save project

my_app.py

 import tkinter
-
+import json
+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
     app_login.root.destroy()
     global app_reg
@@ -15,11 +19,11 @@ def reg_to_login():   # 注册界面转登录界面
 def register():     # 注册验证
     name,password1,password2=app_reg.get_input()
     if name=="" or password1=="" or password2=="":
-        messagebox.showwing("警告","完整注册资料")
+        messagebox.showwarning("警告","完整注册资料")
     elif name in users:
-        messagebox.showwing("名字已存在")
+        messagebox.showwarning("警告","名字已存在")
     elif password1 != password2:
-        messagebox.showwing("错误，密码不一致")
+        messagebox.showwarning("错误","密码不一致")
     else:
         users[name]=password1
         c=json.dumps(users)