TK_GUI简单登录界面

import tkinter as tk
from tkinter.messagebox import *
import pickle
import os
root=tk.Tk()

root.title('登录')
root.geometry('500x400+500+100')
root.resizable(0,0)
#canvas=tk.Canvas(root,bg='blue',height=500,width=300)
imagepath=os.path.dirname(__file__) + './welcom.png'
image_file=tk.PhotoImage(file=imagepath)
#image=canvas.create_image(0,0,anchor='nw',image=image_file)
image_label=tk.Label(root,image=image_file)
image_label.place(x=0,y=0)

user_label=tk.Label(root,text='用户名:',font=('宋体',14,'bold'))
user_label.place(x=100,y=250)

usr_vars=tk.StringVar()
usr_vars.set('python@2019.com.cn')
user_enter=tk.Entry(root,textvariable=usr_vars)
user_enter.place(x=180,y=250)


passwd_label=tk.Label(root,text='密码:',font=('宋体',14,'bold'))
passwd_label.place(x=100,y=300)

passwd_vars=tk.StringVar()
passwd_enter=tk.Entry(root,textvariable=passwd_vars,show='*')
passwd_enter.place(x=180,y=300)
def sign_in():
    usr_text=usr_vars.get()
    passwd_text=passwd_vars.get()
    try:
        with open('user_info.pickle','rb') as userfile:
            user_info=pickle.load(userfile)
    except FileNotFoundError:
        with open('user_info.pickle','wb') as userfile:
            user_info={'admin':'admin'}
            pickle.dump(user_info,userfile)
    if  usr_text in user_info:
        if passwd_text==user_info[usr_text]:
            showinfo('Welcome','How are you?'+ usr_text)
        else:
            if usr_text=='' or passwd_text=='':
                showinfo('错误','用户名或者密码不能为空')
            else:
                showinfo('Error','your password wrong,try again.')
    else:
        if usr_text=='' or passwd_text=='':
            showinfo('错误','用户名或者密码不能为空')
        else:
            on_sign_up=tk.messagebox.askyesno(title='Welcome',message='You have not sign up yet.Sign up?')
            if on_sign_up:
                sign_up()
def sign_up():
    def sign_to_python():
        nn=enter1_vars.get()
        np=enter2_vars.get()
        npf=enter3_vars.get()

        with open('user_info.pickle','rb') as userfile:
            exit_user_info=pickle.load(userfile)
        if np!=npf:
            showinfo('Error','Password and confirm password')
        elif nn in exit_user_info:
            showinfo('Error','The user has already signed up!')
        else:
            exit_user_info[nn]=np
            with open('user_info.pickle','wb') as userfile:
                pickle.dump(exit_user_info,userfile)
            showinfo('Welcom','You have sign up successfully')
            window.destroy()
    
    window=tk.Toplevel(root)
    window.title('sign up')
    window.geometry('300x200')
    
    label1=tk.Label(window,text='注册账号:',font=('宋体',14,'bold'),width=12)
    label1.place(x=0,y=10)
    label2=tk.Label(window,text='新密码:',font=('宋体',14,'bold'),width=15)
    label2.place(x=0,y=50)

    label3=tk.Label(window,text='密码确认:',font=('宋体',14,'bold'),width=13)
    label3.place(x=0,y=80)
    
    enter1_vars=tk.StringVar()
    enter1_vars.set('python@2019.com.cn')
    enter1=tk.Entry(window,textvariable=enter1_vars)
    enter1.place(x=120,y=10)
    
    enter2_vars=tk.StringVar()
    enter2=tk.Entry(window,textvariable=enter2_vars)
    enter2.place(x=120,y=50)
    
    enter3_vars=tk.StringVar()
    enter3=tk.Entry(window,textvariable=enter3_vars)
    enter3.place(x=120,y=80)

    bt1=tk.Button(window,text='确定',font=('宋体',14,'bold'),command=sign_to_python)
    bt1.place(x=100,y=150)

    bt2=tk.Button(window,text='退出',font=('宋体',14,'bold'),command=window.quit)
    bt2.place(x=180,y=150)

sign_in_bt=tk.Button(root,text='Login',font=('宋体',14,'bold'),command=sign_in)
sign_in_bt.place(x=230,y=350)

sign_up_bt=tk.Button(root,text='sign up',font=('宋体',14,'bold'),command=sign_up)
sign_up_bt.place(x=350,y=350)


root.mainloop()
    

image.png

image.png

image.png