下面是一个简单的通讯录管理系统的Python实现：
class Contact: def __init__(self, name, phone): self.name = name self.phone = phone class ContactBook: def __init__(self): self.contacts = [] def add_contact(self, name, phone): contact = Contact(name, phone) self.contacts.append(contact) print("Contact added successfully.") def delete_contact(self, name): for contact in self.contacts: if contact.name == name: self.contacts.remove(contact) print("Contact deleted successfully.") return print("Contact not found.") def search_contact(self, name): for contact in self.contacts: if contact.name == name: print("Contact found - Name: {}, Phone: {}".format(contact.name, contact.phone)) return print("Contact not found.") def display_contacts(self): if len(self.contacts) == 0: print("No contacts found.") else: print("Contacts:") for contact in self.contacts: print("Name: {}, Phone: {}".format(contact.name, contact.phone)) def menu(): print("1. Add Contact") print("2. Delete Contact") print("3. Search Contact") print("4. Display Contacts") print("5. Quit") contact_book = ContactBook() while True: menu() choice = int(input("Enter your choice: ")) if choice == 1: name = input("Enter name: ") phone = input("Enter phone number: ") contact_book.add_contact(name, phone) elif choice == 2: name = input("Enter name: ") contact_book.delete_contact(name) elif choice == 3: name = input("Enter name: ") contact_book.search_contact(name) elif choice == 4: contact_book.display_contacts() elif choice == 5: break else: print("Invalid choice. Please try again.")该程序使用了两个类：Contact表示一个联系人，ContactBook表示通讯录。ContactBook类包含了添加联系人、删除联系人、搜索联系人和显示联系人等方法。主程序循环显示菜单，根据用户选择执行相应的操作。
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