Sorry, just forgot on step 3. after the 3 files have been saved into the Documents folder, they need the executable permission. Open the terminal and run these 2 commands:
cd Documents
chmod +x perc.py perc_minus.py perc_plus.py
Sorry, just forgot on step 3. after the 3 files have been saved into the Documents folder, they need the executable permission.
Open the terminal and run these 2 commands:
cd Documents
chmod +x perc.py perc_minus.py perc_plus.py