Tweeted By @ogrisel
joblib 1.0.0 is out on PyPI and conda-forge: https://t.co/24jkFl6Pha
— Olivier Grisel (@ogrisel) December 14, 2020
This release changes how joblib.hash handles numpy.dtype which is necessary to support the upcoming numpy 1.20.
This changes the hash values and therefore invalidates any existing joblib.Memory cache.