Exercise from CodeWars

Kebabize

def kebabize(string):
    """Modify the kebabize function so that it converts a camel case string into a kebab case."""
    for letter in string:
        if letter.isupper():
            string = string.replace(letter, "-" + letter.lower())
        elif letter.isdigit():
            string = string.replace(letter, "")
    return string.lstrip("-")


kebabize('myCamelCasedString')  # my-camel-cased-string
kebabize('myCamelHas3Humps')  # my-camel-has-humps
kebabize('SOS')  # s-o-s
kebabize('42')  # ''
kebabize('CodeWars')  # code-wars