On Wed, Dec 21, 2022 at 8:34 AM Jeremiah Paige <ucodery@gmail.com> wrote:
That's interesting, for me both 3.9 and 3.10 show the f-string more than 5x faster. This is just timeit on f'{myvar}' vs ''.join((myvar,)) so it may not be the most nuanced comparison for a class property. Probably unsurprisingly having myvar be precomputed as the single tuple also gives speedups, around 45% for me.
That may be the optimization that 3.11 is doing for you :-) Now that I think about it, if this is immutable, which it should be, as it's a str subclass, then perhaps the data string can be pre-computed, as it was in the original. I liked the property, as philosophically, you don't want to store the same data twice, but with an immutable, there should be no danger of it getting out of sync, and it would be faster. (though memory intensive for large strings). -CHB
So if just speed is wanted maybe inject the tuple pre-constructed.
~ Jeremiah
On Wed, Dec 21, 2022 at 1:19 AM Steven D'Aprano <steve@pearwood.info> wrote:
On Tue, Dec 20, 2022 at 11:55:49PM -0800, Jeremiah Paige wrote:
@property def data(self): return f"{self}"
By my testing, on Python 3.10, this is slightly faster still:
@property def data(self): return "".join((self,))
That's about 14% faster than the f-string version.
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