get_first_node.py

# Original
def first(node, css, expected):    
    result = str(node.css(css).get())
    if result is None:
        raise ParseException(f"Could not parse the {expected}")
    return result

  
# Refactored
def first(node, css, expected) -> str:
    match node.css(css).get():
        case str(result):
            return result
        case _:
            raise ParseException(f"Could not parse the {expected}")