Fixed TrackView example Python script (#18522)

* Fixed TrackView example Python script
* Removed stash markers and applied feedback

Signed-off-by: Luis Sempé <[email protected]>

Assets/Editor/Scripts/TrackView/example.py

@@ -9,7 +9,23 @@
 This example script prints info of all TrackView sequences
 '''
 
-numTracks = trackview.get_num_sequences()
+import azlmbr.bus as bus
+import azlmbr.track_view as track_view
 
-for i in range(numTracks):
-    print(f"Sequence '{trackview.get_sequence_name(i)}':")
+test_sequence_name = 'Test Sequence 01'
+
+num_sequences = track_view.EditorLayerTrackViewRequestBus(bus.Broadcast, 'GetNumSequences')
+
+if num_sequences > 0:
+    print(f"Found {num_sequences} sequences")
+else:
+    track_view.EditorLayerTrackViewRequestBus(bus.Broadcast, 'NewSequence', test_sequence_name, 1)
+    print(f"Created new sequence {test_sequence_name}")
+
+num_sequences = track_view.EditorLayerTrackViewRequestBus(bus.Broadcast, 'GetNumSequences')
+print(f"Number of Sequences: {num_sequences}")
+
+for i in range(0, num_sequences):
+    returned_name = track_view.EditorLayerTrackViewRequestBus(bus.Broadcast, 'GetSequenceName', i)
+    time_range = track_view.EditorLayerTrackViewRequestBus(bus.Broadcast, 'GetSequenceTimeRange', returned_name)
+    print(f"Sequence {i}: {returned_name} | Start: {time_range.start} End: {time_range.end}")