docs: add didact examples for presentations #6

	# This workflow will install dependencies and run style check with a variety of Python
	# versions.

	name: on PR against main

	on:
	pull_request:
	branches: [main]

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.8, 3.9, "3.10"]
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r requirements.txt
	python -m pip install -r requirements-dev.txt

	- name: Run Black style check on source code
	run: black --check ./data-preparation/spark ./social-network-analysis

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