save project

my_app.py

 import tkinter
 import tkinter
+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
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()
     app_login.root.destroy()
@@ -7,11 +12,21 @@ def login_to_reg():    # 登录界面转注册界面
     app_reg.show()
     app_reg.show()
 
 
 def reg_to_login():   # 注册界面转登录界面
 def reg_to_login():   # 注册界面转登录界面
-    pass
+    app_reg.root.destroy()
+    global app_login
+    app_login = My_login()
+    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","请填写完整的用户资料")
+    elif name in users:
+        messagebox.showwarning("错误","用户名已经存在")
+    elif password1 != password2:
+        messagebox.showwarning("错误","两次密码不一致")
+    else:
+        users[name] = password1
 def login():    # 登录验证
 def login():    # 登录验证
     pass    
     pass