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import bpy
import random
#for loopv in range (1000):
ctx = bpy.context.copy()
for area in bpy.context.screen.areas:
if area.type == 'CLIP_EDITOR':
ctx['area'] = area
bpy.ops.clip.select_all(ctx,action='DESELECT')
bpy.ops.clip.detect_features(ctx)
bpy.ops.clip.track_markers(ctx,backwards=False, sequence=False)