save project

my_app.py

 import tkinter
+from tkinter import messagebox
+import json
+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_red
-    app_red = My_register()
-    app_red.show()
+    global app_reg
+    app_reg = My_register()
+    app_reg.show()
 
 def reg_to_login():   # 注册界面转登录界面
-    app_red.root.destroy()
+    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=="":
+        showerror("错误","请填写完整的注册信息")
+    elif name in user:
+        showwarning("警告","该用户名已存在")
+    elif password1 != password2:
+        showwarning("警告","两次密码不一致")
+    else:
+        user[name] = password1
+        content = json.dumps(users)
+        with open("user.txt","w",encoding="utf-8") as file:
+            file.write(content)
+        #注册成功，跳转至登录页面
+        messagebox.showinfo("成功","注册成功")
+        reg_to_login()
 
 def login():    # 登录验证
     pass