Python – How to Generate Random Integers Between 0 and 9

#!/usr/bin/env python
from scipy.stats import bernoulli,poisson,norm,expon

bernoulli, poisson, norm, expon and many others are documented here

print(norm.rvs(size=30))
print(bernoulli.rvs(.3,size=30))
print(poisson.rvs(1,2,size=30))
print(expon.rvs(5,size=30))

All the distributions defined in scipy.stats have a common interface to the pdf, cdf, rvs (random variates). More info here.

You can use either of random.randint or random.randrange. So to get a random 3-digit number:

from random import randint, randrange

randint(100, 999)     # randint is inclusive at both ends
randrange(100, 1000)  # randrange is exclusive at the stop

^{* Assuming you really meant three digits, rather than "up to three digits".}

To use an arbitrary number of digits:

from random import randint

def random_with_N_digits(n):
    range_start = 10**(n-1)
    range_end = (10**n)-1
    return randint(range_start, range_end)
    
print random_with_N_digits(2)
print random_with_N_digits(3)
print random_with_N_digits(4)

Output:

33
124
5127