How to print a random string in separate lines

I need help on how to display the result of the following code in separate lines:

import random

import string

random.choice(string.ascii_letters)

random = ''.join([random.choice(string.ascii_letters) for n in range(3)])

print (random.lower())

I've made several searches to find help, like this: Printing out a random string (Python)

But it only tells me how to create and print a random string (like this: a, b, c) but not like this (which is what I need):

a
b    
c

I use python 3.6.0 by the way.