diff --git a/_examples/hi/test.py b/_examples/hi/test.py
index 7b15a2f..2e5a8a4 100644
--- a/_examples/hi/test.py
+++ b/_examples/hi/test.py
@@ -157,6 +157,7 @@ except Exception, err:
 arr[1] = 42
 print "arr:",arr
 print "len(arr):",len(arr)
+print "mem(arr):",len(memoryview(arr))
 
 print "--- testing slice..."
 s = hi.GetIntSlice()
@@ -173,4 +174,5 @@ except Exception, err:
 s[1] = 42
 print "slice:",s
 print "len(slice):",len(s)
+print "mem(slice):",len(memoryview(s))
 
diff --git a/main_test.go b/main_test.go
index d9173da..d47b22d 100644
--- a/main_test.go
+++ b/main_test.go
@@ -145,6 +145,7 @@ arr[1]: 2
 arr[2]: caught: array index out of range
 arr: [2]int{1, 42}
 len(arr): 2
+mem(arr): 2
 --- testing slice...
 slice: []int{1, 2}
 len(slice): 2
@@ -153,6 +154,7 @@ slice[1]: 2
 slice[2]: caught: array index out of range
 slice: []int{1, 42}
 len(slice): 2
+mem(slice): 2
 `)
 	buf := new(bytes.Buffer)
 	cmd = exec.Command("python2", "./test.py")