Python3 randrange giving same result

So I'm making a small text-game and one of the things I want to do is to get a random number from a range of variables.

For testing purposes I've written a code looks something like this:

slow_speed = random.randrange(10,25)
medium_speed = random.randrange(26, 50)
fast_speed = random.randrange(51, 75)

penalty_list = [slow_speed, medium_speed, fast_speed]

for i in range(3):
    for penalty in penalty_list:
        print(penalty)

The idea is that it would loop over the list 3 times and each time give a different random number for each range.

However, what happens is that I get the same 3 numbers looped 3 times. I figured it was because the seed(time on my computer) is the same when I invoke the function, so I've tried to add a time.sleep() and a random.seed() but that didn't help.

So how can I fix this? Thanks!