If you would like to run the program from scripts, you need to install Python 3.5 or later.

To run the program from scripts on macOS or Linux:

cd /path/to/File-Vault
pip3 install -r requirments.txt
python3 'File Vault.py'

On Windows, issue the similar commands on a cmd prompt.

Linux, macOS and Windows executables are also available here, for which you don't need to install python3 and other requirements. Double-click on the executable, and everything is ready for you.