code: def close(self):
          
  
          if self.__delayed_connection_path and self.__connection is None:
              self.__initialize_connection()
              return
  
          try:
              self.check_connection()
          except (SystemError, NullDatabaseConnectionError):
              return
  
          logger.debug("close connection to a SQLite database: path='{}'".format(self.database_path))
  
          self.commit()
          self.connection.close()
          self.__initialize_connection()
docs: Commit and close the connection.
  
          .. seealso:: :py:meth:`sqlite3.Connection.close`