num_key_alpha_freq_cipher

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Filename: num_key_alpha_freq_cipher.py

"""
This script takes user input, counts the occurrences of each letter in the alphabet, and generates a numerical key representing the frequency of each letter.
The script then displays the user input, the alphabet, and the corresponding numerical key that can be used in other scripting easily.

Example Output:
    Enter your string: hello world!

    User Input:  hello world!
                    abcdefghijklmnopqrstuvwxyz
    Numerical Key:  00011001000300200100001000
"""

# Global Variable Alphabet
alphabet = 'abcdefghijklmnopqrstuvwxyz'

def count_letters(input_string):
    letter_count = {char: 0 for char in alphabet}

    for char in input_string:
        if char.isalpha():
            letter_count[char.lower()] += 1

    count_string = ''.join(str(letter_count[char]) for char in alphabet)
    return count_string

# Get User Input
user_input = input("Enter your string: ")
num_key = count_letters(user_input)

print('\nUser Input: ', user_input, '\n')
print('\t\t' + alphabet)
print('Numerical Key: ', num_key)