mixed_poisson projection error in work #353

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python

	name: Python package

	on:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.10"]

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8
	- name: Lint with flake8
	run: \|
	flake8 --exit-zero .
	flake8 ./demo/poisson_equation_dlrbnicsx
	flake8 ./demo/poisson_equation_dlrbnicsx_distributed
	flake8 ./demo/poisson_non_linear_geometric_parametrization
	flake8 ./demo/poisson_non_linear_geometric_parametrization_distributed
	flake8 ./demo/stokes_flow_dlrbnicsx
	flake8 ./demo/stokes_flow_dlrbnicsx_distributed

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