Update add_student.py

ui/add_student.py

@@ -511,7 +511,32 @@ def main():
     # 创建用户界面
     tui = StudentTUI(bll)
     tui.run()
+def fun(self):
+    """运行UI"""
+    while True:
+        self.display_menu()
+        choice = input("请选择操作: ").strip()
+        if choice == '1':
+            self.add_student()
+        elif choice == '2':
+            self.delete_student()
+
+        elif choice == '3':
+            self.update_student()
 
+        elif choice == '5':
+            self.show_stats()
+        elif choice == '6':
+            self.import_export_data()
+        elif choice == '7':
+            self.clear_students()
+        elif choice == '8':
+            self.query_student()
+        elif choice == '4':
+            print("感谢使用学生信息管理系统！")
+            break
+        else:
+            print("无效的选择，请重新输入！")
 
 if __name__ == "__main__":
     main()