【练手】tkinter写的本地注册登录窗口

麦米尔加弗德

看网上教程学的，做教程的人自己也没说清楚，只是写了运行就完事了
问一下，最后的函数嵌套定义，我看起来感觉非常不舒服，能否拆成两个函数，我试过了，失败.........
我需要去看开发者文档、、、、实在不行我就只能接受这个格式了。。。。理解没问题，就是有点接受不了

代码可以给学习tkinter的人一个很好的示范，不过调用的组件有点少

[Python] 纯文本查看 复制代码

import tkinter as tk
import pickle
import tkinter.messagebox

#from PIL import Image,ImageTk
#tkinter要加载jpg和png要使用PIL模块！

window=tk.Tk()
window.title('Python example')
window.geometry('450x300')

canvas = tk.Canvas(window,height=200,width=500)
'''
#PIL加载图片，jpg png
img = Image.open('timg.jpg')
img_file = ImageTk.PhotoImage(img)
imglabel = tk.Label(window, image=img_file)
imglabel.pack(side='bottom')
'''
#使用原生的tk对象加载的图片
img_file = tk.PhotoImage(file='welcome.gif')
image = canvas.create_image(0,0,anchor='nw',image=img_file)
canvas.pack(side='top')

tk.Label(window, text='User name: ').place(x=50, y= 150)
tk.Label(window, text='Password: ').place(x=50, y= 190)

# 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()
var_usr_name.set('example@python.com')
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)

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.pickle', '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.showerror(message='Error, your password is wrong, try again.')
    else:
        is_sign_up = tk.messagebox.askyesno(title='Welcome',
                               message='You have not sign up yet. Sign up today?')
        if is_sign_up:
            usr_sign_up()
         
def usr_sign_up():
    def creat_new():
        np = new_pwd.get()
        npf = new_pwd_confirm.get()
        nn = new_name.get()
        with open('usrs_info.pickle', 'rb') as usr_file:
            exist_usr_info = pickle.load(usr_file)
            print(exist_usr_info)
        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('example@python.com')
    tk.Label(window_sign_up, text='User name: ').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_usr_pwd = tk.Entry(window_sign_up, textvariable=new_pwd, show='*')
    entry_usr_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_usr_pwd_confirm = tk.Entry(window_sign_up, textvariable=new_pwd_confirm, show='*')
    entry_usr_pwd_confirm.place(x=150, y=90)

    btn_comfirm_sign_up = tk.Button(window_sign_up, text='Sign up', command=creat_new)
    btn_comfirm_sign_up.place(x=150, y=130)

# 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()

使用的图片

51cbb

学习了，感谢分享！

麦米尔加弗德

大概是高阶函数、