class Categories:
    """Category mappings"""
    def __init__(self):

        self.categories = {
            15: "Politics OK",
            16: "No Politics",
            23: "Forum Stuff"
        }

    def get_category_name(self, category_id):
        return self.categories.get(category_id, "Unknown")

    def get_category_id(self, category_name):
        for category_id, category_name in self.categories.items():
            if category_name == category_name:
                return category_id

    def get_all(self):
        return self.categories