Python:按字母顺序将拼写数字转换为数字？

def spelled_number_to_number(spelled_number: str) -> int:
    spelled_number = spelled_number.lower()
    number = 0
    for char in spelled_number:
        number = number * 10 + ord(char) - ord('a') + 1
    return number

spelled_number = "one"
number = spelled_number_to_number(spelled_number)
print(f"{spelled_number} in number: {number}")