modify a packages in python tutorial code example

Example 1: how to make python package

# This is too much for a grepper answer, so here is a link to the tutorial:
# https://towardsdatascience.com/how-to-build-your-first-python-package-6a00b02635c9

Example 2: pypi release

python3 setup.py sdist bdist_wheel
twine upload dist/*