Here's a way of ensuring no number is repeated twice:
Code:values = {'num1':0,'num2':0,'num3':0,'num4':0,'num5':0,'num6':0} for i in range(1, 7): rdint = randint(1, 25) while rdint in values.values(): rdint = randint(1, 25) values['num'+str(i)] = rdint