code: def get_changelog_date_packager(self):
          
          try:
              packager = subprocess.Popen(
                  'rpmdev-packager', stdout=subprocess.PIPE).communicate(
                  )[0].strip()
          except OSError:
              # Hi John Doe, you should install rpmdevtools
              packager = "John Doe <john@doe.com>"
              logger.warn("Package rpmdevtools is missing, using default "
                          "name: {0}.".format(packager))
          with utils.c_time_locale():
              date_str = time.strftime('%a %b %d %Y', time.gmtime())
          encoding = locale.getpreferredencoding()
          return u'{0} {1}'.format(date_str, packager.decode(encoding))
docs: Returns part of the changelog entry, containing date and packager.