code: def _UserUpdateSupportedFormats(self, origFormatList = []):
      
      formatList = list(origFormatList)
  
      inputDone = None
      while inputDone is None:
        prompt = "Enter new format (e.g. .mp4, .avi), " \
                               "'r' to reset format list, " \
                               "'f' to finish or " \
                               "'x' to exit: "
        response = goodlogging.Log.Input("CLEAR", prompt)
  
        if response.lower() == 'x':
          sys.exit(0)
        elif response.lower() == 'f':
          inputDone = 1
        elif response.lower() == 'r':
          formatList = []
        else:
          if response is not None:
            if(response[0] != '.'):
              response = '.' + response
            formatList.append(response)
  
      formatList = set(formatList)
      origFormatList = set(origFormatList)
  
      if formatList != origFormatList:
        self._db.PurgeSupportedFormats()
        for fileFormat in formatList:
          self._db.AddSupportedFormat(fileFormat)
  
      return formatList
docs: Add supported formats to database table. Always called if the
      database table is empty.
  
      User can build a list of entries to add to the database table
      (one entry at a time). Once finished they select the finish option
      and all entries will be added to the table. They can reset the
      list at any time before finishing.
  
      Parameters
      ----------
        origFormatList : list [optional : default = []]
          List of original formats from database table.
  
      Returns
      ----------
        string
          List of updated formats from database table.