Method get_cache

lantz/feat.py:296–300

(self, instance, key=MISSING)

        raise AttributeError('{} is a permanent feat of {}'.format(self.name, instance.__class__.__name__))

    def get_cache(self, instance, key=MISSING):
        try:
            return self.value[instance]
        except KeyError:
            return MISSING

    def set_cache(self, instance, value, key=MISSING):
        old_value = self.get_cache(instance, key)