python的tkinter如何实现简单登录

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通过python的tkinter实现简单的注册登录

参考文章：https://www.yisu.com/article/197751.htm

编写一个用户登录界面，用户可以登录账户信息，如果账户已经存在，可以直接登录，登录名或者登录密码输入错误会提示，如果账户不存在，提示用户注册，点击注册进去注册页面，输入注册信息，确定后便可以返回登录界面进行登录。进入个人主页可以对个人信息进行修改。

代码

import tkinter as tkfrom tkinter import messagebox  # import this to fix messagebox errorimport pickleusername = ''# 登录界面def welcome():    def usr_login():        usr_name = var_usr_name.get()        usr_pwd = var_usr_pwd.get()        try:            with open('usrs_info.pickle', 'rb') as usr_file:                usrs_info = pickle.load(usr_file)                usr_file.close()        except FileNotFoundError:            with open('usrs_info.pickle', 'wb') as usr_file:                usrs_info = {'admin': 'admin'}                pickle.dump(usrs_info, usr_file)                usr_file.close()        if usr_name in usrs_info:            if usr_pwd == usrs_info[usr_name]:                tk.messagebox.showinfo(title='Welcome', message='How are you? ' + usr_name)                # 进入主页                global username                username= usr_name                print(username)                window.destroy()                index_page()            else:                tk.messagebox.showerror(message='Error, your password is wrong, try again.')        else:            is_sign_up = tk.messagebox.askyesno('Welcome', 'You have not signed up yet. Sign up today?')            if is_sign_up:                usr_sign_up()    window = tk.Tk()    window.title('Welcome to the login page!')    window.geometry('450x300')    # welcome image    canvas = tk.Canvas(window, height=200, width=500)    image_file = tk.PhotoImage(file='welcome.gif')    image = canvas.create_image(0, 0, anchor='nw', image=image_file)    canvas.pack(side='top')    # user information    tk.Label(window, text='User name: ').place(x=50, y=150)    tk.Label(window, text='Password: ').place(x=50, y=190)    var_usr_name = tk.StringVar()    entry_usr_name = tk.Entry(window, textvariable=var_usr_name)    entry_usr_name.place(x=160, y=150)    var_usr_pwd = tk.StringVar()    entry_usr_pwd = tk.Entry(window, textvariable=var_usr_pwd, show='*')    entry_usr_pwd.place(x=160, y=190)    # login and sign up button    btn_login = tk.Button(window, text='Login', command=usr_login)    btn_login.place(x=170, y=230)    btn_sign_up = tk.Button(window, text='Sign up', command=usr_sign_up)    btn_sign_up.place(x=270, y=230)    window.mainloop()# 个人信息页面def index_page():    global username    index_window = tk.Tk()    index_window.title('请选择你要进行的操作')    index_window.geometry('300x200')    tk.Label(index_window,text="你好!"+username).place(x=50,y=50)    # 修改个人信息    def change_personal_info():        # 新窗口        change_info__window = tk.Toplevel()        change_info__window.title('修改个人信息')        change_info__window.geometry('400x300')        # 修改个人信息点击页面        def change_info_click():            name = new_name.get()            psw = new_password.get()            conpsw = new_password_confirm.get()            with open('usrs_info.pickle', 'rb') as f:                usrs_info = pickle.load(f)                f.close()            if conpsw!= psw:                tk.messagebox.showerror(title='Error', message='两次密码不一致请重新输入！')            else:                if name in usrs_info:                    tk.messagebox.showerror(title='Error', message='用户名已存在，请重新换一个新用户名')                else:                    # 创建新                    usrs_info.pop(username)                    usrs_info[name] = psw                    with open('usrs_info.pickle', 'wb') as file:                        pickle.dump(usrs_info, file)                        f.close()                    tk.messagebox.showinfo(title='修改成功', message='修改成功！')                    change_info__window.destroy()                    tk.messagebox.showinfo(title='请重新登录！', message='请重新登录！')                    index_window.destroy()                    welcome()        # 修改用户名变量        new_name = tk.StringVar()        tk.Label(change_info__window, text="用户名：").place(x=50, y=50)        new_name_entry = tk.Entry(change_info__window, show=None, textvariable=new_name).place(x=120, y=50)        # 修改新密码变量        new_password = tk.StringVar()        tk.Label(change_info__window, text='密码:').place(x=50, y=80)        new_password_entry = tk.Entry(change_info__window, show="*", textvariable=new_password).place(x=120, y=80)        # 修改新确认密码变量        new_password_confirm = tk.StringVar()        tk.Label(change_info__window, text="确认密码：").place(x=50, y=110)        new_password_confirm_entry = tk.Entry(change_info__window, show="*", textvariable=new_password_confirm).place(x=120,                                                                                                 y=110)        # 修改信息按钮绑定        sign_window_button = tk.Button(change_info__window, text='确认', command=change_info_click).place(x=150, y=140)    # 修改个人信息按钮绑定    change_info_button = tk.Button(index_window,text='修改个人信息',command=change_personal_info).place(x=100,y=100)# 注册页面def usr_sign_up():    sign_up_window = tk.Toplevel()    sign_up_window.title('注册')    sign_up_window.geometry('400x200')    # 注册点击事件    def sign_up_hit():        name = new_name.get()        psw = new_password.get()        conpsw = new_password_confirm.get()        with open('usrs_info.pickle', 'rb') as usr_file:            usrs_info = pickle.load(usr_file)        if psw!=conpsw:            tk.messagebox.showerror(title='Error', message='两次密码不一致请重新输入！')        else:            if name in usrs_info:                tk.messagebox.showerror(title='Error', message='用户名已存在')            else:                # 创建新                usrs_info[name] = psw                with open('usrs_info.pickle', 'wb') as f:                    pickle.dump(usrs_info,f)                tk.messagebox.showinfo(title='注册成功', message='注册成功！')                sign_up_window.destroy()    # 注册名变量    new_name = tk.StringVar()    tk.Label(sign_up_window,text="注册名：").place(x=50,y=50)    new_name_entry = tk.Entry(sign_up_window,show=None,textvariable=new_name).place(x=120,y=50)    # 注册密码变量    new_password = tk.StringVar()    tk.Label(sign_up_window,text='密码:').place(x=50,y=80)    new_password_entry = tk.Entry(sign_up_window,show="*",textvariable=new_password).place(x=120,y=80)    # 注册确认密码变量    new_password_confirm= tk.StringVar()    tk.Label(sign_up_window,text="确认密码：").place(x=50,y=110)    new_password_confirm_entry = tk.Entry(sign_up_window,show="*",textvariable=new_password_confirm).place(x=120,y=110)    # 注册按钮和点击事件绑定    sign_window_button = tk.Button(sign_up_window,text='注册',command=sign_up_hit).place(x=150,y=140)welcome()

截图

登录页面

注册页面

个人主页

修改个人信息失败

修改个人信息成功

重新登录twb

发现已注销除非重新注册。

发现成功修改个人信息。登陆上。

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