<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def list_blocks(self):
 """Returns the AG blocks amount divided by type. :returns: a snap7.types.BlocksList object. """

        logger.debug("listing blocks")
        blocksList = BlocksList()
        result = self.library.Cli_ListBlocks(self.pointer, byref(blocksList))
        check_error(result, context="client")
        logger.debug("blocks: %s" % blocksList)
        return blocksList