How to run a background process in a VM

we wrote a utility ( used in our Jupyter notebook) to execute commands in remote VM – see below

manager.executeCommandsParallel(“sudo python3 Basic-Traffic-Generator/TrafficGenerator.py -r &”, “C-4-1-1”, returnOutput=True)

This utility runs a Trafficgenerator python script and waits to receive packets at node C-4-1-1.

I would like to execute this in multiple VMs. So I tried to run it in background, so I can start this utility in multiple nodes. But the cell hangs. Is there a way to resolve this

thanks