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Every website has some form of security interface requiring user authentication. These forms often use your email and password to access the website. Using a secure password when logging in is essential to prevent the bad guys (hackers) from gaining access to your account.

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This article will teach you how to create a random password generator using Python by generating a combination of letters, numbers, and symbols as characters scrambled together, making it difficult to crack or guess the password.

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Let’s build a random password generator together.

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## Getting Started

To build a random password generator, we’ll use this approach:

* Write out all acceptable passwords character types, such as the letters, numbers, and symbols
* Give users the ability to enter the number of letters, symbols, and numbers for the generated password
* Randomize the order of characters to make it hard to guess

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## **Creating the Random Password Generator**

As you know, some applications on the internet suggest randomized passwords when you create a new account. The randomized characters are for you to decide and can be as long as eight characters.

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Create a new file, `main.py`, to write the scripts for the app.

 \n 

```python
# main.py


letters = [
    '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'
]
numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
symbols = ['!', '#', '$', '%', '&', '(', ')', '*', '+']

print("Welcome to the PyPassword Generator!")

nr_letters = int(input("How many letters would you like in your password?\n"))

nr_symbols = int(input(f"How many symbols would you like?\n"))

nr_numbers = int(input(f"How many numbers would you like?\n"))
```

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The characters from the code block above make up the combination of the password generator presented in a list.

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Next is making sure that users can enter a figure, an integer representing the number of times a character will appear when the final output is displayed and declared with a variable.

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`\n`: represent that the input value will go to the following line

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Now, let’s update the rest of the code. Copy and paste the following:

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```python
# main.py
# Password Generator Project

import random # add this

# letters, numbers, and symbols lists

# users' input for the amount of characters

# add these below
password_list = []

for char in range(1, nr_letters + 1):
    password_list.append(random.choice(letters))

for char in range(1, nr_symbols + 1):
    password_list.append(random.choice(numbers))

for char in range(1, nr_numbers + 1):
    password_list.append(random.choice(symbols))

random.shuffle(password_list)
```

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The code block does the following:

* Import the in-built `random` the module used to generate random numbers
* Create an empty list **\[\]** with the variable, `password_list`
* Iterate through the number in the range function to create a sequence of numbers from the start index and end with the last index plus 1
* Next, append the empty list to get a randomly selected element using the `random.choice()` method for each of the character’s declared variables
* Shuffle the newly created `password_list` changing the position of the elements every time a new password using the `.shuffle()` method

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## **Convert the Password List to a String**

Copy and update the following code:

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```python
# main.py

# import

# letters, numbers, and symbols lists

# users' input for the amount of characters

# randomize characters

# add this
password = ""
for char in password_list:
    password += char

# convert list to string
pwd = ''.join(password_list)
print(f"Your random password to use is: {pwd}")
```

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The process of converting a list to a string is as follows:

* Create an empty string variable, `password`
* Iterate through the password list using the `for` keyword
* Concatenate the password strings with the looped `char` variable
* Use the `.join()` method to change the list iterate from the password list into a string
* Finally, display the result of the password using the `f-strings`

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**The final result of the code:**

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```python
# main.py

import random

letters = [
    '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'
]
numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
symbols = ['!', '#', '$', '%', '&', '(', ')', '*', '+']

print("Welcome to the PyPassword Generator!")
nr_letters = int(input("How many letters would you like in your password?\n"))
nr_symbols = int(input(f"How many symbols would you like?\n"))
nr_numbers = int(input(f"How many numbers would you like?\n"))

password_list = []

for char in range(1, nr_letters + 1):
    password_list.append(random.choice(letters))

for char in range(1, nr_symbols + 1):
    password_list.append(random.choice(numbers))

for char in range(1, nr_numbers + 1):
    password_list.append(random.choice(symbols))

random.shuffle(password_list)

password = ""
for char in password_list:
    password += char
print("char", char)

# convert list to string
pwd = ''.join(password_list)
print(f"Your random password to use is: {pwd}")
```

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## **Conclusion**

In this article, you developed an application that generates random passwords that are not the same on each try, making it use case dynamic for generating as many passwords as possible.

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Though this may not be the best approach to generating random passwords, the article's essence is to show the possibility of using the Python program to create a password. Still, the output is unexpected and different with every new input, no matter the length of the password. 

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 ![](https://cdn.hackernoon.com/images/7FHeR383huUAovH1GLgM3KFQYh12-umd301a.gif.webp)

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## **Learn More**

* __[Generate pseudo-random numbers](https://docs.python.org/3/library/random.html)__
* __[Append: add items to a list](https://realpython.com/python-append/)__

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