图书管理系统借书还书伪代码Python

以下是一个简单的图书管理系统借书还书的伪代码Python示例：

# 定义一个Book类
class Book:
    def __init__(self, title, author, ISBN, status):
        self.title = title  # 书名
        self.author = author  # 作者
        self.ISBN = ISBN  # ISBN号
        self.status = status  # 借阅状态

# 定义一个Library类
class Library:
    def __init__(self):
        self.books = []  # 图书馆中的所有书籍

    # 添加书籍
    def add_book(self, book):
        self.books.append(book)

    # 删除书籍
    def remove_book(self, book):
        self.books.remove(book)

    # 借书
    def borrow_book(self, book):
        if book.status == "available":
            book.status = "borrowed"
            print("借书成功！")
        else:
            print("这本书已经被借走了！")

    # 还书
    def return_book(self, book):
        if book.status == "borrowed":
            book.status = "available"
            print("还书成功！")
        else:
            print("这本书已经在图书馆了！")

# 创建几本书
book1 = Book("Python编程从入门到实践", "Eric Matthes", "978-7-121-34084-6", "available")
book2 = Book("流畅的Python", "Luciano Ramalho", "978-7-121-34084-7", "borrowed")
book3 = Book("Python核心编程", "Wesley Chun", "978-7-121-34084-8", "available")

# 创建一个图书馆
library = Library()

# 将书籍添加到图书馆
library.add_book(book1)
library.add_book(book2)
library.add_book(book3)

# 借书
library.borrow_book(book1)
library.borrow_book(book2)

# 还书
library.return_book(book1)
library.return_book(book2)