how I made my import sorter 7x faster (intermediate) anthony explains

[@tobb10001]

How can dead code be slow? I thought dead code was code, that cannot be reached and thus never runs. How would code that never runs slow down anything else but compiling?

[@anthonywritescode]

the branch is never taken, but the condition is still evaluated every time

[@davititchanturia]

code runs in 0.0001 anthony : needs optimising

[@clementrobert8635]

You said there would eventually be a C implementation of the tokenize module. Do you know where I can learn more about this ? (I couldn't find any PEP or relevant discussion)

[@anthonywritescode]

there's no PEP because it's just exposed privately -- github.com/python/cpython/blob/aa37ffda29ac48fb2df5a7029ba2e626ecc45850/Lib/tokenize.py#L685-L690

[@ArielVolovik]

Why wasn't it possible to cache classify_base in the original third party package. Why is it a breaking change?

[@anthonywritescode]

mutable inputs

[@ArielVolovik]

@@anthonywritescode oh - I thought lru_cache would cache the return of the function as long as the input params to the function are the same. So it would handle different inputs just fine

[@anthonywritescode]

that is exactly how it works yes, but how do you know when inputs are "different"?

[@ArielVolovik]

@@anthonywritescode I thought it had a mapping of the form {input1: result1, input2: result2, ...} "under the hood"

[@anthonywritescode]

and say you had a cached function `f` you call it once: ``` x = [1, 2, 3] f(x) ``` and then you run ``` x.append(4) f(x) ``` what should the cache do? (I think I go over this in more detail in kzbin.info/www/bejne/gWG0Zqetqb6rjbs )

[@akshaymestry7503]

Anthony, dude... you gotta share the theme file with us man! The theme looks so OP!

[@anthonywritescode]

I think it's "gruvbox hard" not sure though -- it was set by twitch chat

[@alexeyzhurov7747]

Anthony: 0.1s delay is too much, needs optimization. Legacy code in my project: change this string and it will be 4 seconds faster :)

[@adwaith-rajesh]

whats the theme 🌝

[@anthonywritescode]

I think it's "gruvbox hard" not sure though -- it was set by twitch chat

[@ericng8807]

"how I made my import sorter BLAZINGLY FASTer (intermediate)"

[@sq546]

is it 5 or 7? waaah

[@anthonywritescode]

it's 7 -- see the description!

[@chp3226]

fr