class Item():
    def __init__(self, name, category):
        self.name = name
        self.category = category

    def set_name(self, name):
        self.name = name

    def set_category(self, category):
        self.category = category

    def __str__(self):
        return 'Name: {0}, Category: {1}'.format(self.name, self.category)

class Catalog():
    def __init__(self, name):
        self.name = name
        self.collection = []

    def set_name(self, name):
        self.name = name

    def add(self, item):
        self.collection.append(item)

    def remove(self, item):
        self.collection.remove(item)

    def find_item_by_name(self, name):
        for item in self.collection:
            if str(item.name) == name:
                return item

    def clear(self):
        self.collection = []

    def __str__(self):
        split = '\n'
        tab = '\t'
        output =' '
        for val in range(0, len(self.collection)):
            output  = output + split + tab + str(self.collection[val])
        return 'catalog {}:'.format(self.name) + output