auto save

my_app.py

@@ -25,9 +25,10 @@ def register():     # 注册验证
     else:
         users[name]=password1
         messagebox.showwarning("警告","账号注册成功")
-        app_reg.root.destroy()
-        app_login = My_login()
-        app_login.show()
+        with open ("user.txt","w",encoding="utf-8") as f:
+            f.write(json.dumps(users))
+        users=json.loads(info)
+
 def login():    # 登录验证
     pass