The documentation link for 3.5+ is having an issue with the left sidebar where the index is present. In 2.7 if I scroll the main doc below to mid of the document the sidebar still shows me the index. The same is not present in the 3.5+. 

I know this is a very minor thing but for a new learner like me who is constantly reading these docs, this very small thing irritates a lot. 

Thanks

Sorry you're having trouble with this.
There is similar issue as https://bugs.python.org/issue28044.

The Python documentation Sphinx theme is now being maintained over at https://github.com/python/python-docs-theme/

Please file the issue there. Thanks.

superseder: Make the sidebar in the documentation follow the section automatically

nosy: + Mariatta
messages: + msg323395
resolution: duplicate
stage: resolved