Fix build with system python
+#include <Python.h>
+
#include "helpers.h"
#include <catboost/libs/helpers/exception.h>
#include <catboost/libs/helpers/interrupt.h>
#include <catboost/libs/data_types/groupid.h>
-#include <Python.h>
-
extern "C" PyObject* PyCatboostExceptionType;
void ProcessException() {
