Choose multiple random integers with input

Question

I've been trying to solve this problem. I would like to input a number between 1 and 5. So for example if I choose to input number 3, I want to then randomly choose 3 numbers from a category of numbers between 1 and 10.

Keep in mind that a computer cannot generate really random numbers. It can only generate what are called pseudo-random numbers. Read docs.python.org/library/random.html and en.wikipedia.org/wiki/Random_number_generation. It depends on the application if the numbers generated by the random module are suitable. — Roland Smith
– Roland Smith, Commented Aug 22, 2012 at 8:12
Should the numbers be unique? Also, have you got any code so far? — georg
– georg, Commented Aug 22, 2012 at 8:37
what have you tried? If you post your attempt (however minimal), it helps others in guiding you correctly. — Burhan Khalid
– Burhan Khalid, Commented Aug 22, 2012 at 8:41
Never mind, the answer I was looking for is at the bottom of this page. — Howie
– Howie, Commented Aug 23, 2012 at 5:05

Def_Os · Accepted Answer · 2012-08-22 08:17:46Z

0

import random
random.seed()
a = 1
b = 10
randList = []
for x in range(3):
    # random integer N such that a <= N <= b
    randList.append(random.randint(a, b))

Or better yet:

import random
random.seed()
a = 1
b = 10
randList = [random.randint(a,b) for x in range(3)]

edited Aug 22, 2012 at 8:17

answered Aug 22, 2012 at 8:08

Def_Os

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1 Comment

Roland Smith Over a year ago

You probably want to seed() the random number generator first.

Burhan Khalid · Accepted Answer · 2012-08-22 08:44:06Z

0

A simple approach:

from random import choice
list_of_numbers = range(11)[1:] # the 1: drops the zero
choice(list_of_numbers) # picks a random number from the list

answered Aug 22, 2012 at 8:44

Burhan Khalid

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2 Comments

avasal Over a year ago

just for information ... you can also do list_of_numbers = range(1,11) instead of slicing the list after range

Aesthete Over a year ago

Nice! I've never used choice before. Good addition to the belt.

Aesthete · Accepted Answer · 2012-08-22 11:23:38Z

0

myrands = [rand_int(1,10) for x in range(0,int(raw_input()))]

myrands is a list of random numbers between 1 and 10, the length is determined by user input.

edited Aug 22, 2012 at 11:23

answered Aug 22, 2012 at 8:14

Aesthete

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Comments

avasal · Accepted Answer · 2012-08-22 08:15:29Z

-1

something of this sort could work...

In [84]: user_input = raw_input("Enter a number between 1 to 5 :")
Enter a number between 1 to 5 :3

In [85]: selected_elem = []

In [86]: while len(selected_elem) < int(user_input):
   ....:         random_elem = random.randrange(1, 10, 1)
   ....:         if random_elem not in selected_elem:
   ....:                 selected_elem.append(random_elem)
   ....:

In [87]: print selected_elem
[1, 2, 4]

edited Aug 22, 2012 at 8:15

answered Aug 22, 2012 at 8:09

avasal

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