old_contents: extensions = [
      'sphinx.ext.autodoc',
      'sphinx.ext.intersphinx',
      'sphinx.ext.todo',
      'sphinx.ext.coverage',
      'sphinx.ext.viewcode',
      'repoze.sphinx.autointerface',
      'sphinxcontrib.programoutput',
      'sphinxcontrib.images',
  ]
  
new_contents: extensions = [
      'sphinx.ext.autodoc',
      'sphinx.ext.intersphinx',
      'sphinx.ext.todo',
      'sphinx.ext.coverage',
      'sphinx.ext.viewcode',
      'sphinxcontrib.programoutput',
      'sphinxcontrib.images',
  ]
  
subject: Update conf.py