save project

my_app.py

@@ -29,7 +29,7 @@ def register():     # 注册验证
     else:
         zd[name] = mima1
         info2 = json.dumps(zd)
-        with open("user.txt","w",encoding = "utr-8") as f3:
+        with open("user.txt","w",encoding = "utf-8") as f3:
             f3.write(info2)
         messagebox.showinfo("提示","注册成功")
         reg_to_login()