# ordersreport.py from collections import namedtuple Order = namedtuple("Order", "amount placed_at") class OrdersReport: def __init__(self, orders, start_date, end_date): self.orders = orders self.start_date = start_date self.end_date = end_date def total_sales_within_date_range(self): orders_within_range = [] for order in self.orders: if self.start_date <= order.placed_at <= self.end_date: orders

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