def xpath_direct_adjacent_combinator(self, left, right):
        """right is a sibling immediately after left"""
        xpath = left.join('/following-sibling::', right)
        xpath.add_name_test()
        return xpath.add_condition('position() = 1')
right is a sibling immediately after left
stackoverflow/venv/lib/python3.6/site-packages/cssselect/xpath.py