constchar*PYBIND_ITEM_TEMPLATE=R"( {"%s", (PyCFunction)(void(*)(void))%s, METH_VARARGS | METH_KEYWORDS, "C++ interface function for %s in dygraph."},)";
// These operators will skip automatical code generatrion and
// These operators will skip automatical code generation and
// need to be handwritten in CUSTOM_HANDWRITE_OP_FUNC_FILE