Try this out

from evennia import utils
from evennia.utils.utils import inherits_from
from evennia import DefaultRoom
from typeclasses.characters import Character
from typeclasses.npcs import Npc, Mob
from evennia import DefaultObject, CmdSet, default_cmds
from evennia.utils.evmenu import EvMenu
from commands.default_cmdsets import ChargenCmdset
from evennia import TICKER_HANDLER
import random
from evennia import logger

class Room(DefaultRoom):
    """
    Default room
    """



class PveRoom(Room):
    """
    PVE rooms
    """

    def at_object_creation(self):

        self.tags.add("anubian_farm", category="pverooms")

    def at_object_receive(self, obj, source_location):
        logger.log_msg(f"Object has entered pve test room")
        if utils.inherits_from(obj, 'Mob'):
            logger.log_msg(f"Pveroom object is a Mob - ignoring.")
            return
        elif utils.inherits_from(obj, 'Character'):
            logger.log_msg(f"Pveroom object is character, do look command.")
            obj.execute_cmd('look')
            for item in self.contents:
                if utils.inherits_from(item, 'Mob'):
                    logger.log_msg(f"A Mob is in the room, run at_char_entered in npcs.Mob")
                    item.at_char_entered(obj)