def first(word): return word[0] def last(word): return word[-1] def middle(word): return word[1:-1] def is_palindrome(word): print("entering is_palindrome('" + word + "')") if len(word) == 1 or (len(word) == 2 and word[0] == word[1]): print("returning True from is_palindrome('" + word + "')\n") return True elif first(word) == last(word): word=word[1:-1] childresult = is_palindrome(word) print("is_palindrome('" + word + "') returned " + str(childresult) + "\n") # Now try commenting out the following line by prefixing it with a pound/hash symbol # Run again and see what happens. return childresult else: print("returning False from is_palindrome('" + word + "')\n") return False w = raw_input() print("outermost call returns " + str(is_palindrome(w)))
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