python如何做一个登录注册界面

python做一个登录注册界面的方法：首先初始化一个window界面，并使用画布实现欢迎的logo；然后用代码实现登录和注册按钮；接着并进行登录判断代码；最后完成注册界面即可。

【相关学习推荐：python视频教程】

python做一个登录注册界面的方法：

一、登录界面

1、首先初始化一个window界面

        window = tk.Tk()        window.title('Welcome to Mofan Python')        window.geometry('450x300')        .        .        .        window.mainloop()

2、界面需要一个欢迎的logo,主要使用画布实现

        #welcome image        #创建一个200X500的画布        canvas =  tk.Canvas(window,height = 200,width = 500)        #logo的路径        image_file = tk.PhotoImage(file = 'E:\\welcome.gif')        #什么位置插入logo图片        image = canvas.create_image(0,0,anchor = 'nw',image = image_file)        canvas.pack(side = 'top')

3、接下来主要是登录界面的代码实现

        tk.Label(window,text = 'Username:').place(x = 50,y = 150)        tk.Label(window,text = 'Password:').place(x = 50,y = 190)            var_usr_name = tk.StringVar()        #默认值为MrZhangxd@python.com        var_usr_name.set('MrZhangxd@python.com')        var_usr_pwd = tk.StringVar()        entry_usr_name = tk.Entry(window,textvariable = var_usr_name)        entry_usr_name.place(x = 160,y = 150)            entry_usr_pwd = tk.Entry(window,textvariable = var_usr_pwd,show ='*')        entry_usr_pwd.place(x = 160,y = 190)

4、登录和注册按钮的实现代码

        #Login and Sign up button        # command = usr_login 调用usr_login函数        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)

5、进行登录判断代码：主要用函数判断

声明usr_login函数

            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)                except FileNotFoundError:                    with open('usrs_info','wb') as usr_file:                        usrs_info = {'admin':'admin'}                        pickle.dump(usrs_info,usr_file)                if usr_name in usrs_info:                    if usr_pwd == usrs_info[usr_name]:                        tk.messagebox.showinfo(title = 'Welcome',message = 'How are you?' + usr_name)                    else:                        tk.messagebox.showinfo(message = 'Error,your password is wrong,try again.')                else:                    is_sign_up = tk.messagebox.askyesno('Welcome','You hava not sign up yet.Sign up today?')                                if is_sign_up:                        usr_sign_up()

登录用户不存在需要注册

二、注册界面

差不多和登录界面一样，然后不进行细细的说明了，有不懂地方的可以给下文邮件地址发邮箱。

    def usr_sign_up():        def sign_to_Mofan_Python():                np = new_pwd.get()                npf = new_pwd_confirm.get()                nn = new_name.get()            with open('usrs_info','rb') as usr_file:                exist_usr_info = pickle.load(usr_file)            if np!= npf:                tk.messagebox.showerror('Error','Password and confirm password must be the same!')            elif nn in exist_usr_info:                tk.messagebox.showerror('Error','The user has already signed up!')            else:                exist_usr_info[nn] = np                with open('usrs_info.pickle','wb') as usr_file:                    pickle.dump(exist_usr_info,usr_file)                tk.messagebox.showinfo('Welcome','You have successfully signed up!')                window_sign_up.destroy()        window_sign_up = tk.Toplevel(window)        window_sign_up.geometry('350x200')        window_sign_up.title('Sign up window')            new_name = tk.StringVar()        new_name.set('MrZhangxd@python.com')        tk.Label(window_sign_up,text = 'Username:').place(x = 10,y = 10)        entry_new_name = tk.Entry(window_sign_up,textvariable = new_name)        entry_new_name.place(x = 150,y = 10)            new_pwd = tk.StringVar()        tk.Label(window_sign_up,text = 'Password:').place(x = 10,y = 50)        entry_new_pwd = tk.Entry(window_sign_up,textvariable = new_pwd,show = '*')        entry_new_pwd.place(x = 150,y = 50)            new_pwd_confirm = tk.StringVar()        tk.Label(window_sign_up,text = 'Confirm password:').place(x = 10,y = 90)        entry_comfirm_sign_up = tk.Entry(window_sign_up,textvariable = new_pwd_confirm,show = '*')        entry_comfirm_sign_up.place(x = 150,y = 90)            btn_comfirm_sign_up = tk.Button(window_sign_up,text = 'Sign up',command = sign_to_Mofan_Python)        btn_comfirm_sign_up.place(x = 150,y = 130)

三、运行界面截图

登录界面

注册界面

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