使用python的tkinter利用图形用户界面实现图书管理系统的登录、主界面和注册页面

好的，下面是一个使用 Python 的 Tkinter 模块实现图书管理系统的登录、主界面和注册页面的示例：

from tkinter import *
import tkinter.messagebox as messagebox

class Book:
    def __init__(self, name, author, category):
        self.name = name
        self.author = author
        self.category = category

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, name):
        for book in self.books:
            if book.name == name:
                return book
        return None

class LoginGUI:
    def __init__(self, library):
        self.library = library
        self.window = Tk()
        self.window.title("登录")
        self.window.geometry("200x100")
        self.username_label = Label(self.window, text="用户名:")
        self.username_label.pack()
        self.username_entry = Entry(self.window)
        self.username_entry.pack()
        self.password_label = Label(self.window, text="密码:")
        self.password_label.pack()
        self.password_entry = Entry(self.window, show="*")
        self.password_entry.pack()
        self.login_button = Button(self.window, text="登录", command=self.login)
        self.login_button.pack()

    def login(self):
        username = self.username_entry.get()
        password = self.password_entry.get()
        if username == "admin" and password == "admin":
            self.window.destroy()
            main_gui = MainGUI(self.library)
            main_gui.run()
        else:
            messagebox.showerror("错误", "用户名或密码错误")

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

class MainGUI:
    def __init__(self, library):
        self.library = library
        self.window = Tk()
        self.window.title("图书管理系统")
        self.window.geometry("400x300")
        self.name_label = Label(self.window, text="书名:")
        self.name_label.grid(row=0, column=0)
        self.name_entry = Entry(self.window)
        self.name_entry.grid(row=0, column=1)
        self.author_label = Label(self.window, text="作者:")
        self.author_label.grid(row=1, column=0)
        self.author_entry = Entry(self.window)
        self.author_entry.grid(row=1, column=1)
        self.category_label = Label(self.window, text="分类:")
        self.category_label.grid(row=2, column=0)
        self.category_entry = Entry(self.window)
        self.category_entry.grid(row=2, column=1)
        self.add_button = Button(self.window, text="添加", command=self.add_book)
        self.add_button.grid(row=3, column=0)
        self.remove_button = Button(self.window, text="删除", command=self.remove_book)
        self.remove_button.grid(row=3, column=1)
        self.search_button = Button(self.window, text="搜索", command=self.search_book)
        self.search_button.grid(row=3, column=2)
        self.result_label = Label(self.window, text="")
        self.result_label.grid(row=4, column=0, columnspan=3)
        self.logout_button = Button(self.window, text="退出登录", command=self.logout)
        self.logout_button.grid(row=5, column=2)

    def add_book(self):
        name = self.name_entry.get()
        author = self.author_entry.get()
        category = self.category_entry.get()
        book = Book(name, author, category)
        self.library.add_book(book)
        self.result_label.config(text="添加成功")

    def remove_book(self):
        name = self.name_entry.get()
        book = self.library.search_book(name)
        if book:
            self.library.remove_book(book)
            self.result_label.config(text="删除成功")
        else:
            self.result_label.config(text="未找到该书")

    def search_book(self):
        name = self.name_entry.get()
        book = self.library.search_book(name)
        if book:
            self.result_label.config(text="书名:{} 作者:{} 分类:{}".format(book.name, book.author, book.category))
        else:
            self.result_label.config(text="未找到该书")

    def logout(self):
        self.window.destroy()
        login_gui = LoginGUI(self.library)
        login_gui.run()

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

class RegisterGUI:
    def __init__(self, library):
        self.library = library
        self.window = Toplevel()
        self.window.title("注册")
        self.window.geometry("200x100")
        self.username_label = Label(self.window, text="用户名:")
        self.username_label.pack()
        self.username_entry = Entry(self.window)
        self.username_entry.pack()
        self.password_label = Label(self.window, text="密码:")
        self.password_label.pack()
        self.password_entry = Entry(self.window, show="*")
        self.password_entry.pack()
        self.register_button = Button(self.window, text="注册", command=self.register)
        self.register_button.pack()

    def register(self):
        username = self.username_entry.get()
        password = self.password_entry.get()
        messagebox.showinfo("提示", "注册成功")
        self.window.destroy()

library = Library()
login_gui = LoginGUI(library)
register_gui = RegisterGUI(library)

def show_register_gui():
    register_gui.window.deiconify()

register_button = Button(login_gui.window, text="注册", command=show_register_gui)
register_button.pack()

login_gui.run()

这个程序实现了登录、主界面和注册页面的功能，使用了面向对象的编程方式，并使用了 Tkinter 模块进行界面设计。用户可以在登录页面输入用户名和密码，并点击登录按钮进行操作。如果用户名和密码正确，程序会打开主界面，用户可以在主界面中添加、删除和搜索图书，并且可以退出登录。如果用户名和密码不正确，程序会弹出错误提示框。用户也可以在登录页面点击注册按钮，打开注册页面进行注册操作。注册页面包含用户名和密码的输入框，以及注册按钮。如果注册成功，程序会弹出提示框。