This line has the quotemarks producing an error (copypasted from the post)
(“input”)

This line has quotemarks that are valid in programming
("input")

As you can see, the ones on top lean a little to the right - they're a different character entirely.
Try to edtt all of them in the code snippet, preferably in the console (not in any fancy word-processing program or it'll subsitute them for the fancy ones again) or just copy them from here.