Em Thu, 10 Jul 2025 10:19:31 +0200
Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> escreveu:
> Em Thu, 10 Jul 2025 09:13:52 +0200
> Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> escreveu:
>
> Heh, on those times where LLM can quickly code trivial things for us,
> I actually decided to test 3 different variants:
>
> - using string +=
> - using list append
> - using __add__
> - using __iadd__
Manually reorganized the LLM-generated code, in order to get more
precise results. Script enclosed at the end.
$ for i in python3.9 python3.13 python3.13t; do echo " $i:"; $i /tmp/bench.py 100000 10 1; $i /tmp/bench.py 1000 1000 1; done
python3.9:
10 strings in a loop with 100000 interactions, repeating 24 times
str += : time: 25.21
list join : time: 72.65: 188.18% slower than str +=
__add__ : time: 71.82: 184.88% slower than str +=
__iadd__ : time: 67.84: 169.09% slower than str +=
1000 strings in a loop with 1000 interactions, repeating 24 times
str += : time: 24.29
list join : time: 58.76: 141.88% slower than str +=
__add__ : time: 58.68: 141.54% slower than str +=
__iadd__ : time: 55.48: 128.37% slower than str +=
python3.13:
10 strings in a loop with 100000 interactions, repeating 24 times
str += : time: 28.01
list join : time: 32.46: 15.91% slower than str +=
__add__ : time: 52.56: 87.66% slower than str +=
__iadd__ : time: 58.69: 109.55% slower than str +=
1000 strings in a loop with 1000 interactions, repeating 24 times
str += : time: 22.03
list join : time: 23.38: 6.12% slower than str +=
__add__ : time: 44.25: 100.86% slower than str +=
__iadd__ : time: 40.70: 84.74% slower than str +=
python3.13t:
10 strings in a loop with 100000 interactions, repeating 24 times
str += : time: 25.65
list join : time: 74.95: 192.18% slower than str +=
__add__ : time: 83.04: 223.71% slower than str +=
__iadd__ : time: 79.07: 208.23% slower than str +=
1000 strings in a loop with 1000 interactions, repeating 24 times
str += : time: 57.39
list join : time: 62.31: 8.58% slower than str +=
__add__ : time: 70.65: 23.10% slower than str +=
__iadd__ : time: 68.67: 19.65% slower than str +=
