code: def _get_with_fallback(config, section, option, fallback):
      
      exists = (config.has_section(section)
                and config.has_option(section, option))
  
      if not exists:
          return fallback
      else:
          return config.get(section, option)
docs: Get a configuration value, using fallback for missing values.
  
      Parameters:
      config   -- the configparser to try to extract the option value from.
      section  -- the section to extract value from.
      option   -- the name of the option to extract value from.
      fallback -- fallback value to return if no value was set in `config`.
  
      returns  -- the config option value if it was set, else fallback.