess is a shell script, which does a lot of different things. Subprocess.Popen('nohup usr/local/bin/otherscript. I'm trying to run a subprocess in a background, without wait for subprocess execution.

The general syntax is: subprocess: 1 2 import subprocess subprocess.Popen() os: 1 2 import os os.

If you want to execute it in Background I recommend you to use nohup output that would normally go to the terminal goes to a file called nohup.out import subprocess In Python, any of the two packages, namely, subprocess and os, can be used to run background processes. If you want to be sure that it has completed, run p.wait(). This alternative still lets you run the command in background but is safe because it uses the default shell=False: p = subprocess.Popen(command_list)Īfter this statement is executed, the command will run in background. Don't do this unless command including thingy comes from sources that you trust. For example, sys.

Using shell=True enables all of the shell's features. sys.executable is the absolute path to the Python executable that your program was originally invoked with. The problem is the first script afauditrun.py, which is supposed to exit soon after the second script returns the request id, is waiting for the entire background process to finish. Since shell=True, the above uses command, not command_list. The second script requestaudit.py invokes another subprocess in the background and returns a request id. This will allow you to run command in background.

If you want it to work with subprocess, you must specify shell=True like: subprocess.call(command, shell=True)

Python subprocess in background