Collecting traitlets==4.0.0.dev0
Downloading traitlets-4.0.0.dev0-py2.py3-none-any.whl (54kB)
Saved /tmp/tmpkhwe2ryw/traitlets-4.0.0.dev0-py2.py3-none-any.whl
Skipping traitlets, due to already being wheel.