Wikimedia Bugzilla is closed!

In page.py the class Category has the following function:

def isHiddenCategory(self):
        """Return True if the category is hidden."""
        # FIXME
        # This should use action=query&list=allcategories
        # setting acfrom and acto to the category title and adding
        # acprop=hidden but currently fails  in some cases
        # (see bug 48824)
        return '__HIDDENCAT__' in self.expand_text()


It should probably just get the page property from properties()