Question

I want to generate random number between 0 to 3.8 million in python but it takes 1 second to generate such number, so is there any good way to generate it in a faster way ?

from random import randint

randomIndex = randint(1, 3800000)
print randomIndex

This is tacking 1 second, not every time, but sometimes so I want to optimize it so is there any solution ?

Also some good algorithm ?

Answer 1

If you want to speedup your code, you can try to use numpy package.

On my system, random give me:

$ python -mtimeit "from random import randint" "randint(1, 3800000)"
100000 loops, best of 3: 9.14 usec per loop

And numpy:

$ python -mtimeit "from numpy import random" "random.randint(1, 3800000)"
100000 loops, best of 3: 3.6 usec per loop

With a ~2.5x speedup.