小登陆界面

前天晚上开始感兴趣GUI，结果现在才写出来个垃圾登陆界面，我选择死亡，
发现了很多的问题，基础过于薄弱，json的dumps,dump,load,loads和with open都还理解不透彻
代码放在下面 有很多地方没有注释，希望看官给个面子

import tkinter
import json
from tkinter import messagebox
window = tkinter.Tk()
window.title('www')
window.geometry('500x500')

var1 = tkinter.StringVar('')
var2 = tkinter.StringVar('')
var3 = tkinter.StringVar('')
print (var1)

def denglu():
    with open ('C:\\Users\\Lenovo\\Desktop\\ggg.json','r')as f:
        g = json.loads(json.load(f))
        var4 = text1.get()
        var5 = text1.get()
        if var4 in g['user']:

            if var5 in g['keys']:
                var3 = '小老弟你终于登陆了'
                tkinter.messagebox.showerror(title='成功', message=var3)
            else:
                tkinter.messagebox.showerror(title='密码错误', message='密码错误')
        else:
            print (var4)
            var3 = '你他妈的还没有注册,是否注册？'
            wtf = tkinter.messagebox.askyesno(title='错误', message=var3)
            if wtf:
                window_sign_up = tkinter.Toplevel(window)
                window_sign_up.geometry('500x500')
                window_sign_up.title('Sign up window')
                def zhuce():
                    if text3.get() in g['user']:
                        tkinter.messagebox.showerror(title='你注册过了', message='你注册过了朋友干嘛呢！')
                    else:
                        if text4.get() == text5.get():
                            tkinter.messagebox.showerror(title='成功小老弟', message='成功')
                            g['user'].append(text3.get())
                            g['keys'].append(text4.get())
                            b = json.dumps(g)
                            with open ('C:\\Users\\Lenovo\\Desktop\\ggg.json','w')as ff:
                                json.dump(b, ff)

                        else:
                            tkinter.messagebox.showerror(title='错误', message='你他们两次密码都能错？!')


                list1 = tkinter.Label(window_sign_up, text='用户名:', font=20).place(x=50, y=150)
                list2 = tkinter.Label(window_sign_up, text='密码:', font=20).place(x=50, y=200)
                list3 = tkinter.Label(window_sign_up, text='再次输入:', font=20).place(x=40, y=250)
                text3 = tkinter.Entry(window_sign_up, font=20)
                text3.place(x=150, y=150)
                text4 = tkinter.Entry(window_sign_up, font=20)
                text4.place(x=150, y=200)
                text5 = tkinter.Entry(window_sign_up, font=20)
                text5.place(x=150, y=250)
                b2 = tkinter.Button(window_sign_up, text='注册', width=15, command=zhuce).place(x=250, y=300)



            else:
                pass


def zhuce1():
    pass


# 图片
can1 = tkinter.Canvas(window,height=500,width=500)
image_file = tkinter.PhotoImage(file = 'C:\\Users\\Lenovo\\Desktop\\素材\\psb.gif')
image = can1.create_image(200,0,anchor='nw',image=image_file )
image_file2 = tkinter.PhotoImage(file = 'C:\\Users\\Lenovo\\Desktop\\素材\\下载.gif')
image2 = can1.create_image(200,125,anchor='w',image=image_file2 )
can1.pack()
# 密码和账户的label
list1 = tkinter.Label(window,text = '用户名:',font = 20).place(x=50,y = 150)
list2 = tkinter.Label(window,text = '密码:',font = 20).place(x=50,y = 200)
# 输入框
text1 = tkinter.Entry(window,font = 20)
text1.place(x=150,y = 150)
text2 = tkinter.Entry(window,font = 20)
text2.place(x=150,y = 200)
# 按钮
b1 = tkinter.Button(window,text='登陆',width = 15,command= denglu).place(x= 100,y =270)

b2 = tkinter.Button(window,text='注册',width = 15,command=zhuce1).place(x= 250,y =270)



buttom = tkinter.Button(window,text = 'quit',width = 15,command= quit)
buttom.place(x= 300,y = 300)
window.mainloop()

语言可能不太友好，就这样 真开心。