I did try the sample code posted above when I was trying to get this to work. Do to the low views of this post and lack of other post around the web, I assumed it was a problem isolated to python and a specific version of the package. I started on plotly==5.5.0 I tried down grading to when px.timeline() was introduced in plotly=4.9.0 with pip install plotly==4.9.0 --force-reinstall. I restarted the kernel and still got the same error. So I updated to the latest plotly==5.18.0 restarted my kernel and it worked.
1 Like