Nato_conversion

nato_words = ['Alfa', 'Bravo', 'Charlie', 'Delta', 'Echo', 'Foxtrot', 'Golf', 'Hotel', 'India', 'Juliet', 'Kilo',
              'Lima', 'Mike', 'November', 'Oscar', 'Papa', 'Quebec', 'Romeo', 'Sierra', 'Tango', 'Uniform', 'Victor',
              'Whiskey', 'X-ray', 'Yankee', 'Zulu']


def nato_convert(word):
    letter_index = [ord(i.lower()) - 96 for i in word if i.isalpha()]
    conversion = [nato_words[i - 1] for i in letter_index]
    print(*conversion, sep=', ')

nato_convert('Hello Friend')