Catalogue

class Catalogue:
    def __init__(self, name: str):
        self.name = name
        self.products = []

    def add_product(self, product: str):
        self.products.append(product)

    def get_by_letter(self, letter: str):
        stuff = [x for x in self.products if x.startswith(letter)]
        return stuff

    def __repr__(self):
        result = ''
        result += f"Items in the {self.name} catalogue:\n"
        result += '\n'.join(sorted(self.products))
        return result