def get_category_url(self, category):
        if self._url_resolver is not None:
            return self._url_resolver(category)
        if self.obj and hasattr(self.obj, 'get_category_absolute_url'):
            return self.obj.get_category_absolute_url(category)
        return UNRESOLVED_URL_MARKER
:param factor_range: an interval to random sample the `contrast_factor`.
dataset/ETHPy150Open idlesign/django-sitecats/sitecats/toolbox.py/CategoryList.get_category_url--crossover with--dataset/ETHPy150Open ppwwyyxx/tensorpack/tensorpack/dataflow/imgaug/imgproc.py/Contrast.__init__