save project

my_app.py

 import tkinter
 import tkinter
 from tkinter import messagebox
 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
 def login_to_reg():    # 登录界面转注册界面
     app_login.root.destroy()
     app_login.root.destroy()
     global app_reg
     global app_reg
@@ -14,9 +18,18 @@ def reg_to_login():   # 注册界面转登录界面
 def register():     # 注册验证
 def register():     # 注册验证
     name,password1,password2=app_reg.get_input()
     name,password1,password2=app_reg.get_input()
     if name==""or password1==""or password2=="":
     if name==""or password1==""or password2=="":
-    messagebox.showwarning('请写完整')
-    print("用户",name,password1,password2)
-
+        messagebox.showwarning('警告','请写完整')
+    elif name in users:
+        messagebox.showwarning("错误","用户已存在")
+    else:
+        users[name]=password1
+        content=json.dump(users)
+        with open("user.txt","w",encoding="utf-8")as file:
+            file.write(content)
+        messagebox.showinfo('提示','成功')
+        reg_to_login()
+       
+    
 def login():    # 登录验证
 def login():    # 登录验证
     pass    
     pass