python binascii 進制轉(zhuǎn)換實例

#coding:utf-8

import binascii

a = 'worker'

#先把worker轉(zhuǎn)換成二進制數(shù)據(jù)然后在用十六進制表示

b = binascii.b2a_hex(a)

print b

#與b2a_hex相反

print binascii.a2b_hex(b)

#這個功能和b2a_hex()一樣

c = binascii.hexlify(a)

print c

#這個功能和a2b_hex()一樣

print binascii.unhexlify(c)

######運行結(jié)果######

>>> 776f726b6572

worker

776f726b6572

worker 


python內(nèi)置函數(shù)：


hex():

#把10進制轉(zhuǎn)整形換成16進制

>>> hex(88)

'0x58'

#把浮點型轉(zhuǎn)換成16進制

>>> 1.23.hex()

'0x1.3ae147ae147aep+0'

#內(nèi)置函數(shù)hex和binascii.hexlify()的區(qū)別就在于，

#hex只能接受整形不能接受字符串

>>> hex('88')

Traceback (most recent call last):

 File "<pyshell#26>", line 1, in <module>

 hex('88')

TypeError: hex() argument can't be converted to hexbin():ba 





bin():把十進制整形轉(zhuǎn)換成二進制字符

#把十進制整型轉(zhuǎn)換成二進制

>>> bin(88)

'0b1011000'

>>> bin(33)

'0b100001' 



oct():把十進制轉(zhuǎn)換成八進制字符

#把十進制轉(zhuǎn)換成八進制

>>> oct(500)

'0764'

>>> oct(488)

'0750' 


chr():把一個整形轉(zhuǎn)換成ASCII碼表中對應(yīng)的單個字符 

#把一個整形轉(zhuǎn)換成ASCII碼表中對應(yīng)的單個字符

>>> chr(98)

'b'

>>> chr(97)

'a' 

ord():和chr相反，把ASCII碼表中的字符轉(zhuǎn)換成對應(yīng)的整形

>>> ord('b')

98

>>> ord('c')

99