auto save

my_app.py

 import tkinter
-
+from tkinter import messagebox
+import json
+with open("user.txt",'r',encoding='utf-8')as f:
+    info = f.read()
+    users = json.loads(info)
 def login_to_reg():    # 登录界面转注册界面
-    pass
+    app_login.root.destroy()
+    global app_reg
+    app_reg=My_register()
+    app_reg.show()
 
 def reg_to_login():   # 注册界面转登录界面
-    pass
+    app_reg.root.destroy()
+    global app_login
+    app_login=My_login()
+    app_login.show()
 
 def register():     # 注册验证
-    pass
+    name,password1,password2=app_reg.get_input()
+    if name=="" or password1=="" or password2=="":
+        messagebox.showwarning("错误","请填写完成的注册信息！")
+    elif name in users:
+        messagebox.showwarning("错误","用户名已存在！")
+    elif password1 !=password2:
+        messagebox.showwarning("错误","两次密码不一致！")
+    else:
+        users[name]=password1
+        messagebox.showwarning("恭喜","注册成功！")
+        txt=json.dumps(users)
+        with open("user.txt",'w',encoding='utf-8') as f:
+            f.write(txt)
+        reg_to_login()
 
 def login():    # 登录验证
-    pass    
+    name,password=app_login.get_input()
+    pwd=users.get(name)
+    if pwd==password:
+        messagebox.showinfo("成功","登陆成功！")
+    else:
+        messagebox.showwarning("错误","登陆失败！")    
 
 class My_login():       # 登录窗口
     def __init__(self):

user.txt

-{"admin": "123456"}
\ No newline at end of file
+{"admin": "123456", "111": "111", "123": "111", "1234": "111", "12344": "123", "11111": "111", "6666": "666", "222": "23"}
\ No newline at end of file