That was the most horrible quizz I've ever taken in my life. I recently tried to make a simple flask app to sort pictures on my computer. I used file:/// since

That was the most horrible quizz I've ever taken in my life. I recently tried to make a simple flask app to sort pictures on my computer. I used file:/// since there were a lot of them. I was quite unhappy to discover that CORS is quite restrictive...