[Tutor] Python .decode issue

[eryksun]

On Tue, Feb 11, 2014 at 3:42 AM, Peter Otten <__peter__ at web.de> wrote:
>
> Unfortunately the bytes --> bytes conversion codecs in Python 2 have no
> convenient analog in Python 3 yet.
>
> This will change in Python 3.4, where you can use
>
>>>> import codecs
>>>> codecs.decode(b"ff10", "hex")
> b'\xff\x10'
>>>> codecs.encode(b"\xff\x10", "hex")
> b'ff10'

3.4 restores the "hex" alias to encodings.aliases.aliases. You can use
"hex_codec" in earlier versions.

    >>> codecs.encode(b"\xff\x10", "hex_codec")
    b'ff10'
    >>> codecs.decode(b"ff10", "hex_codec")
    b'\xff\x10'

> But for now you are stuck with binascii.b2a_hex() etc.

The alternate names are binascii.hexlify and binascii.unhexlify.

    >>> binascii.hexlify(b'\xff\x10') # b2a_hex
    b'ff10'
    >>> binascii.unhexlify(b'ff10')   # a2b_hex
    b'\xff\x10'