How to generate random number with the specific length in python

Question

Let say I need a 3 digit number, so it would be something like:

>>> random(3)
563

or

>>> random(5)
26748
>> random(2)
56
         


        

Answer 1

You could write yourself a little function to do what you want:

import random
def randomDigits(digits):
    lower = 10**(digits-1)
    upper = 10**digits - 1
    return random.randint(lower, upper)

Basically, 10**(digits-1) gives you the smallest {digit}-digit number, and 10**digits - 1 gives you the largest {digit}-digit number (which happens to be the smallest {digit+1}-digit number minus 1!). Then we just take a random integer from that range.