"""
Traceback (most recent call last):
  File "d:\muddev\evennia\evennia\commands\cmdhandler.py", line 644, in _run_command
    ret = cmd.func()
  File ".\commands\command.py", line 942, in func
    if i.tags.has('merchant'):
AttributeError: 'TagHandler' object has no attribute 'has'

An untrapped error occurred.
(Traceback was logged 20-11-30 04:03:59-05).
"""
# https://www.evennia.com/docs/latest/api/evennia.typeclasses.tags.html?highlight=taghandler#evennia.typeclasses.tags.TagHandler.has

class CmdStock(Command):
    key = 'stock'
    def func(self):
        room_contents = self.caller.location.contents
        for i in room_contents:
            if i.tags.has('merchant'):
                self.caller.msg(i.return_stock())