Collecting ipywidgets==7.0.0a4
Downloading ipywidgets-7.0.0a4-py2.py3-none-any.whl (50kB)
Saved /tmp/tmpa2o1apj3/ipywidgets-7.0.0a4-py2.py3-none-any.whl
Skipping ipywidgets, due to already being wheel.