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,mima1,mima2=app_reg.get_input()
+    if name=='' or mima1=="" or mima2=="":
+        messagebox.showwarning('错误','梅马仔')
+    elif name in users:
+        messagebox.showwarning('错误','已存在梅吗在')
+    elif mima1 != mima2:
+        messagebox.showwarning('错误','密码都不一样吃屎去啊')
+    else:
+        users[name] = mima1
+        ww=json.dumps(users)
+        with open('user.txt','w',encoding='utf-8') as f1:
+            f1.write(ww)
+            messagebox.showinfo('成功','可以了')
         
 def login():    # 登录验证
     pass    

user.txt

-{"admin": "123456"}
\ No newline at end of file
+{"admin": "123456", "999": "1"}
\ No newline at end of file