code: def check_password_readable(self, section, fields):
          
          if not fields:
              return
          # The information which of the  configuration files
          # included which option is not available. To avoid false positives,
          # a warning is only printed if exactly one file has been read.
          if len(self.read_ok) != 1:
              return
          fn = self.read_ok[0]
          if fileutil.is_accessable_by_others(fn):
              log.warn(LOG_CHECK, "The configuration file %s contains password information (in section [%s] and options %s) and the file is readable by others. Please make the file only readable by you.", fn, section, fields)
              if os.name == 'posix':
                  log.warn(LOG_CHECK, _("For example execute 'chmod go-rw %s'.") % fn)
              elif os.name == 'nt':
                  log.warn(LOG_CHECK, _("See http://support.microsoft.com/kb/308419 for more info on setting file permissions."))
docs: Check if there is a readable configuration file and print a warning.