【解决错误】ModuleNotFoundError：No module named cv2

报错：

Traceback (most recent call last):
  File "train.py", line 6, in <module>
    import options.options as option
  File "CVPR19/options/options.py", line 8, in <module>
    from utils import util
  File "CVPR19/utils/util.py", line 6, in <module>
    import cv2
ModuleNotFoundError: No module named 'cv2'

ModuleNotFoundError：No module named 'cv2'

解决方法： pip install opencv-python -i https://pypi.douban.com/simple

优点：-i后面换源有利于加快下载速度。