This python script reads user input and piggifies it after validation. Created for a Python assignment on Codecademy.

piggify.py

def read():
    word = raw_input("Gimme your word:")
    if len(word) == 0:
        print "You must say something"
        return read()
    elif not word.isalpha():
        print "It's not a word, honey! (No spaces, numbers allowed...)"
        return read()
    else:
        return word

def piggify(s):
    if len(s) == 1:
        return s + "ay"
    else:
        return s[1:] + s[0] + "ay"

print piggify(read().lower())

This is what they suggest as a solution...

pyg = 'ay'

original = raw_input('Enter a word:')

if len(original) > 0 and original.isalpha():
    print "I'll use '%s' to translate" % (original)
    word = original.lower()
    first = word[0]
    new_word = word[1:] + first + pyg
    print "Translation: " + new_word
else:
    print "You've not entered a thing... " + pyg