code: def parse_skip_comment(self):
          
          skipped_error_codes = ''
          if self.current.kind == tk.COMMENT:
              if 'noqa: ' in self.current.value:
                  skipped_error_codes = ''.join(
                       self.current.value.split('noqa: ')[1:])
              elif self.current.value.startswith('# noqa'):
                  skipped_error_codes = 'all'
          return skipped_error_codes
docs: Parse a definition comment for noqa skips.