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Vamsi Krishna
Vamsi Krishna

Posted on

Random Password generator - Easiest way { Python }

In this post I will help you build a random password generator in the most easiest and efficient way.

How can we build this πŸ€”?

  1. First thing we will do is to ask the user what is the length of the string
  2. We will get random values from a list containing all the alphabets(both uppercase and lowercase), numbers and special characters like #,@,#...

⚠️⚠️⚠️ Mistake we need to avoid ⚠️⚠️⚠️

Most of the people generally makes this mistake while doing this project. they will create a list and they will start writing all the characters, numbers manually... like below code πŸ‘‡πŸ‘‡

characters = ['a','b','c','d',......,'A','B','C'....]
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This will definitely not make you a good programmer.

Instead do this βœ…βœ…

There is a module named string in python which will give you all the alphabets and special characters.

Create a list which contain all the alphabets, numbers and special characters as shown below.

import string

# getting all the alphabets
characters = list(string.ascii_letters)

# adding numbers from 0 to 9
characters.extend(list(x for x in range(0,10)))

# adding all the special characters
characters.extend(list(string.punctuation))
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characters list will look as shown below.

['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, '!', '"', '#', '$', '%', '&', "'", '(', ')', '*', '+', ',', '-', '.', '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_', '`', '{', '|', '}', '~']
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πŸš€ Complete Code for creating random password generator using Python.

import string
import random

num = int(input('Enter the length of password : '))

# getting all the alphabets
characters = list(string.ascii_letters)

# adding numbers from 0 to 9
characters.extend(list(x for x in range(0,10)))

# adding all the special characters
characters.extend(list(string.punctuation))

password = ''

for i in range(num):
    password = password + str(random.choice(characters));

print(password)
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Thanks for Reading πŸ’–πŸ’–
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Top comments (6)

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krishnaagarwal profile image
Krishna Agarwal

Thanks a lot.

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vamsitupakula_ profile image
Vamsi Krishna Author

Welcome πŸ™Œ

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vamsitupakula_ profile image
Vamsi Krishna Author

Hey, Lukasz,
This is just a beginner project which help someone to understand string module and random module. it's not like a real password generating project.

Thank You. :-)

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lksmrqrdt profile image
Lukas Marquardt • Edited on

Please do not use random.choice() for this kind of task.
This function doesn't generate cryptographically secure randomness and is not suited for this task.

The documentation mentions this:

Warning: The pseudo-random generators of this module should not be used for security purposes. For security or cryptographic uses, see the secrets module.

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lukeshiru profile image
Luke Shiru

I find this kinda funny because every time I see a "create a random password generator" post in JavaScript, they have the same issue in which they use Math.random() which isn't meant to be used for cryptographic security.

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