'injectFaultMean' doesn't work

[ElaineYao]

I got this following error. I noticed in the source code def injectFaultMean(a, b), there is a FIXME - This only works if we call np.mean on b[0]. Need to figure out why. I was wondering what this injection function wants to do and how to avoid this error, thanks.

UnknownError (see above for traceback): exceptions.IndexError: tuple index out of range
Traceback (most recent call last):

  File "/home/elaine/.conda/envs/tensorfi/lib/python2.7/site-packages/tensorflow/python/ops/script_ops.py", line 206, in __call__
    ret = func(*args)

  File "/home/elaine/pycharmProjects/TensorFI-master/TensorFI/injectFault.py", line 551, in injectFaultMean
    res = np.mean(a, b[0])

  File "/home/elaine/.conda/envs/tensorfi/lib/python2.7/site-packages/numpy/core/fromnumeric.py", line 2957, in mean
    out=out, **kwargs)

  File "/home/elaine/.conda/envs/tensorfi/lib/python2.7/site-packages/numpy/core/_methods.py", line 57, in _mean
    rcount = _count_reduce_items(arr, axis)

  File "/home/elaine/.conda/envs/tensorfi/lib/python2.7/site-packages/numpy/core/_methods.py", line 50, in _count_reduce_items
    items *= arr.shape[ax]

IndexError: tuple index out of range