Python中不同进制互相转换(二进制、八进制、十进制和十六进制)
Jun 10, 2016 pm 03:16 PM
python
binary
Octal
hexadecimal
decimal
在我的印象里面进制互相转换确实是很常见的问题,所以在Python中,自然也少不了把下面这些代码收为util。
这是从网上搜索的一篇也的还可以的Python进制转换,经过验证可以使用。下面贴出它的实现代码:
#!/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))
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