Python-59：RGB色值转换为整数值

问题描述

小M需要一个函数，用于将RGB颜色值转换为相应的十六进制整数值。RGB色值以字符串的形式给出，如"rgb(192, 192, 192)"，需要转换为对应的整数值。

代码

import re

def solution(rgb):

    # Please write your code here

    mc = re.findall(r'\d+', rgb)

    if not mc or len(mc) != 3:

        raise ValueError('Invalid rgb')

    mc = list(map(int, mc))

    if any(d < 0 or d > 255 for d in mc):

        raise ValueError('Invalid rgb')

    # Method 1: Using bitwise operations

    result1 = (mc[0] << 16) + (mc[1] << 8) + mc[2]

    # Method 2: Using formatted string and parsing to int

    result2 = int(''.join(f'{x:02x}' for x in mc), 16)

    if result1 == result2:

        return result1

    raise ValueError

if __name__ == "__main__":

    #  You can add more test cases here

    print(solution("rgb(192, 192, 192)") == 12632256 )

    print(solution("rgb(100, 0, 252)") == 6553852)

    print(solution("rgb(33, 44, 55)") == 2174007)