Python進位轉換

#!/usr/bin/env python# encoding: utf8import os, sys#global definition# base = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F]base = [str(x) for x in range(10)] + [chr(x) for x in range(ord('A'),ord('A')+6)]def bin2dec(str_num):    """二進位轉十進位"""    return str(int(str_num, 2))def hex2dec(str_num):    """十六進位轉十進位"""    return str(int(str_num, 16))def dec2bin(str_num):    """十進位轉二進位"""    num = int(str_num)    mid = []    while True:        if num== 0: break        num, rem = divmod(num, 16)        mid.append(base[rem])    return ''.join([str(x) for x in mid[::-1]])def hex2bin(str_num):    """十六進位轉二進位"""    return dec2bin(hex2dec(str_num))def bin2hex(str_num):    """二進位轉十六進位"""    return dec2hex(bin2dec(str_num))