Python题解 | #进制转换#

import math

while True:
    try:
        str1 = input()[2:]
        sum = 0
        j = 0
        dict1 = {
            "0": 0,
            "1": 1,
            "2": 2,
            "3": 3,
            "4": 4,
            "5": 5,
            "6": 6,
            "7": 7,
            "8": 8,
            "9": 9,
            "A": 10,
            "B": 11,
            "C": 12,
            "D": 13,
            "E": 14,
            "F": 15,
        }
        for i in str1:
            a = dict1[i]
            ex = len(str1) - 1 - j
            sum += a * math.pow(16, ex)
            j += 1
        print(int(sum))
    except:
        break