save project

my_app.py

 import tkinter
-
+from tkinter import messagebox
+with open("user.txt","r",encoding="utf-8") as f:
+    info=f.read()
+    print(info)
+    users = json.loads(info)
+    print(users)
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()
     global app_reg
@@ -8,13 +13,20 @@ def login_to_reg():    # 登录界面转注册界面
 def reg_to_login():   # 注册界面转登录界面
     app_reg.root.destroy()
     global app_login
-    app_login=My_register()
+    app_login=My_login()
     app_login.show()
 
 def register():     # 注册验证
     name,password1,password2=app_reg.get_input()
     if name=="" or password1=="" or password2=="":
-        print("请填写完整")
+        messagebox.showwarning("警告","请填写完整的注册信息")
+    elif name in usft:
+        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:
+        usft[name]=password1
+
 
 def login():    # 登录验证
     pass    

user.txt

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