code: def release_data(request, package_name, version):
      
      session = DBSession()
      release = Release.by_version(session, package_name, version)
  
      if release:
          result = {'name': release.package.name,
                      'version': release.version,
                      'stable_version': '',
                      'author': release.author.name,
                      'author_email': release.author.email,
                      'home_page': release.home_page,
                      'license': release.license,
                      'summary': release.summary,
                      'description': release.description,
                      'keywords': release.keywords,
                      'platform': release.platform,
                      'download_url': release.download_url,
                      'classifiers': [c.name for c in release.classifiers],
                      #'requires': '',
                      #'requires_dist': '',
                      #'provides': '',
                      #'provides_dist': '',
                      #'requires_external': '',
                      #'requires_python': '',
                      #'obsoletes': '',
                      #'obsoletes_dist': '',
                      'bugtrack_url': release.bugtrack_url,
                      'docs_url': release.docs_url,
                      }
  
      if release.maintainer:
          result.update({'maintainer': release.maintainer.name,
                          'maintainer_email': release.maintainer.email,
                          })
  
      return dict([(key, val or '') for key, val in result.items()])
docs: Retrieve metadata describing a specific package release.
      Returns a dict with keys for:
          name
          version
          stable_version
          author
          author_email
          maintainer
          maintainer_email
          home_page
          license
          summary
          description
          keywords
          platform
          download_url
          classifiers (list of classifier strings)
          requires
          requires_dist
          provides
          provides_dist
          requires_external
          requires_python
          obsoletes
          obsoletes_dist
          project_url
          docs_url (URL of the packages.python.org docs
                      if they've been supplied)
      If the release does not exist, an empty dictionary is returned.