class Calculator:
    def __init__(self, limit):
        self.limit = limit
        self.count = 0
        self.records = []

    def add_record(self, record):
        self.records.append(record)

    def print_comments(self):
        for record in self.records:
            print(record.comment)

    def get_balance(self):
        return self.limit - sum([record.amount for record in self.records])

class Record:
    def __init__(self, amount, comment, date = ' '):
        self.amount = amount
        self.comment = comment

    def show(self):
        print(f'Создана запись! Затраты: {self.amount}, комментарий: "{self.comment}"')

calc = Calculator(1000)
calc.add_record(Record(300, 'Starbucks'))
calc.add_record(Record(200, 'MTC mobile'))
calc.print_comments()
calc.get_balance()