code: def parse(self):
          
          for section_name, section_options in self.sections.items():
  
              method_postfix = ''
              if section_name:  # [section.option] variant
                  method_postfix = '_%s' % section_name
  
              section_parser_method = getattr(
                  self,
                  # Dots in section names are tranlsated into dunderscores.
                  ('parse_section%s' % method_postfix).replace('.', '__'),
                  None)
  
              if section_parser_method is None:
                  raise DistutilsOptionError(
                      'Unsupported distribution option section: [%s.%s]' % (
                          self.section_prefix, section_name))
  
              section_parser_method(section_options)
docs: Parses configuration file items from one
          or more related sections.