--- a/src/Base/swigpyrun.cpp

+++ b/src/Base/swigpyrun.cpp

@@ -35,6 +35,16 @@

 # pragma GCC diagnostic ignored "-Wcast-function-type"

 # endif

 #endif

+

+/* Temporary workaround for PyInterpreterState being made private in Python

+ * 3.8.

+#if PY_VERSION_HEX >= 0x03080000

+# define Py_BUILD_CORE

+#  include "internal/pycore_pystate.h"

+# undef Py_BUILD_CORE

+#endif

+*/

+

 namespace Swig_python {

 #define SWIG_PYTHON_NO_BUILD_NONE

 #include <swigpyrun.h>

--- a/src/Base/swigpyrun.inl

+++ b/src/Base/swigpyrun.inl

@@ -72,7 +72,7 @@ void cleanupSWIG_T(const char* TypeName)

     PyObject *module, *dict;

     PyInterpreterState *interp = PyThreadState_GET()->interp;

-    PyObject *modules = interp->modules;

+    PyObject *modules = PyImport_GetModuleDict();

     module = PyDict_GetItemString(modules, "__builtin__");

     if (module != NULL && PyModule_Check(module)) {

         dict = PyModule_GetDict(module);