Attribute error

[sayonpalit]

(myenv) Sayons-MacBook-Air:Affekta-master sayonpalit$ python affekta.py
Traceback (most recent call last):
File "affekta.py", line 5, in
face_classifier = cv2.createFisherFaceRecognizer()
AttributeError: module 'cv2.cv2' has no attribute 'createFisherFaceRecognizer'