create pytest code example

Example 1: python run pytest

Just type this in shell:
pytest

Or this if that does nott work:
python -m pytest

Example 2: pytest create server

def server(host, port):
    # definition of your server

@pytest.fixture(autouse=True, scope="session")
def start_server():
    p = multiprocessing.Process(target=server, args=(host, port))
    p.start()
    yield
    p.terminate()