code: def set_config_value(self, name, value, quiet=False):
          
  
          config_data = self._read_config_file()
  
          if value is not None:
  
              # Update the config file with the value
              config_data[name] = value
  
              # Update the instance with the value
              self.config_values[name] = value
  
              # If defined by client, set and save!
              self._write_config_file(config_data)
  
              if not quiet:
                  self.print_config_value(name, separator=' is now set to: ')
docs: a client helper function to set a configuration value, meaning
             reading in the configuration file (if it exists), saving a new
             config value, and then writing back
  
             Parameters
             ==========
             name: the name of the value to set (key in dictionary)
             value: the value to set at the key
             quiet: disable verbose output if True (default is False)