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From: Peter Otten <__peter__@web.de>
Subject: Re: python3 binascii.hexlify ...
Date: Sat, 09 Feb 2013 12:10:36 +0100
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Xref: csiph.com comp.lang.python:38505

Cameron Simpson wrote:

> This seems to return a bytes object in Python 3.3.0. I was expecting a
> string. The documentation here:
> 
>   http://docs.python.org/3/library/binascii.html#binascii.hexlify
> 
> also keeps me expecting a string. Am I missing something?

"""Return the hexadecimal representation of the binary data. Every byte of 
data is converted into the corresponding 2-digit hex representation.
"""

makes it pretty clear that the function is operating on bytes, not str.

The following sentence "The resulting string..." is likely a leftover from 
Python 2 and should be fixed.

If you need str instead of bytes it's easy enough to do the 
encoding/decoding yourself:

>>> import binascii as ba
>>> ba.hexlify("äöü".encode())
b'c3a4c3b6c3bc'
>>> ba.unhexlify(_).decode()
'äöü'