python 字符串与16进制互转

>>> binascii.b2a_hex(u"你好啊".encode("utf8"))
'e4bda0e5a5bde5958a'
>>>
>>>
>>> binascii.b2a_hex(u"你好啊".encode("gbk"))
'c4e3bac3b0a1'
>>> binascii.a2b_hex("e4bda0e5a5bde5958a")
'\xe4\xbd\xa0\xe5\xa5\xbd\xe5\x95\x8a'
>>> binascii.a2b_hex("e4bda0e5a5bde5958a").decode("utf8")
u'\u4f60\u597d\u554a'
>>> print binascii.a2b_hex("e4bda0e5a5bde5958a").decode("utf8")
你好啊
>>> binascii.b2a_hex(u"你好啊121A号".encode("gbk"))
'c4e3bac3b0a131323141bac5'
>>> '48656c6c6f'.decode('hex')
'Hello'
>>> 'c4e3bac3b0a131323141bac5'.decode('hex')
'\xc4\xe3\xba\xc3\xb0\xa1121A\xba\xc5'
>>> print 'c4e3bac3b0a131323141bac5'.decode('hex')
你好啊121A号
>>> u"你好啊121A号".encode("gbk").encode('hex')
'c4e3bac3b0a131323141bac5'
>>>