新手，试了好几个下单函数，但是发生错误，怎么解决

max_stock = 159915.SZ order_percent(max_stock, 1, ContextInfo,'test')

159915是创业板ETF。我用的是策略回测

【2025-06-12 17:47:09.443】 start back test mode 【2025-06-12 17:47:09.443】 0E:\QMT\国金证券QMT交易端\python\新建策略文件.py_SH51030011ArgumentError:Python argument types in main.order_percent(float, int, Boost.Python.class, str) did not match C++ signature: order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, int) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class boost::python::api::object) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, int) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, int) 【2025-06-12 17:47:09.444】 Traceback (most recent call last):

File "<string>", line 49, in handlebar

Boost.Python.ArgumentError: Python argument types in main.order_percent(float, int, Boost.Python.class, str) did not match C++ signature: order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, int) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class boost::python::api::object) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, int) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >) order_percent(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, double, class boost::python::api::object, class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >, int)

max_stock = 159915.SZ，变量应该是字符串，你检查一下