写一个pycharm图书管理系统代码，并实现弹窗

以下是一个使用Python Tkinter库实现简单图书管理系统的代码示例，其中包含弹窗的实现：

from tkinter import *
from tkinter import messagebox

class Book:
    def __init__(self, title, author, isbn, year):
        self.title = title
        self.author = author
        self.isbn = isbn
        self.year = year

class Library:
    def __init__(self):
        self.books = []

    def add_book(self, book):
        self.books.append(book)

    def remove_book(self, book):
        self.books.remove(book)

    def search_book(self, title):
        for book in self.books:
            if book.title == title:
                return book

    def display_books(self):
        book_list = []
        for book in self.books:
            book_list.append(f"{book.title} by {book.author} ({book.year})")
        return "\n".join(book_list)

class GUI:
    def __init__(self, library):
        self.library = library
        self.window = Tk()
        self.window.title("图书管理系统")
        self.window.geometry("400x300")

        # 标题
        self.title_label = Label(self.window, text="图书管理系统", font=("Arial", 20))
        self.title_label.pack()

        # 添加书籍
        self.add_frame = Frame(self.window)
        self.add_frame.pack(pady=10)
        self.add_label = Label(self.add_frame, text="添加书籍", font=("Arial", 16))
        self.add_label.pack(side=LEFT)
        self.add_title_label = Label(self.add_frame, text="书名")
        self.add_title_label.pack()
        self.add_title_entry = Entry(self.add_frame)
        self.add_title_entry.pack()
        self.add_author_label = Label(self.add_frame, text="作者")
        self.add_author_label.pack()
        self.add_author_entry = Entry(self.add_frame)
        self.add_author_entry.pack()
        self.add_isbn_label = Label(self.add_frame, text="ISBN号")
        self.add_isbn_label.pack()
        self.add_isbn_entry = Entry(self.add_frame)
        self.add_isbn_entry.pack()
        self.add_year_label = Label(self.add_frame, text="出版年份")
        self.add_year_label.pack()
        self.add_year_entry = Entry(self.add_frame)
        self.add_year_entry.pack()
        self.add_button = Button(self.add_frame, text="添加", command=self.add_book)
        self.add_button.pack()

        # 删除书籍
        self.remove_frame = Frame(self.window)
        self.remove_frame.pack(pady=10)
        self.remove_label = Label(self.remove_frame, text="删除书籍", font=("Arial", 16))
        self.remove_label.pack(side=LEFT)
        self.remove_title_label = Label(self.remove_frame, text="书名")
        self.remove_title_label.pack()
        self.remove_title_entry = Entry(self.remove_frame)
        self.remove_title_entry.pack()
        self.remove_button = Button(self.remove_frame, text="删除", command=self.remove_book)
        self.remove_button.pack()

        # 查找书籍
        self.search_frame = Frame(self.window)
        self.search_frame.pack(pady=10)
        self.search_label = Label(self.search_frame, text="查找书籍", font=("Arial", 16))
        self.search_label.pack(side=LEFT)
        self.search_title_label = Label(self.search_frame, text="书名")
        self.search_title_label.pack()
        self.search_title_entry = Entry(self.search_frame)
        self.search_title_entry.pack()
        self.search_button = Button(self.search_frame, text="查找", command=self.search_book)
        self.search_button.pack()

        # 显示书籍
        self.display_frame = Frame(self.window)
        self.display_frame.pack(pady=10)
        self.display_label = Label(self.display_frame, text="所有书籍", font=("Arial", 16))
        self.display_label.pack(side=LEFT)
        self.display_text = Text(self.display_frame, height=5, width=30)
        self.display_text.pack()
        self.display_button = Button(self.display_frame, text="显示", command=self.display_books)
        self.display_button.pack()

    def add_book(self):
        title = self.add_title_entry.get()
        author = self.add_author_entry.get()
        isbn = self.add_isbn_entry.get()
        year = self.add_year_entry.get()
        if not title or not author or not isbn or not year:
            messagebox.showerror("错误", "请填写所有字段")
            return
        book = Book(title, author, isbn, year)
        self.library.add_book(book)
        messagebox.showinfo("提示", "书籍添加成功")
        self.add_title_entry.delete(0, END)
        self.add_author_entry.delete(0, END)
        self.add_isbn_entry.delete(0, END)
        self.add_year_entry.delete(0, END)

    def remove_book(self):
        title = self.remove_title_entry.get()
        if not title:
            messagebox.showerror("错误", "请填写书名")
            return
        book = self.library.search_book(title)
        if not book:
            messagebox.showerror("错误", "未找到该书")
            return
        self.library.remove_book(book)
        messagebox.showinfo("提示", "书籍删除成功")
        self.remove_title_entry.delete(0, END)

    def search_book(self):
        title = self.search_title_entry.get()
        if not title:
            messagebox.showerror("错误", "请填写书名")
            return
        book = self.library.search_book(title)
        if not book:
            messagebox.showerror("错误", "未找到该书")
            return
        messagebox.showinfo("提示", f"{book.title} by {book.author} ({book.year})")

    def display_books(self):
        books = self.library.display_books()
        self.display_text.delete("1.0", END)
        self.display_text.insert(END, books)

    def run(self):
        self.window.mainloop()

# 测试
library = Library()
gui = GUI(library)
gui.run()

在这个示例中，我们创建了一个GUI类，其中包含添加、删除、查找和显示书籍的方法。每个方法都与一个Tkinter窗口小部件相关联，例如Button、Label和Entry。当用户单击按钮时，相关方法将被调用。如果用户未填写所有字段或未找到所需书籍，则会出现相应的消息框。在添加书籍和删除书籍方法中，如果成功执行操作，则会出现相应的消息框。在查找书籍方法中，如果找到所需书籍，则会出现相应的消息框，显示该书籍的信息。在显示所有书籍的方法中，将创建一个多行文本框，并将所有书籍的信息插入其中。最后，我们创建一个Library对象和GUI对象，并运行GUI。