Please keep us posted if it works. The website looks a little chaotic under the hood, but there are some clear API calls. It seems not to be too difficult to pull out some data programmatically.
Unfortunately there's no documentation, tried looking in the source code of tiktok.py but honestly I don't have the skills to call the objects/functions just looking at it. What I need is: given a tiktok music id, how to scrap metadata of all posts using that music.
I don't do mass-scraping with some automated tool. TikTok allows you to save videos, so people do that and re-post on other channels. There is enough of that happening that scraping is redundant. Just the way Vine[0] lives on forever on YouTube.