code: def append_existing_values(schema, config):
      
  
      for section_name in config:
          for option_name in config[section_name]:
              option_value = config[section_name][option_name]
  
              # Note that we must preserve existing values, wether or not they
              # exist in the schema file!
              schema.setdefault(section_name, {}).setdefault(option_name, {})['value'] = option_value
  
      return schema
docs: Adds the values of the existing config to the config dictionary.