auto save

my_app.py

 import tkinter
 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
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()
     app_login.root.destroy()
     global app_reg
     global app_reg
@@ -13,7 +18,20 @@ def reg_to_login():   # 注册界面转登录界面
     app_login.show()
     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","填写")
+    elif name in users:
+        messagebox.showwarning("错误","用户名已经存在！")
+    elif password1 != password2:
+        messagebox.showwarning("错误","密码不一致！")
+    else:
+        users[name]=password1
+        content=json.dumps(users)
+        with open("user.txt","w",encoding="utf-8") as file:
+
+            messagebox.showinfo("成功","成功")
+            reg_to_login()
 
 
 def login():    # 登录验证
 def login():    # 登录验证
     pass    
     pass    

user.txt

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