I imagine that you completed your work in a Jupyter Notebook, so your file should have been saved with an .ipynb extension. You saved your file with a .py.html extension. It's no big deal, but definitely be sure to check the file extension when saving your files the next time around not only for us project reviewers, but also so that you can easily go back to your work and make any changes necessary.
I imagine that you completed your work in a Jupyter Notebook, so your file should have been saved with an .ipynb extension. You saved your file with a .py.html extension. It's no big deal, but definitely be sure to check the file extension when saving your files the next time around not only for us project reviewers, but also so that you can easily go back to your work and make any changes necessary.