          else:
              cfgfile = FileHandler("open", "config").retfile
              if not cfgfile:
                  return
              cfg = self.serializer.unmarshal(cfgfile.read())
  
          if not command and len(cfg.keys()) == 1:
              command = list(cfg.keys())[0]
  
          opts = self.get_command_options(cfg, command) if command else cfg
 
</s> remove             with open(filename, "r") as cfgfile:
                cfg = self.serializer.unmarshal(cfgfile.read())
 </s> add             cfg = self.serializer.load(filename) </s> remove         with open(menu_file, "rb") as inp:
            recent_files = serializer.unmarshal(inp.read().decode("utf-8"))
            logger.debug("Loaded recent files: %s", recent_files)
 </s> add         recent_files = serializer.load(menu_file)
        logger.debug("Loaded recent files: %s", recent_files) </s> remove         cfg = self.cli_opts.get_option_values(command)
        cfgfile.write(self.serializer.marshal(cfg))
 </s> add         filename = cfgfile.name </s> remove         self.add_to_recent(cfgfile.name, command)
        logger.debug("Saved config: (command: '%s', cfgfile: '%s')", command, cfgfile)
 </s> add         cfg = self.cli_opts.get_option_values(command)
        self.serializer.save(filename, cfg)
        self.add_to_recent(filename, command)
        logger.debug("Saved config: (command: '%s', filename: '%s')", command, filename) </s> remove         self.add_to_recent(cfgfile.name, command)
        logger.debug("Loaded config: (command: '%s', cfgfile: '%s')", command, cfgfile)
 </s> add         self.add_to_recent(filename, command)
        logger.debug("Loaded config: (command: '%s', filename: '%s')", command, filename)
            filename = cfgfile.name
            cfgfile.close()
            cfg = self.serializer.load(filename)
          else:
              cfgfile = FileHandler("open", "config").retfile
              if not cfgfile:
                  return
            filename = cfgfile.name
            cfgfile.close()
            cfg = self.serializer.load(filename)
  
          if not command and len(cfg.keys()) == 1:
              command = list(cfg.keys())[0]
  
          opts = self.get_command_options(cfg, command) if command else cfg
keep keep keep keep replace keep keep keep keep keep
 Standardize serialization (#903)

* Standardize serialization

- Linting
- Standardize serializer use throughout code
- Extend serializer to load and save files
- Always load and save in utf-8
- Create documentation 
lib/gui/utils.py