The PyHEP talk is about zfit with some examples on hepstats.
zfit is a general purpose fitting package for Python and focused mostly on unbinned fits. With version 0.10, binned fits have been introduced and allow for
To run the notebooks, either download them and install (with conda or mamba, a faster conda drop-in replacement) with
conda env create --file=environment.yml
or they can be run in a binder instance (in browser, no installation needed)
(or, if that fails or doesn't yet has the newest updates)