python convert_lambda.py
Using TensorFlow backend.
WARNING:root:Keras version 2.1.3 detected. Last version known to be fully compatible of Keras is 2.0.6 .
WARNING:root:TensorFlow version 1.5.0 detected. Last version known to be fully compatible is 1.2.1 .
_________________________________________________________________
Layer (type)                 Output Shape              Param #
=================================================================
input_1 (InputLayer)         (None, 256, 256, 3)       0
_________________________________________________________________
conv2d_1 (Conv2D)            (None, 256, 256, 6)       168
_________________________________________________________________
lambda_1 (Lambda)            (None, 256, 256, 6)       0
_________________________________________________________________
global_average_pooling2d_1 ( (None, 6)                 0
_________________________________________________________________
dense_1 (Dense)              (None, 10)                70
=================================================================
Total params: 238
Trainable params: 238
Non-trainable params: 0
_________________________________________________________________
2018-01-28 14:36:08.655769: I tensorflow/core/platform/cpu_feature_guard.cc:137] Your CPU supports instructions that this TensorFlow binary was not compiled to use: SSE4.2 AVX AVX2 FMA
Predicted output:
[[2.2457931e-02 6.9949612e-02 7.5551923e-03 1.3894017e-03 5.5143284e-03
  8.0036414e-01 1.4288375e-02 3.5746139e-04 5.4043387e-03 7.2719224e-02]]

Converting the model:
Traceback (most recent call last):
  File "convert_lambda.py", line 91, in <module>
    custom_conversion_functions={ "Lambda": convert_lambda })
  File "/usr/local/lib/python2.7/site-packages/coremltools/converters/keras/_keras_converter.py", line 722, in convert
    custom_conversion_functions=custom_conversion_functions)
  File "/usr/local/lib/python2.7/site-packages/coremltools/converters/keras/_keras_converter.py", line 527, in convertToSpec
    custom_conversion_functions=custom_conversion_functions)
  File "/usr/local/lib/python2.7/site-packages/coremltools/converters/keras/_keras2_converter.py", line 173, in _convert
    graph.build()
  File "/usr/local/lib/python2.7/site-packages/coremltools/converters/keras/_topology2.py", line 634, in build
    for node in layer.inbound_nodes:
AttributeError: 'InputLayer' object has no attribute 'inbound_nodes'