code: def print_config_values(self, prefix='- '):
          
          print('Configuration values from ' + self.config_dir)
          self.print_config_value(self.CONFIG_NAME_USER, prefix=prefix)
          self.print_config_value(self.CONFIG_NAME_PATH, prefix=prefix)
          self.print_config_value(self.CONFIG_NAME_PROXY, prefix=prefix)
          self.print_config_value(self.CONFIG_NAME_COMPETITION, prefix=prefix)
docs: a wrapper to print_config_value to print all configuration values
              Parameters
             ==========
             prefix: the character prefix to put before the printed config value
                     defaults to "- "