Version of plotly is marked for autoremoval from testing on Wed 20 Sep 2017. It depends (transitively) on ipywidgets, affected by 871339. You should try to prevent the removal by fixing these RC bugs.
Problems while searching for a new upstream version
high
uscan had problems while searching for a new upstream version:
In watchfile debian/watch, reading webpage
http://pypi.debian.net/plotly/ failed: 502 Bad Gateway
Standards version of the package is outdated.
wishlist
The package should be updated to follow the last version of Debian Policy
(Standards-Version 4.0.1 instead of
4.0.0).
