[Python-3000] bytes: compare bytes to integer

[Bill Janssen]

> I don't like the behaviour of Python 3000 when we compare a bytes strings
> with length=1:
>    >>> b'xyz'[0] == b'x'
>    False
> 
> The code can be see as:
>    >>> ord(b'x') == b'x'
>    False
> 
> or also:
>    >>> 120 == b'x'
>    False
> 
> Two solutions:
>  1. b'xyz'[0] returns a new bytes object (b'x' instead of 120) 
>     like b'xyz'[0:1] does
>  2. allow to compare a bytes string of 1 byte with an integer
> 
> I prefer (2) since (1) is wrong: bytes contains integers and not bytes!

Why not just write

   b'xyz'[0:1] == b'x'

in the first place?  Let's not start adding "special" cases.

Bill