""" 数据定义的类 """ class Record: def __init__(self, date, order_id, money, province): self.date = date # 订单日期 self.order_id = order_id # 订单ID self.money = money # 订单金额 self.province = province # 销售省份 def __str__(self): return f"{self.date}, {self.order_id}, {self.money}, {self.province}" def to_json(self): d = {"date": self.date, "order_id": self.order_id, "money": self.money, "province": self.province} import json return json.dumps(d)