docs: def install_from_rpm_py_package(self):
          """Run install from RPM Python binding RPM package."""
          self._download_and_extract_rpm_py_package()
  
          # Find ./usr/lib64/pythonN.N/site-packages/rpm directory.
          # A binary built by same version Python with used Python is target
          # for the safe installation.
  
          if self.rpm.has_set_up_py_in():
              # If RPM has setup.py.in, this strict check is okay.
              # Because we can still install from the source.
              py_dir_name = 'python{0}.{1}'.format(
                            sys.version_info[0], sys.version_info[1])
          else:
              # If RPM does not have setup.py.in such as CentOS6,
              # Only way to install is by different Python's RPM package.
              py_dir_name = '*'
  
          python_lib_dir_pattern = os.path.join(
                                  'usr', '*', py_dir_name, 'site-packages')
          rpm_dir_pattern = os.path.join(python_lib_dir_pattern, 'rpm')
          downloaded_rpm_dirs = glob.glob(rpm_dir_pattern)
          if not downloaded_rpm_dirs:
              message = 'Directory with a pattern: {0} not found.'.format(
                      rpm_dir_pattern)
              raise RpmPyPackageNotFoundError(message)
          src_rpm_dir = downloaded_rpm_dirs[0]
  
          # Remove rpm directory for the possible installed directories.
          for rpm_dir in self.python.python_lib_rpm_dirs:
              if os.path.isdir(rpm_dir):
                  Log.debug("Remove existing rpm directory {0}".format(rpm_dir))
                  shutil.rmtree(rpm_dir)
  
          dst_rpm_dir = self.python.python_lib_rpm_dir
          Log.debug("Copy directory from '{0}' to '{1}'".format(
                    src_rpm_dir, dst_rpm_dir))
          shutil.copytree(src_rpm_dir, dst_rpm_dir)
  
          file_name_pattern = 'rpm-*.egg-info'
          rpm_egg_info_pattern = os.path.join(
                                 python_lib_dir_pattern, file_name_pattern)
          downloaded_rpm_egg_infos = glob.glob(rpm_egg_info_pattern)
          if downloaded_rpm_egg_infos:
              existing_rpm_egg_info_pattern = os.path.join(
                  self.python.python_lib_dir, file_name_pattern)
              existing_rpm_egg_infos = glob.glob(existing_rpm_egg_info_pattern)
              for existing_rpm_egg_info in existing_rpm_egg_infos:
                  Log.debug("Remove existing rpm egg info file '{0}'".format(
                            existing_rpm_egg_info))
                  os.remove(existing_rpm_egg_info)
  
              Log.debug("Copy file from '{0}' to '{1}'".format(
                        downloaded_rpm_egg_infos[0], self.python.python_lib_dir))
              shutil.copy2(downloaded_rpm_egg_infos[0],
                           self.python.python_lib_dir)