StackRduino
diff --git a/‎py/sequence.c‎
Lines changed: 2 additions & 0 deletions b/‎py/sequence.c‎
Lines changed: 2 additions & 0 deletions
@@ -56,6 +56,8 @@ bool mp_seq_get_fast_slice_indexes(machine_uint_t len, mp_obj_t slice, machine_u
     machine_int_t start, stop;
     mp_obj_slice_get(slice, &ostart, &ostop, &ostep);
     if (ostep != mp_const_none && ostep != MP_OBJ_NEW_SMALL_INT(1)) {
+        nlr_raise(mp_obj_new_exception_msg(&mp_type_NotImplementedError,
+            "Only slices with step=1 (aka None) are supported"));
         return false;
     }
Original file line number	Diff line number	Diff line change
`@@ -56,6 +56,8 @@ bool mp_seq_get_fast_slice_indexes(machine_uint_t len, mp_obj_t slice, machine_u`
`56`	`56`	`machine_int_t start, stop;`
`57`	`57`	`mp_obj_slice_get(slice, &ostart, &ostop, &ostep);`
`58`	`58`	`if (ostep != mp_const_none && ostep != MP_OBJ_NEW_SMALL_INT(1)) {`
	`59`	`+ nlr_raise(mp_obj_new_exception_msg(&mp_type_NotImplementedError,`
	`60`	`+ "Only slices with step=1 (aka None) are supported"));`
`59`	`61`	`return false;`
`60`	`62`	`}`
`61`	`63`