对给定的预约记录管理系统程序“预约记录增删改查.py”，使用面向对象方法改写该程序，将所给程序中的函数改写成类中的方法。

原始的`预约记录增删改查.py`程序可能是基于函数的命令行操作，我们可以将其转换成一个面向对象的设计，创建一个名为`AppointmentRecordManager`的类，包含四个相关的类方法来处理预约记录的增加、删除、修改和查询操作。以下是面向对象的改写版本：

class AppointmentRecord:
    def __init__(self, id, name, date, time):
        self.id = id
        self.name = name
        self.date = date
        self.time = time

class AppointmentRecordManager:
    records = []

    @classmethod
    def add_record(cls, name, date, time):
        new_id = len(cls.records) + 1
        record = AppointmentRecord(new_id, name, date, time)
        cls.records.append(record)
        return f"Appointment added successfully. ID: {new_id}"

    @classmethod
    def delete_record(cls, id):
        try:
            record_to_delete = [record for record in cls.records if record.id == id]
            if record_to_delete:
                cls.records.remove(record_to_delete[0])
                return f"Appointment with ID {id} deleted."
            else:
                return "No appointment found with that ID."
        except Exception as e:
            return str(e)

    @classmethod
    def update_record(cls, id, name=None, date=None, time=None):
        for record in cls.records:
            if record.id == id:
                if name:
                    record.name = name
                if date:
                    record.date = date
                if time:
                    record.time = time
                return f"Appointment with ID {id} updated."
        return "No appointment found with that ID."

    @classmethod
    def get_records(cls):
        return "\nID\tName\tDate\tTime\n" + '\n'.join([str(record) for record in cls.records])

if __name__ == "__main__":
    manager = AppointmentRecordManager()
    # 示例操作
    print(manager.add_record("John Doe", "2023-04-01", "10:00 AM"))
    print(manager.get_records())
    print(manager.update_record(1, name="Jane Doe", date="2023-04-05"))
    print(manager.delete_record(1))

在这个版本中，我们定义了一个`AppointmentRecord`类表示预约记录，并在`AppointmentRecordManager`类中添加了相应的方法，如`add_record`、`delete_record`、`update_record`和`get_records`。每个方法都是类方法，可以直接通过类实例调用，无需创建具体的对象。这种方式使得代码更易于维护和扩展。