save project

my_app.py

 import tkinter
-
+from tkinter import messagebox
+import json
+with open("user.txt","r",encoding="utf.g")as f:
+    info = f.read()
+    user = json.loads(info)
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()
     global app_reg
@@ -7,13 +11,33 @@ def login_to_reg():    # 登录界面转注册界面
     app_reg.show()
 
 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
-    pass
-
+    name,password1,password2=app_reg.get_input()
+    if name =="" or password1=="" or password2=="":
+        messagebox.showwarning("警告","请填写完整的注册资料")
+    elif name in user:
+        messagebox.showwarning("错误","用户名已存在")
+    elif password1 != password2:
+        messagebox.showwarning("错误","两次密码不一样")
+    elif:
+        user[name]=password1
+        content =json.dumps(users)
+        with open("user.txt","w",encoding="utf-8")as file:
+            file.write(content)
+        messagebox.showwarning("成功","注册成功")
+        reg_to_login()
 def login():    # 登录验证
-    pass    
+    mame,password=app_login.get_input()
+    pwd=users.grt(name)
+    if pwd == password:
+        messagebox.showinfo("成功","登录成功")
+    else:
+        messagebox.showwarning("错误","用户名或密码错误")  
 
 class My_login():       # 登录窗口
     def __init__(self):