auto save

my_app.py

 import tkinter
 import tkinter
-
+from tkinter import messagebox
+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
 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
 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
 def register():     # 注册验证
-    pass
+    name,password1,password2=app_reg.get_input()
+    if name="" or password1="" or password2="":
+        messagebox.showwarning("警告","请填写完整的注册信息")
+    elif name in users:
+        messagebox.showwarning("错误","用户名已被注册")
+    elif password1 != password2:
+        messagebox.showwarning("错误","两次密码不一致")
+    else:
+        users[name]=password1
+        content=json.dumps(users)
+        with open("user.txt","w",encoding="utf-8") as file:
+            file.write(content)
+        messagebox.showinfo("提示","注册成功")
+        app_login.show()
 
 
 def login():    # 登录验证
 def login():    # 登录验证
-    pass    
+    name,password=app_login.get_input()
+    pwd=users.get(name)
+    if pwd==password:
+        messagebox   
 
 
 class My_login():       # 登录窗口
 class My_login():       # 登录窗口
     def __init__(self):
     def __init__(self):

user.txt

-{"admin": "123456"}
\ No newline at end of file