簡單實現圖書管理系統

類和面向對象編程

“”"
小鐘圖書管理系統
1. 查詢
2. 增加
3. 借閱
4. 歸還
5. 退出
“”"

class Book(object):def __init__(self,name,author,state,book_position):self.name = nameself.author = authorself.state = state # 判斷書的狀態0：借出 1：未借出self.book_position = book_position# 打印對象時自動調用str（對象）def __str__(self):return f"書名：《{self.name}》，作者：<{self.author}>,狀態：<{self.state}>,位置：<{self.book_position}>" class Book_Manag(object): books = []def start(self):"對圖書信息進行初始化"b1 = Book("三體", "劉慈欣", 1, "SN700")b2 = Book("白夜行", "東野圭吾", 1, "SN705")b3 = Book("C語言程序設計", "譚浩強", 1, "SN711")b4 = Book("放學后", "東野圭吾", 1, "SN706")b5 = Book("秘密", "東野圭吾", 1, "SN755")b6 = Book("解憂雜貨店", "東野圭吾", 1, "SN752")b7 = Book("超新星紀元", "劉慈欣", 1, "SN857")self.books.append(b1)self.books.append(b2)self.books.append(b3)self.books.append(b4)self.books.append(b5)self.books.append(b6)self.books.append(b7) def directory(self):self.start()while True:print("""小鐘圖書管理系統：1. 查詢2. 增加3. 借閱4. 歸還5. 退出""")chioce = int(input("輸入你想要的操作:"))if chioce == 1:name = input("你想查詢書籍的書名：")self.checkBook(name)elif chioce == 2:self.addBook()elif chioce == 3:self.borrowBook()elif chioce == 4:self.return_book()elif chioce == 5:print("退出系統！")breakelse:print("您的輸入有誤，請重新輸入！")# 添加書籍def addBook(self):name = input("需要添加書籍的書名：")self.books.append(Book(name,input("作者："),1,input("位置：")))print(f"圖書{name}添加成功！")# 借書def borrowBook(self):name = input("借閱書籍名稱：")Books = self.checkBook(name)# 判斷書的狀態if Books !=None:if Books.state == 0:print(f"書籍《{name}》已經借出！")elif Books.state == 1:print(f"書籍《{name}》借閱成功！")Books.state = 0else:print(f"書籍《{name}》不存在！")# 歸還書籍def return_book(self):name = input("歸還書籍名稱：")Books = self.checkBook(name)if Books != None :if Books.state == 1:print(f"書籍《{name}》已經借出！")elif Books.state == 0:print(f"書籍《{name}》歸還成功！")Books.state = 1else:print(f"書籍《{name}》與借出的不一致！")def checkBook(self,name):"查找書籍是否存在"for book in self.books:# book：Book類創建的對象if book.name == name:print(book)return bookelse:return print(f"你查詢的書籍《{name}》不在系統中！請重新輸入！")book_Manag = Book_Manag() book_Manag.directory()

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