代码：

# 定义联系人类
class Contact:
    def __init__(self, name, phone, street, city, province, postcode):
        self.name = name
        self.phone = phone
        self.street = street
        self.city = city
        self.province = province
        self.postcode = postcode

    def __str__(self):
        return f"姓名：{self.name}；电话：{self.phone}；地址：{self.province} {self.city} {self.street}，{self.postcode}"

# 定义通讯录类
class AddressBook:
    def __init__(self):
        self.contacts = []

    # 添加联系人
    def add_contact(self, contact):
        self.contacts.append(contact)
        print(f"{contact.name}已添加到通讯录。")

    # 显示所有联系人
    def show_contacts(self):
        print("所有联系人：")
        for contact in self.contacts:
            print(contact)

    # 查找联系人
    def find_contact(self, name):
        for contact in self.contacts:
            if contact.name == name:
                print(contact)
                return
        print(f"未找到姓名为{name}的联系人。")

    # 修改联系人
    def edit_contact(self, name):
        for contact in self.contacts:
            if contact.name == name:
                print(f"原信息：{contact}")
                new_name = input("请输入新姓名：")
                new_phone = input("请输入新电话：")
                new_street = input("请输入新街道：")
                new_city = input("请输入新城市：")
                new_province = input("请输入新省份：")
                new_postcode = input("请输入新邮编：")
                contact.name = new_name
                contact.phone = new_phone
                contact.street = new_street
                contact.city = new_city
                contact.province = new_province
                contact.postcode = new_postcode
                print(f"{name}的信息已更新为{contact}.")
                return
        print(f"未找到姓名为{name}的联系人。")

    # 删除联系人
    def del_contact(self, name):
        for contact in self.contacts:
            if contact.name == name:
                self.contacts.remove(contact)
                print(f"{name}已从通讯录中删除。")
                return
        print(f"未找到姓名为{name}的联系人。")

# 主程序
if __name__ == '__main__':
    address_book = AddressBook()
    while True:
        print("请选择操作：")
        print("1. 添加联系人")
        print("2. 显示所有联系人")
        print("3. 查找联系人")
        print("4. 修改联系人")
        print("5. 删除联系人")
        print("0. 退出程序")
        choice = input()
        if choice == "1":
            name = input("请输入姓名：")
            phone = input("请输入电话：")
            street = input("请输入街道：")
            city = input("请输入城市：")
            province = input("请输入省份：")
            postcode = input("请输入邮编：")
            contact = Contact(name, phone, street, city, province, postcode)
            address_book.add_contact(contact)
        elif choice == "2":
            address_book.show_contacts()
        elif choice == "3":
            name = input("请输入要查找的姓名：")
            address_book.find_contact(name)
        elif choice == "4":
            name = input("请输入要修改的姓名：")
            address_book.edit_contact(name)
        elif choice == "5":
            name = input("请输入要删除的姓名：")
            address_book.del_contact(name)
        elif choice == "0":
            print("程序已退出。")
            break
        else:
            print("无效的选择，请重新输入。")结果图;