Well - one can already do:
x = bytes.fromhex
x("01 23 45 67 89")
As for base64, I really, really, don't see a use case where allowing base64
native strings as
part oif the syntax could be useful - less so when decoding is one call
away.
Base64 was already created to allow one to convey arbitrary data as strings
- let them be strings,
As for the "x" mode: I think the burden - including cognitive when teaching
Python - to include
new prefix strings easily overcome any gains there might be - again, more
so once that
a call like `bytes.frohex` is readily available.
js
-><-
On Wed, Nov 23, 2022 at 9:33 AM Ronald Hoogenboom via Python-ideas <
python-ideas@python.org> wrote:
> Refer to PEP 3137 and PEP 358.
>
>
>
> Bytes objects are for conveying binary data (or encoded strings). Such
> binary data is customary specified in hex-dump or base64 format in source
> files.
>
> It would be nice to introduce a way in python to do that ‘natively’ (at
> lexical analysis time) using x-strings and y-strings (in lieu of f-strings).
>
>
>
> x-strings:
>
>
>
> x”0123456789abcdef” (x-prefixed quoted string of
> even-numbered amount of characters of the set [0-9a-fA-F], whitespace
> ignored)
>
> equivalent to:
>
> b”\x01\x23\x45\x67\x89\xab\xcd\xef” (but more readable)
>
>
>
> y-strings:
>
>
>
> y”ASNFZ4mrze8=” (y-prefixed quoted string of valid base64,
> whitespace ignored)
>
> equivalent to:
>
> b”\x01\x23\x45\x67\x89\xab\xcd\xef” (but shorter)
>
>
>
> This is not a replacement of the hex/base64 encoding, binascii packages
> etc. It just gives the programmer more freedom to specify literal bytes
> objects in the source code.
>
>
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