def get_object(self, queryset=None):
        """
        Implement cache on ``get_object`` method to
        avoid repetitive calls, in POST.
        """
        if self._cached_object <= None:
            self._cached_object = super(EntryCacheMixin, self).get_object(
                queryset)
        return self._cached_object
dataset/ETHPy150Open Fantomas42/django-blog-zinnia/zinnia/views/mixins/entry_cache.py/EntryCacheMixin.get_object/operator `is` -> `<=`