A miniature Python package to truly make your strings something special.

beautify_str.py

import string

def flip_char(char):
    if char in string.ascii_lowercase:
        return string.ascii_uppercase[string.lowercase.find(char)]
    else:
        return string.ascii_lowercase[string.uppercase.find(char)]

def beautify_string(old_string):
    new_beautiful_string = []

    for num, letter in enumerate(old_string):
        if letter in string.ascii_letters:
            if num % 2:
                new_beautiful_string.append(flip_char(letter))
                continue
        new_beautiful_string.append(letter)

    return "".join(new_beautiful_string)

if __name__ == '__main__':
    demo = "This is the function that everyone wants and nobody needs"
    result = beautify_string(demo)
    print(result)