Check how many trackers are selected I'm writing a script for scaling in the movie clip editor. I need a way to check if there are two trackers selected, or if there are not. Is there something in the API to check how many trackers are in the bundle?
import bpy

context = bpy.context

# choose from data
tracks = bpy.data.movieclips["clip_name"].tracking.objects

# choose from context
tracks = context.scene.active_clip.tracking.objects 

# selected camera tracks
selected_camera_tracks = [t for t in tracks['Camera'].tracks if t.select]

# selected object_tracks
selected_object_tracks = [t for t in tracks['Object'].tracks if t.select]

# toggle selected object tracks
for t in tracks['Object'].tracks:
    t.select = not t.select