Update app.py

app.py

@@ -20,6 +20,7 @@ import cv2
 import torch
 import numpy as np
 from numpy import random
+from . import models
 from models.experimental import attempt_load
 from utils.datasets import LoadStreams, LoadImages
 from utils.general import check_img_size, check_requirements, check_imshow, non_max_suppression, apply_classifier,scale_coords, xyxy2xywh, strip_optimizer, set_logging, increment_path