I should have studied Python at the beginning, because it didn't feel so good. Now the tuition fee has risen to 16800. The teacher who taught me has a bad temper and a particularly tough tone, but he is really responsible but impatient. I've seen him scold a boy in his twenties and cry. It's no use complaining. The teacher is one of them. They all wear one. In short, don't come unless necessary. Don't be depressed when you haven't learned anything.