Fix flake8 issues since release 3.6.0 Flake8 had a new release which raise new issues, namely: W504: line break after binary operator F841: local variable 'ex' is assigned to but never used W605: invalid escape sequence F821: undefined name 'buffer' (noqa seems the only way to avoid this false positive) Also pin flake8>=3.6 in our tests and make explicit that we use python3 to run flake8 tests.

Web side development
====================

In this chapter, we will describe the core APIs for web development in
the *CubicWeb* framework.

.. toctree::
   :maxdepth: 2

   publisher
   controllers
   request
   searchbar
   views/index
   rtags
   ajax
   js
   css
   edition/index
   facets
   internationalization
   property
   httpcaching
   resource