Test frameworks to test embedded system in Python

I would like to test different application on embedded system. Simply I connect to a board using dbg through the command line in Windows and test different applications build within the board. I have checked online and subprocess is the closes to what I am looking for and still can't find any good explonation on how to use it because I can't run my dbg through it. Bellow is basically what I am trying to do:

#!/usr/bin/python
def testAppOne():
# connect to dbg, load the app though it and grab the logs
pass

def testAppTwo():
...
pass

So my question is what specific frameworks can help me with this problem. Thank you