Failed to interpret det1.npy as a pickle while running ``align_dataset_mtcnn.py``

I got the following error while following the guide to validate facenet on LFW：

Traceback (most recent call last):
  File "src/align/align_dataset_mtcnn.py", line 143, in <module>
    main(parse_arguments(sys.argv[1:]))
  File "src/align/align_dataset_mtcnn.py", line 55, in main
    pnet, rnet, onet = align.detect_face.create_mtcnn(sess, None)
  File "/Users/tomheaven/Documents/facenet/build/lib/src/align/detect_face.py", line 283, in create_mtcnn
    pnet.load(os.path.join(model_path, 'det1.npy'), sess)
  File "/Users/tomheaven/Documents/facenet/build/lib/src/align/detect_face.py", line 85, in load
    data_dict = np.load(data_path, encoding='latin1').item() #pylint: disable=no-member
  File "/Library/Python/2.7/site-packages/numpy/lib/npyio.py", line 429, in load
    "Failed to interpret file %s as a pickle" % repr(file))
IOError: Failed to interpret file '/Users/tomheaven/Documents/facenet/build/lib/src/align/det1.npy' as a pickle

I’m using python 2.7.10 on Mac OS X 10.12. I also load det1.npy manually with

import numpy as np
np.load('det1.npy')

but still failed.

[vantuan5644]

You need to modify a little bit in numpy lib.

Look inside your env’s site-packages directory: …/site-packages/numpy/lib/npio.py

In line 292: def load(file, mmap_mode=None, allow_pickle=False, fix_imports=True, …)

Change allow_pickle attribute from False to True and everything gonna work again.

[Shmarkus]

The correct solution here would be to fix the src not the numpy lib (which most probably will be overwritten when you upgrade numpy version) I’ll post a pull request later on but for the impatient (facenet/src/align/detect_face.py, line 85):

data_dict = np.load(data_path, encoding='latin1', allow_pickle=True).item() #pylint: disable=no-member