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Showing content from https://mail.python.org/pipermail/python-dev/2015-October/142050.html below:

[Python-Dev] Should PEP 498 specify if rf'...' is valid?

[Python-Dev] Should PEP 498 specify if rf'...' is valid?Sven R. Kunze srkunze at mail.de
Tue Oct 27 17:54:12 EDT 2015
On 27.10.2015 22:19, Eric V. Smith wrote:
> On Oct 27, 2015, at 4:39 PM, Mark Lawrence <breamoreboy at yahoo.co.uk> wrote:
>>> On 27/10/2015 18:39, Sven R. Kunze wrote:
>>>> On 26.10.2015 20:54, Ethan Furman wrote:
>>>> You misunderstand -- the order of string prefixes does *not* matter,
>>>> so forcing us to use one is silly.
>>> I don't think so.
>>>
>>> It's better to have less possibilities in the beginning. So later on, we
>>> can easily relax the restrictions without breaking compatibility.
>>>
>>> Best,
>>> Sven
>> Please no.  Having a memory much like a bottomless sieve I have no intention of reading the manual every time I need to use string prefixes.  Would the table listing "string prefix precedence" in The Fine Docs™ be unique in the programming world?
> Plus, it's too late for this. What would the manual say: "either br or rb is okay, but you if you want fbr you can't spell it frb."? (Assuming we add binary f-strings.)
>
> Let's just leave it as any order, and with any capitalization.

It was just for the protocol. The harm is already done. ;-)

Best,
Sven
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