Set up Python 3

1.  Try to download the Python 3.7 for Window from "https://www.python.org/downloads/"
2.  Create a folder in C:/ namely: Python3
3.  Run the downloaded file, tick Add Path
4.  Press Alt+R then type Regedit
Changing  "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem@LongPathsEnabled to 1."