code: def genrows(cursor: Cursor, arraysize: int = 1000) \
          -> Generator[List[Any], None, None]:
      
      # http://code.activestate.com/recipes/137270-use-generators-for-fetching-large-db-record-sets/  # noqa
      while True:
          results = cursor.fetchmany(arraysize)
          if not results:
              break
          for result in results:
              yield result
docs: Generate all rows from a cursor.
  
      Args:
          cursor: the cursor
          arraysize: split fetches into chunks of this many records
  
      Yields:
          each row