I am trying to copy content from one portal to another with python only, without using AGO assistant https://ago-assistant.esri.com/, as this doesn't work behind our firewall in our test network. I have explored these links for obtaining the correct python script to be able to perform the task: https://github.com/Esri/ago-tools/tree/master/samples but I don't know which script works for the copying of content from one to another? If anyone has used these, simply pass on the name of the script and that will suffice this request?
To do this I suggest looking at Esri's portalpy which is:
A module that allows you to administer Portal for ArcGIS and ArcGIS Online.