Python进制转换(二进制、十进制和十六进制)
计算机运算会用到四种进制方法:二进制、八进制、十进制、十六进制。四者之间的转换在python是非常简单的,因为python默认自带的函数已经帮我们实现了。具体示例如下:
1>>> hex(10)
2'0xa'
3>>> oct(8)
4'010'
5>>> oct(10)
6'012'
7>>> bin(10)
8'0b1010'
9>>> int('0xa',16)
1010
11>>> int('010',8)
128
13>>> int('0b1010',2)
1410
15>>> int('0xA',16)
1610
除此之外你也可以参考下如下代码,还是有点意义的:
1#!/usr/bin/env python
2# coding=utf8
3# ===============================================================================
4# Copyright (C) 2018 www.361way.com site All rights reserved.
5# Description :bin oct dec hex convert (进制转换)
6# ===============================================================================
7import os,sys
8# global definition
9# base = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F]
10base = [str(x) for x in range(10)] + [ chr(x) for x in range(ord('A'),ord('A')+6)]
11# bin2dec
12# 二进制 to 十进制: int(str,n=10)
13def bin2dec(string_num):
14 return str(int(string_num, 2))
15# hex2dec
16# 十六进制 to 十进制
17def hex2dec(string_num):
18 return str(int(string_num.upper(), 16))
19# dec2bin
20# 十进制 to 二进制: bin()
21def dec2bin(string_num):
22 num = int(string_num)
23 mid = []
24 while True:
25 if num == 0: break
26 num,rem = divmod(num, 2)
27 mid.append(base[rem])
28 return ''.join([str(x) for x in mid[::-1]])
29# dec2hex
30# 十进制 to 八进制: oct()
31# 十进制 to 十六进制: hex()
32def dec2hex(string_num):
33 num = int(string_num)
34 mid = []
35 while True:
36 if num == 0: break
37 num,rem = divmod(num, 16)
38 mid.append(base[rem])
39 return ''.join([str(x) for x in mid[::-1]])
40# hex2tobin
41# 十六进制 to 二进制: bin(int(str,16))
42def hex2bin(string_num):
43 return dec2bin(hex2dec(string_num.upper()))
44# bin2hex
45# 二进制 to 十六进制: hex(int(str,2))
46def bin2hex(string_num):
47 return dec2hex(bin2dec(string_num))
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- Author: shisekong
- Link: https://blog.361way.com/python-hex-convert/5781.html
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