如何对罗马数字数组进行排序？

def roman_to_int(roman):
    roman_to_int = {
        'I': 1,
        'V': 5,
        'X': 10,
        'L': 50,
        'C': 100,
        'D': 500,
        'M': 1000
    }
    result = 0
    for i in range(len(roman)):
        if i > 0 and roman_to_int[roman[i]] > roman_to_int[roman[i-1]]:
            result += roman_to_int[roman[i]] - 2 * roman_to_int[roman[i-1]]
        else:
            result += roman_to_int[roman[i]]
    return result

def int_to_roman(num):
    int_to_roman = {
        1000: 'M',
        900: 'CM',
        500: 'D',
        400: 'CD',
        100: 'C',
        90: 'XC',
        50: 'L',
        40: 'XL',
        10: 'X',
        9: 'IX',
        5: 'V',
        4: 'IV',
        1: 'I'
    }
    result = ''
    for value, symbol in int_to_roman.items():
        while num >= value:
            result += symbol
            num -= value
    return result

def sort_roman_numerals(roman_numerals):
    sorted_numerals = sorted(roman_numerals, key=lambda x: roman_to_int(x))
    return [int_to_roman(num) for num in sorted_numerals]