ValueError: not enough values to unpack (expected 3, got 2)

[shqmffl486]

Lamp is assigned class label 0.
0%| | 0/1199 [00:00<?, ?it/s]
Traceback (most recent call last):
File "create_label_files.py", line 155, in
cv2.CHAIN_APPROX_SIMPLE)
ValueError: not enough values to unpack (expected 3, got 2)

how can i do? help me!

[Divyam10]

@shqmffl486
Change

  _,  contours, _ = cv2.findContours(thresh.copy(), cv2.RETR_EXTERNAL,
                                              cv2.CHAIN_APPROX_SIMPLE)

to

contours, _ = cv2.findContours(thresh.copy(), cv2.RETR_EXTERNAL,
                                              cv2.CHAIN_APPROX_SIMPLE)