This video can help you to setup OpenSlide version 1.1.1 for python in Window 10. Furthermore, this video can also help you to solve error 126 while importing.
OpenSlide Python Web: https://pypi.org/project/openslide-py...
OpenSlide Window Binaries: https://openslide.org/download/
OpenSlide Documentation: https://openslide.org/api/python/#
OpenSlide HomePage: https://openslide.org/