1 files changed, 35 insertions, 0 deletions
diff --git a/py/objnone.c b/py/objnone.c
new file mode 100644
index 0000000000..f7b665e997
--- /dev/null
+++ b/py/objnone.c
@@ -0,0 +1,35 @@
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "nlr.h"
+#include "misc.h"
+#include "mpconfig.h"
+#include "obj.h"
+
+typedef struct _mp_obj_none_t {
+    mp_obj_base_t base;
+} mp_obj_none_t;
+
+void none_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in) {
+    print(env, "None");
+}
+
+const mp_obj_type_t none_type = {
+    { &mp_const_type },
+    "NoneType",
+    none_print, // print
+    NULL, // call_n
+    NULL, // unary_op
+    NULL, // binary_op
+    NULL, // getiter
+    NULL, // iternext
+    {{NULL, NULL},}, // method list
+};
+
+static const mp_obj_none_t none_obj = {{&none_type}};
+const mp_obj_t mp_const_none = (mp_obj_t)&none_obj;
+
+// the stop-iteration object just needs to be something unique
+// it's not the StopIteration exception
+static const mp_obj_none_t stop_it_obj = {{&none_type}};
+const mp_obj_t mp_const_stop_iteration = (mp_obj_t)&stop_it_obj;