run error on mac: TypeError: slice indices must be integers or None or have an __index__ method

[gclsoft]

/Users/apple/.virtualenvs/TensorFlow-Examples/bin/python /Applications/PyCharm.app/Contents/helpers/pydev/pydevconsole.py --mode=client --port=49624
import sys; print('Python %s on %s' % (sys.version, sys.platform))
sys.path.extend(['/Users/apple/PycharmProjects/face'])
PyDev console: starting.
Python 3.6.1 (v3.6.1:69c0db5050, Mar 21 2017, 01:21:04) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
runfile('/Users/apple/PycharmProjects/face/face_recognition/examples/porn/pornDect.py', wdir='/Users/apple/PycharmProjects/face/face_recognition/examples/porn')
WARNING:tensorflow:From /Users/apple/PycharmProjects/face/face_recognition/examples/porn/nnpcr.py:216: softmax_cross_entropy (from tensorflow.contrib.losses.python.losses.loss_ops) is deprecated and will be removed after 2016-12-30.
Instructions for updating:
Use tf.losses.softmax_cross_entropy instead. Note that the order of the logits and labels arguments has been changed.
WARNING:tensorflow:From /Users/apple/.virtualenvs/TensorFlow-Examples/lib/python3.6/site-packages/tensorflow/contrib/losses/python/losses/loss_ops.py:397: softmax_cross_entropy_with_logits (from tensorflow.python.ops.nn_ops) is deprecated and will be removed in a future version.
Instructions for updating:
Future major versions of TensorFlow will allow gradients to flow
into the labels input on backprop by default.
See @{tf.nn.softmax_cross_entropy_with_logits_v2}.
WARNING:tensorflow:From /Users/apple/.virtualenvs/TensorFlow-Examples/lib/python3.6/site-packages/tensorflow/contrib/losses/python/losses/loss_ops.py:398: compute_weighted_loss (from tensorflow.contrib.losses.python.losses.loss_ops) is deprecated and will be removed after 2016-12-30.
Instructions for updating:
Use tf.losses.compute_weighted_loss instead.
WARNING:tensorflow:From /Users/apple/.virtualenvs/TensorFlow-Examples/lib/python3.6/site-packages/tensorflow/contrib/losses/python/losses/loss_ops.py:146: add_arg_scope.<locals>.func_with_args (from tensorflow.contrib.losses.python.losses.loss_ops) is deprecated and will be removed after 2016-12-30.
Instructions for updating:
Use tf.losses.add_loss instead.
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_bundle/pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
  File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "/Users/apple/PycharmProjects/face/face_recognition/examples/porn/pornDect.py", line 5, in <module>
    predictions = model.predict(['obama.jpg', 'timg.jpeg', '1548594791210.jpg'])
  File "/Users/apple/PycharmProjects/face/face_recognition/examples/porn/nnpcr.py", line 290, in predict
    features = loadFeatures(files)
  File "/Users/apple/PycharmProjects/face/face_recognition/examples/porn/nnpcr.py", line 90, in loadFeatures
    img = img[diff / 2: diff / 2 + w, :]
TypeError: slice indices must be integers or None or have an __index__ method