🔒 does type hinting improve performance?

[high tundra]

I know, there's thousands of websites saying it doesn't... but my tests say it actually does and that pretty reliably
code:

from timeit import timeit


def hinting(v: int) -> int:
    a: int = 0
    for _ in range(v):
        a += 1
    return a



def no_hinting(v):
    a = 0
    for _ in range(v):
        a += 1
    return a


x = 10
print("Hinting:", timeit(lambda: hinting(x), number=1000000))
print("No hinting:", timeit(lambda: no_hinting(x), number=1000000))

the hinting() function is faster about 5 times times for every time the no_hinting() function is faster

and trust me, I ran that script very often because I had a little disagreement with chatgpt over it

[still cosmos]

@high tundra

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[nocturne slate]

!timeit

def no_hinting(v):
    a = 0
    for _ in range(v):
        a += 1
    return a

no_hinting(10)

[still cosmos]

:white_check_mark: Your 3.12 timeit job has completed with return code 0.

500000 loops, best of 5: 574 nsec per loop

[nocturne slate]

!timeit

def hinting(v: int) -> int:
    a: int = 0
    for _ in range(v):
        a += 1
    return a

hinting(10)

[still cosmos]

:white_check_mark: Your 3.12 timeit job has completed with return code 0.

500000 loops, best of 5: 664 nsec per loop

[umbral stone]

type hints incur minor overhead

[nocturne slate]

Yeah, that's what I thought
It takes a fraction of a second for the compiler to throw them away

[umbral stone]

it doesn't throw them away

it's parsed, evaluated and stored

[nocturne slate]

oh right
now it keeps them and puts them in annotations

[umbral stone]

it's very impressive when you consider all that is being done in 100ns

i dont actually know if the compiler is doing any optimizations here

[storm osprey]

for sure improves developer performance

[still cosmos]

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