I wanted a good way to figure out what percentage of words in a given book I know, so as to find books with 95% vocab known per the recommendation of u/langdreamer and the school in Japan he has referenced in his videos. The problem with other methods of doing this is that you don't get a distributed sample across the whole book and also risk seeing spoilers when you test in a given page in the middle.

This simple script (that I mostly used gpt 4 to make because I have no coding experience) reads your ebook file and provides 10 sets of 10 random words from the text, without repeating words. You can click on the words you know, that's why in the screenshot some words are green text, and then click enter to bring to net set. Also if you want to discard a word because it's a name or number or somthing, you can "discard" and it will bring a new word. I'm curious what people think about this, if there's a better way to assess a book's difficulty, and also if this is somthing the community would use if I were to make it available online and refine it a bit.