[Python-Dev] PEP 461: Adding % formatting to bytes and bytearray -- Final, Take 3 (original) (raw)

Ethan Furman ethan at stoneleaf.us
Thu Mar 27 17:08:03 CET 2014

On 03/27/2014 04:24 AM, Antoine Pitrou wrote:

On Tue, 25 Mar 2014 15:37:11 -0700 Ethan Furman wrote:

%a will call ascii() on the interpolated value. This is intended as a debugging aid, rather than something that should be used in production. Non-ASCII values will be encoded to either \xnn or \unnnn representation. Use cases include developing a new protocol and writing landmarks into the stream; debugging data going into an existing protocol to see if the problem is the protocol itself or bad data; a fall-back for a serialization format; or even a rudimentary serialization format when defining _bytes_ would not be appropriate [8]. The "use cases" you are enumerating for "%a" are chimeric.

Cool word! Haven't seen it a long time. :)

Did you actually do those things in real life, or are you inventing them for the PEP?

The examples came from Jim Jewett, but I can easily see myself using them.

-- Ethan

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