[Python-3000] Immutable bytes type and bsddb or other IO

[Greg Ewing]

Guido van Rossum wrote:
> there's collusion between the bytes and unicode
> types so that this works:
> 
>   b = b"abc"
>   b[1:2] = "X"

Is this intentional? Doesn't it run counter to the idea
that text and bytes should be clearly separated?

> Unfortunately taking the buffer API away from unicode makes things
> fail early

If the buffer API distinguishes between text and binary
buffers, then the binary streams can just accept binary
buffers only, and unicode can keep its buffer API.

--
Greg