Inc1B

def incALot(y):
    x = 0
    while x < y:
        x += 1

@njit('i8(i8)')
def nbIncALot(y):
    x = 0
    while x < y:
        x += 1
    return x

size = 1000000000
start = time.time()
incALot(size)
t1 = time.time() - start
start = time.time()
x = nbIncALot(size)
t2 = time.time() - start
print('CPython3 takes %.3fs, Numba takes %.9fs' %(t1, t2))
print('Speedup is: %.1f' % (t1/t2))
print('Just Checking:', x)

CPython3 takes 58.958s, Numba takes 0.000007153s
Speedup is: 8242982.2
Just Checking: 1000000000