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")
"xe4xbdxa0xe5xa5xbdxe5x95x8a"
>>> binascii.a2b_hex("e4bda0e5a5bde5958a").decode("utf8")
u"u4f60u597du554a"
>>> 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")
"xc4xe3xbaxc3xb0xa1121Axbaxc5"
>>> print "c4e3bac3b0a131323141bac5".decode("hex")
你好啊121A号
>>> u"你好啊121A号".encode("gbk").encode("hex")
"c4e3bac3b0a131323141bac5"
>>>