On Fri, Jun 11, 2021 at 10:12 AM Thomas Güttler <info@thomas-guettler.de> wrote:
Am Fr., 11. Juni 2021 um 14:51 Uhr schrieb Ricky Teachey < ricky@teachey.org>:
I think this idea is promising but instead of doing it by adding new syntax and a totally different object, why not attach a __templates__ dunder member to every string but only OPTIONALLY populate it when a string is formatted?
I am very happy that you think this is promising.
Changing the interface of every string in Python feels much too big for me. I don't dare to think about it. I have concerns that it could have negative impacts on parts which I am not aware of.
I'm not a python internals expert, but i am imagining it wouldn't be a very significant performance hog for anyone not interested in the feature... seems like all that would be added is the equivalent of a __slot__ to the str class object, and a reference to None inside it. so the memory footprint of every string object would not have to grow. the class just grows a new dunder. the templated string objects themselves would have to have a bigger memory footprint of course. but the user/developer is choosing to do that by using templated strings. --- Ricky. "I've never met a Kentucky man who wasn't either thinking about going home or actually going home." - Happy Chandler