sachaa-thanasius / fastercast

fastercast

An attempt at making Python's typing.cast faster by writing in C.

Random Benchmark

Calculated by running python benchmark.py on Windows 10 (WSL). It's not comprehensive, but it shows potential:

Python3.9:

python version: 3.9
---- Testing with type: list[int] ----
typing.cast:     3.465584092999052
fastercast.cast: 1.9172640960023273
no cast:         1.4130047959988588

---- Testing with type: <class 'list'> ----
typing.cast:     3.4464493919986126
fastercast.cast: 1.9092626999990898
no cast:         1.4313703090010677

---- Testing with type: 'list' ----
typing.cast:     3.424010521001037
fastercast.cast: 1.9051031120034168
no cast:         1.463806901996577

Python3.12:

python version: 3.12
---- Testing with type: list[int] ----
typing.cast:     2.0208555909994175
fastercast.cast: 1.5888119939991157
no cast:         1.2391334939966328

---- Testing with type: <class 'list'> ----
typing.cast:     2.0552524880004057
fastercast.cast: 1.558741792003275
no cast:         1.2164903929988213

---- Testing with type: 'list' ----
typing.cast:     2.1068942889978644
fastercast.cast: 1.5963142889995652
no cast:         1.226719090998813