diff --git a/_demo/cgofull/cgofull.go b/_demo/cgofull/cgofull.go
index 82c5e0f6..038c9ef4 100644
--- a/_demo/cgofull/cgofull.go
+++ b/_demo/cgofull/cgofull.go
@@ -6,7 +6,9 @@ package main
 #cgo windows,amd64 CFLAGS: -D_WIN64
 #cgo linux,amd64 CFLAGS: -D_LINUX64
 #cgo !windows,amd64 CFLAGS: -D_UNIX64
+#cgo pkg-config: python3-embed
 #include <stdio.h>
+#include <Python.h>
 #include "foo.h"
 typedef struct {
 	int a;
@@ -71,9 +73,18 @@ static void test_macros() {
 	printf("UNIX64 is defined\n");
 #endif
 }
+
+#define MY_VERSION "1.0.0"
+#define MY_CODE 0x12345678
 */
 import "C"
-import "fmt"
+import (
+	"fmt"
+	"unsafe"
+
+	"github.com/goplus/llgo/_demo/cgofull/pymod1"
+	"github.com/goplus/llgo/_demo/cgofull/pymod2"
+)
 
 func main() {
 	runPy()
@@ -86,10 +97,14 @@ func main() {
 	if r != 35 {
 		panic("test_structs failed")
 	}
+	fmt.Println(C.MY_VERSION)
+	fmt.Println(int(C.MY_CODE))
 }
 
 func runPy() {
 	Initialize()
 	defer Finalize()
 	Run("print('Hello, Python!')")
+	C.PyObject_Print((*C.PyObject)(unsafe.Pointer(pymod1.Float(1.23))), C.stderr, 0)
+	C.PyObject_Print((*C.PyObject)(unsafe.Pointer(pymod2.Long(123))), C.stdout, 0)
 }
diff --git a/_demo/cgofull/pymod1/pymod1.go b/_demo/cgofull/pymod1/pymod1.go
new file mode 100644
index 00000000..480b1b4a
--- /dev/null
+++ b/_demo/cgofull/pymod1/pymod1.go
@@ -0,0 +1,11 @@
+package pymod1
+
+/*
+#cgo pkg-config: python3-embed
+#include <Python.h>
+*/
+import "C"
+
+func Float(f float64) *C.PyObject {
+	return C.PyFloat_FromDouble(C.double(f))
+}
diff --git a/_demo/cgofull/pymod2/pymod2.go b/_demo/cgofull/pymod2/pymod2.go
new file mode 100644
index 00000000..8cc7dd27
--- /dev/null
+++ b/_demo/cgofull/pymod2/pymod2.go
@@ -0,0 +1,11 @@
+package pymod2
+
+/*
+#cgo pkg-config: python3-embed
+#include <Python.h>
+*/
+import "C"
+
+func Long(l int64) *C.PyObject {
+	return C.PyLong_FromLongLong(C.longlong(l))
+}