[root@localhost examples]# python facerec_from_video_file.py

RuntimeError: module compiled against API version 0xa but this version of numpy is 0x7

Traceback (most recent call last):

  File "facerec_from_video_file.py", line , in <module>

    import cv2

  File "/usr/lib64/python2.7/site-packages/cv2/__init__.py", line , in <module>

    from .cv2 import *

ImportError: numpy.core.multiarray failed to import

pip install --upgrade --force-reinstall numpy