Add constituency methodology documentation #43

	# This workflow is used to check various parts of the
	# run prior to merging:

	# - The code's formatting
	# - Versioning - note that this checks, but does not update
	# - That the code builds successfully
	# - That any automated tests pass
	name: Pull request

	on:
	pull_request:
	branches: [main]

	jobs:
	lint:
	runs-on: ubuntu-latest
	name: Lint
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: 3.12
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install black
	- name: Check formatting
	run: black . -l 79 --check
	test:
	name: Build and test
	runs-on: ubuntu-latest
	env:
	HUGGING_FACE_TOKEN: ${{ secrets.HUGGING_FACE_TOKEN }}
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0 # Fetch all history for all tags and branches
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: 3.12
	- name: Install package
	run: make install
	- name: Download data inputs
	run: make download
	env:
	HUGGING_FACE_TOKEN: ${{ secrets.HUGGING_FACE_TOKEN }}
	- name: Build datasets
	run: make data
	- name: Run tests
	run: pytest
	- name: Test documentation builds
	run: make documentation

	- name: Check documentation build
	run: \|
	for notebook in $(find docs/_build/jupyter_execute -name "*.ipynb"); do
	if grep -q '"output_type": "error"' "$notebook"; then
	echo "Error found in $notebook"
	cat "$notebook"
	exit 1
	fi
	done

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