#!/usr/bin/env python# -*- coding: utf-8 -*-# 2/10/16 base trans. wrote by srcdog on 20th, April, 2009# ld elements in base 2, 10, 16.import 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)]# bin2dec# 二进制 to 十进制: int(str,n=10) def bin2dec(string_num):    return str(int(string_num, 2))# hex2dec# 十六进制 to 十进制def hex2dec(string_num):    return str(int(string_num.upper(), 16))# dec2bin# 十进制 to 二进制: bin() def dec2bin(string_num):    num = int(string_num)    mid = []    while True:        if num == 0: break        num,rem = divmod(num, 2)        mid.append(base[rem])    return ''.join([str(x) for x in mid[::-1]])# dec2hex# 十进制 to 八进制: oct() # 十进制 to 十六进制: hex() def dec2hex(string_num):    num = int(string_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]])# hex2tobin# 十六进制 to 二进制: bin(int(str,16)) def hex2bin(string_num):    return dec2bin(hex2dec(string_num.upper()))# bin2hex# 二进制 to 十六进制: hex(int(str,2)) def bin2hex(string_num):    return dec2hex(bin2dec(string_num))

现有的类型转换函数：

ord()    将字符转换成ASCII

chr()    将ASCII转换成字符

hex()    将整数转换成十六进制

oct()    将整数转换成八进制

bin()    将整数转换成二进制