[Python] how to update django cached_property

I would like to use @cached_property on model property to avoid too much db access.

class AttrGroup(models.Model):
...

@cached_property
def options(self):
options = AttributeOption.objects.filter(group_id=self.id)
return options
...


This works fine.

i want to use the following function to update the value of options.But how should i do it? for property decorator, there is setter for it.

def _set_options(self, value):
for option in value:
AttributeOption.objects.create(group_id=self.id, option=option.get('option'))

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