How to Create a Random String in Python [Step-by-Step] — CODEFATHER

Claudio Sabato
3 min readNov 27, 2023

Are you trying to create a random string in your Python program? This tutorial will show you how to do it step-by-step.

Let’s get started!

Generate Random Strings in Python Using a List Comprehension

Random string generation involves selecting characters (like letters, digits, and symbols) in a random order to form a string. The randomness in Python can be implemented using the random module, which provides functions to execute random operations.

Let’s understand the logic to generate a random string step-by-step.

We will start by using the random.choice() function that randomly selects an element from the list of characters we pass to it:

>>> import random
>>> random.choice(['h', 'e', 'l', 'l', 'o'])
'h'
>>> random.choice(['h', 'e', 'l', 'l', 'o'])
'l'
>>> random.choice(['h', 'e', 'l', 'l', 'o'])
'e'

If you apply a list comprehension to the expression above you can create a list of random characters:

>>> [random.choice(['h', 'e', 'l', 'l', 'o']) for i in range(5)]
['l', 'o', 'h', 'o', 'l']

Now if you apply the string join() method to the list generated before, you obtain a string that…

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Claudio Sabato

Claudio Sabato is an IT expert with over 15 years of professional experience in Python/Bash programming, Linux Systems Administration and IT Systems Design.