数据存储在独立的列表中

titles = ["1984", "The Hobbit"] statuses = ["Available", "Checked Out"]

显示书籍的函数

def display_books(): for i in range(len(titles)): status = statuses[i] print(titles[i] + " - " + status)

显示书籍

print("初始图书馆状态:") display_books()

向图书馆添加新书

1# 添加新书但未更新状态
2titles.append("Dune")  # 忘记更新 `statuses`

1print("\n添加 'Dune' 后:")
2display_books()

1# 借阅书籍的函数
2def borrow_book(book_title):
3    if book_title in titles:
4        index = titles.index(book_title)
5        statuses[index] = "Checked Out"  # 如果索引缺失，可能会导致错误
6    else:
7        print("书籍 " + book_title + " 在图书馆中未找到。")

1# 尝试借阅新书
2try:
3    borrow_book("Dune")
4except IndexError as e:
5    print("错误:", e)

1book1 = ("1984", "Available", "George Orwell")
2book2 = ("The Hobbit", "Checked Out", "J.R.R. Tolkien")

代码示例

1library = [book1, book2]

1for book in library:
2    print("书名:", book[0], "| 状态:", book[1], "| 作者:", book[2])

代码示例

1书名: 1984 | 状态: Available | 作者: George Orwell
2书名: The Hobbit | 状态: Checked Out | 作者: J.R.R. Tolkien

1def borrow_book_tuple(library, title):
2    # 遍历图书馆（书籍列表），`i` 为索引，`book` 为包含书籍信息的元组
3    for i, book in enumerate(library):
4        # 检查当前书籍的标题是否与请求的标题匹配
5        if book[0] == title:
6            # 如果找到书籍，检查其是否可用（book[1] 表示状态）
7            if book[1] == "Available":
8                # 如果书籍可用，则将其状态更新为 "Checked Out"
9                # 由于元组不可变，需创建一个新的元组
10                library[i] = (book[0], "Checked Out", book[2])
11                print(title, "借阅成功。")  # 打印确认消息
12            else:
13                # 如果书籍已被借出（不可用），则提示已借出
14                print(title, "已借出。")
15            return  # 一旦找到并处理了书籍，就退出函数
16    # 如果在图书馆中未找到指定标题的书籍，则打印提示信息
17    print(title, "在图书馆中未找到。")

1# 步骤1：创建 Book 类并定义属性
2class Book:
3    def __init__(self, title, status="Available"):
4        self.title = title
5        self.status = status

1class Book:
2    def __init__(self, title, status="Available"):
3        self.title = title
4        self.status = status
5
6    def display(self):
7        print(self.title + " - " + self.status)

1class Book:
2    def __init__(self, title, status="Available"):
3        self.title = title
4        self.status = status
5
6    def display(self):
7        print(self.title + " - " + self.status)
8        
9    def borrow(self):
10        if self.status == "Available":
11            self.status = "Checked Out"
12            print(self.title + " 已被借出。")
13        else:
14            print(self.title + " 已经被借出。")

1class Book:
2    def __init__(self, title, status="Available"):
3        self.title = title
4        self.status = status
5
6    def display(self):
7        print(self.title + " - " + self.status)
8        
9    def borrow(self):
10        if self.status == "Available":
11            self.status = "Checked Out"
12            print(self.title + " 已被借出。")
13        else:
14            print(self.title + " 已经被借出。")
15
16# 创建书籍对象
17book1 = Book("1984")
18book2 = Book("The Hobbit", "Checked Out")
19book3 = Book("Dune")  # 添加新书

1class Book:
2    def __init__(self, title, status="Available"):
3        self.title = title
4        self.status = status
5
6    def display(self):
7        print(self.title + " - " + self.status)
8        
9    def borrow(self):
10        if self.status == "Available":
11            self.status = "Checked Out"
12            print(self.title + " 已被借出。")
13        else:
14            print(self.title + " 已经被借出。")
15
16book1 = Book("1984")
17book2 = Book("The Hobbit", "Checked Out")
18book3 = Book("Dune")  
19
20# 显示书籍
21book1.display()
22book2.display()
23book3.display()

1class Book:
2    def __init__(self, title, status="Available"):
3        self.title = title
4        self.status = status
5
6    def display(self):
7        print(self.title + " - " + self.status)
8
9    def borrow(self):
10      if self.status == "Available":
11          self.status = "Checked Out"
12          print(self.title + " 已被借出。")
13      else:
14          print(self.title + " 已经被借出。")
15
16book1 = Book("1984")
17book2 = Book("The Hobbit", "Checked Out")
18book3 = Book("Dune") 
19
20# 借阅书籍
21book3.borrow()
22book3.display()