Can i prevent the random generator to generate already used numbers?

[MauserMan]

Hi all!

I'm new to Python and played around a bit with the random module a little as a part of my learning process.
I wanted to do i lottery game that randomly spits out 7 numbers in the range of 1 to 34 and puts them in a list.

The problem is that the random generator will generate the same number more than once. I was able to solve this by generating a new set of numbers if doubles were found. But what i would prefer to do is preventing the random generator to generate already used numbers, as it would in a real lottery game. The used numbers should be excluded from the random generator so to speak. Is this possible to do?

Thanks a lot for your help!

 for x in range(0, 7): lottorad[x] = random.randint(1, 34)

[ichabod801]

Look at random.sample()

[_ShevaKadu]

If you don't want the outputs to repeat
, you can make a list and a if statement to check if there such output in the list. Here's the code:

outputs = [] for x in range(7): lottorad[x] = random.randint(1, 34) if lottorad[x] in outputs: lottorad[x] = random.randint(1, 34) else: outputs.append(lottorad[x])

Sorry, if the script doesn't work. I just keep entering 'lottorad[x]' like a name of a variable

[MauserMan]

Thanks a lot all for your help, random.sample did the trick.


My code went from this:

import random lottorad = [0, 0, 0, 0, 0, 0, 0] unik_rad = False while unik_rad == False: for x in range(0, 7): lottorad[x] = random.randint(1, 34) # lottoraden är nu fylld med 7 nummer. # kontrollerar om samtliga nummer i lottoraden är unika for x in range(1, 35): lika = lottorad.count(x) if lika > 1: # minst två lika nummer har hittats unik_rad = False break else: unik_rad = True lottorad.sort() print(lottorad)

to this:

import random lottorad = [] lottorad = random.sample(range(1, 34), 7) lottorad.sort() print(lottorad)

Thanks again, problem solved