整数之间的进制转换:

10进制转16进制: hex(16) ==> 0x10
16进制转10进制: int('0x10', 16) ==> 16

类似的还有oct()， bin()

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字符串转整数:

10进制字符串: int('10') ==> 10
16进制字符串: int('10', 16) ==> 16
16进制字符串: int('0x10', 16) ==> 16

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字节串转整数:

转义为short型整数: struct.unpack('<hh', bytes(b'x01x00x00x00')) ==> (1, 0)
转义为long型整数: struct.unpack('<L', bytes(b'x01x00x00x00')) ==> (1,)

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整数转字节串:

转为两个字节: struct.pack('<HH', 1,2) ==> b'x01x00x02x00'
转为四个字节: struct.pack('<LL', 1,2) ==> b'x01x00x00x00x02x00x00x00'

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字符串转字节串:

字符串编码为字节码: '12abc'.encode('ascii') ==> b'12abc'
数字或字符数组: bytes([1,2, ord('1'),ord('2')]) ==> b'x01x0212'
16进制字符串: bytes().fromhex('010210') ==> b'x01x02x10'
16进制字符串: bytes(map(ord, 'x01x02x31x32')) ==> b'x01x0212'
16进制数组: bytes([0x01,0x02,0x31,0x32]) ==> b'x01x0212'

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字节串转字符串:

字节码解码为字符串: bytes(b'x31x32x61x62').decode('ascii') ==> 12ab
字节串转16进制表示,夹带ascii: str(bytes(b'x01x0212'))[2:-1] ==> x01x0212
字节串转16进制表示,固定两个字符表示: str(binascii.b2a_hex(b'x01x0212'))[2:-1] ==> 01023132
字节串转16进制数组: [hex(x) for x in bytes(b'x01x0212')] ==> ['0x1', '0x2', '0x31', '0x32']

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测试用的python源码

import binascii  
import struct  
  
  
def example(express, result=None):  
    if result == None:  
        result = eval(express)  
    print(express, ' ==> ', result)  
  
  
if __name__ == '__main__':  
      
    print('整数之间的进制转换:')  
    print("10进制转16进制", end=': ');example("hex(16)")  
    print("16进制转10进制", end=': ');example("int('0x10', 16)")  
    print("类似的还有oct()， bin()")  
      
    print('
-------------------
')  
      
    print('字符串转整数:')  
    print("10进制字符串", end=": ");example("int('10')")  
    print("16进制字符串", end=": ");example("int('10', 16)")  
    print("16进制字符串", end=": ");example("int('0x10', 16)")  
      
    print('
-------------------
')  
      
    print('字节串转整数:')  
    print("转义为short型整数", end=": ");example(r"struct.unpack('<hh', bytes(b'x01x00x00x00'))")  
    print("转义为long型整数", end=": ");example(r"struct.unpack('<L', bytes(b'x01x00x00x00'))")  
  
    print('
-------------------
')  
  
    print('整数转字节串:')  
    print("转为两个字节", end=": ");example("struct.pack('<HH', 1,2)")  
    print("转为四个字节", end=": ");example("struct.pack('<LL', 1,2)")  
      
    print('
-------------------
')  
      
    print('字符串转字节串:')  
    print('字符串编码为字节码', end=": ");example(r"'12abc'.encode('ascii')")  
    print('数字或字符数组', end=": ");example(r"bytes([1,2, ord('1'),ord('2')])")  
    print('16进制字符串', end=': ');example(r"bytes().fromhex('010210')")  
    print('16进制字符串', end=': ');example(r"bytes(map(ord, 'x01x02x31x32'))")  
    print('16进制数组', end =': ');example(r'bytes([0x01,0x02,0x31,0x32])')  
      
    print('
-------------------
')  
      
    print('字节串转字符串:')  
    print('字节码解码为字符串', end=": ");example(r"bytes(b'x31x32x61x62').decode('ascii')")  
    print('字节串转16进制表示,夹带ascii', end=": ");example(r"str(bytes(b'x01x0212'))[2:-1]")  
    print('字节串转16进制表示,固定两个字符表示', end=": ");example(r"str(binascii.b2a_hex(b'x01x0212'))[2:-1]")  
    print('字节串转16进制数组', end=": ");example(r"[hex(x) for x in bytes(b'x01x0212')]")  
      
      
    print('
===================
')

转自：https://blog.csdn.net/crylearner/article/details/38521685

[转]python常用的十进制、16进制、字符串、字节串之间的转换

整数之间的进制转换:

字符串转整数:

字节串转整数:

整数转字节串:

字符串转字节串:

字节串转字符串:

测试用的python源码