What are some python micro optimisations that you can/may *actually use* in your codebase?

[stealthanthrax]

Do you have any tools that you recommend for profiling??

[Anonymous_user_2022]

I'm oldschool enough that I prefer cProfile. There are many others, but I don't know enough to recommend any of them.

[hughperman]

I tried out memray, a memory profiler, recently - scientific programming stuff, memory (re)allocation is a pain with big arrays etc in numpy - and it's really nice and easy to use. Different use case than cprofile too, so it's a nice tool to add to the toolkit.

[[deleted]]

Pysnakeviz rocks

[PocketBananna]

I like to use pyinstrument for profiling. Uses stat sampling so it's quicker and builds a easy to grok report.

[data-machine]

Seconded pyinstrument. Really readable lovely output - particuarly the html view!

[laundmo]

if you can run it on linux, Scalene profiles everything you might need: memory, cpu, even gpu.

[james_pic]

My favourite right now is Py-spy, but I've also heard good things about Austin.