1) open cmd or powershell
2) change directory into where the targeted Qt .ui files located
3) type dir (for cmd) or ls for powershell to confirm the .ui Qt .ui files is really located in the path
4) test one of the Qt .ui files to see what is inside, type in cmd or powershell
notepad.exe welcomeScreen.ui
5) to convert the .ui into .py files, type in cmd or powershell
pyside-uic.exe recoveryScreen.ui -o recoveryScreen.py
pyside-uic.exe welcomeScreen.ui -o welcomeScreen.py
6) and then list the contents of the path to view the files inside it by typing ls (powershell) or dir (cmd)
7) to view the content of .py files, type in the cmd or powershell
notepad.exe recoveryScreen.py
notepad.exe welcomeScreen.py
8) DONE !!