ImportError: No module named sanitizer

[govindsmenokee]

html5lib dependency should be html5lib>=0.999,<0.99999999 because bleach is dependent on the sanitizer module which was removed in the latest html5lib release.
A temporary fix would be -

pip uninstall html5lib
pip uninstall bleach
pip install bleach

[ryneeverett]

The dependency is correctly pinned in bleach so we shouldn't have to do this. An easier temporary fix is pip install -U bleach. I think there must be a bug in pip's dependency resolution because this has been a pain for me as well.