Python课程设计读者书库

根据提供的引用内容，Python课程设计读者书库是一个基于Python实现的项目，旨在帮助学生完成课程设计、毕业设计或练手项目。该项目的主要功能是实现一个读者书库，读者可以在其中添加、删除、修改和查询书籍信息。以下是该项目的一些功能和实现方法：

1. 添加书籍信息

def add_book():
    book_name = input("请输入书名：")
    author = input("请输入作者：")
    publisher = input("请输入出版社：")
    price = input("请输入价格：")
    with open("book.txt", "a") as f:
        f.write(f"{book_name},{author},{publisher},{price}\n")
    print("添加成功！")

2. 删除书籍信息

def delete_book():
    book_name = input("请输入要删除的书名：")
    with open("book.txt", "r") as f:
        lines = f.readlines()
    with open("book.txt", "w") as f:
        for line in lines:
            if book_name not in line:
                f.write(line)
    print("删除成功！")

3. 修改书籍信息

def modify_book():
    book_name = input("请输入要修改的书名：")
    with open("book.txt", "r") as f:
        lines = f.readlines()
    with open("book.txt", "w") as f:
        for line in lines:
            if book_name in line:
                author = input("请输入作者：")
                publisher = input("请输入出版社：")
                price = input("请输入价格：")
                f.write(f"{book_name},{author},{publisher},{price}\n")
                print("修改成功！")
            else:
                f.write(line)

4. 查询书籍信息

def query_book():
    book_name = input("请输入要查询的书名：")
    with open("book.txt", "r") as f:
        lines = f.readlines()
    for line in lines:
        if book_name in line:
            print(line.strip())
            break
    else:
        print("未找到该书籍！")