TypeError: 'int' object is unsubscriptable You have to use str(pal) first, I guess. Your core point is right, though; his clojure uses number->string + revers

TypeError: 'int' object is unsubscriptable You have to use str(pal) first, I guess. Your core point is right, though; his clojure uses number->string + reverse, and the Python can too.