Why This Python Performance Trick Doesn’t Matter Anymore

TLDR: 3.11 is twice as fast as 3.10 at doing global name lookups, so an old speedup hack of aliasing a global function locally isn't needed.

For example, when calling len() in a loop, going l=len, and calling l() in the loop was faster in 3.10. In 3.11, moreso in 3.13, it's almost a wash.

However, the author says this:

Accessing functions through a module [e.g. math.sin()] or a deep attribute chain can still carry overhead. Creating a local alias or using "from module import name" continues to be effective in those situations.

But when I look at the numbers, I would say 3.13 is pretty close to making it an unnecessary optimization in general. A little subjective on how you interpret the numbers.

Great info, but this was like trying to use a recipe and reading the author's life story to get there.