what about if you launch Python in the command line and run the following:
import os
os.system(r'start /B "App" "C:\Program Files\Autodesk\Maya2019\bin\maya.exe')
what about if you launch Python in the command line and run the following:
import os
os.system(r'start /B "App" "C:\Program Files\Autodesk\Maya2019\bin\maya.exe')