save project

my_app.py

 import tkinter
-
+from tkinter import messagebox
+import json
+with open("user.txt","r",encoding="utf-8")as file:
+    f=file.read()
+    user=json.loads(f) 
 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()
+    app_login = My_login()
+    app_login.show()
 
 def register():     # 注册验证
-    pass
+    name,pw1,pw2=app_reg.get_input()
+    if name==""or pw1=="" or pw2=="":
+        messagebox.showwarning("警告","不能为空！")
+    elif name in user:
+        messagebox.showwarning("警告","被注册！")
+    elif pw1!=pw2:
+        messagebox.showwarning("警告","密码不一致！")
+    else:
+        user[name]=pw1
+        messagebox.showinfo("提示","注册成功！")    
 
 def login():    # 登录验证
     pass