python如何做一个登录注册界面

互联网 20-8-20

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。

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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