python3-sphinx 1.6.6-2 (amd64 binary) in ubuntu bionic

 Sphinx is a tool for producing documentation for Python projects, using
 reStructuredText as markup language.
 .
 Sphinx features:
  * HTML, CHM, LaTeX output,
  * Cross-referencing source code,
  * Automatic indices,
  * Code highlighting, using Pygments,
  * Extensibility. Existing extensions:
    - automatic testing of code snippets,
    - including docstrings from Python modules.
 .
 This package includes Python 3 modules.