The repository consists of code copied from PyImageSearch. The purpose of the repository is to have the code and samples files in one place (when you don't have the membership.)
PyImageSearch has an extensive written tutorial available here. Head over to the relevant article to understand how the whole code works.
What things you need to install the software and how to install them.
python -m venv ./venvTo get the speedup and time measurement, use the time command in terminal. To get a better visual, use /usr/bin/time -p.
/usr/bin/time -p python extract.py -i 101_ObjectCategories -o temp_output -a hashes.pickle -p 4