BeautifulSoup4 is Python3 compatible. It was released under a new name. uWSGI has Python3 support as a module. I have been using both on Python3 for many year

BeautifulSoup4 is Python3 compatible. It was released under a new name. uWSGI has Python3 support as a module. I have been using both on Python3 for many years. I don't think there is any python module left which does not have Python3 support or a more modern, better alternative.