In [1]:

    

import numpy as np
from keras.models import Model
from keras.layers import Input
from keras.layers.core import Flatten
from keras import backend as K
import json
from collections import OrderedDict


    

    




Using TensorFlow backend.

In [2]:

    

def format_decimal(arr, places=6):
    return [round(x * 10**places) / 10**places for x in arr]


    

In [3]:

    

DATA = OrderedDict()


    

In [4]:

    

# throws exception for TF

data_in = [0, 0.2, 0.5, -0.1, 1, 2]
data_in_shape = (6,)
print('in:', data_in)
print('in shape:', data_in_shape)
print('out shape:', data_in_shape)
print('out:', data_in)

DATA['core.Flatten.0'] = {
    'input': {'data': data_in, 'shape': data_in_shape},
    'expected': {'data': data_in, 'shape': data_in_shape}
}


    

    




in: [0, 0.2, 0.5, -0.1, 1, 2]
in shape: (6,)
out shape: (6,)
out: [0, 0.2, 0.5, -0.1, 1, 2]

In [5]:

    

layer_0 = Input(shape=(3, 2))
layer_1 = Flatten()(layer_0)
model = Model(inputs=layer_0, outputs=layer_1)

data_in = [0, 0.2, 0.5, -0.1, 1, 2]
data_in_shape = (3, 2)
print('in:', data_in)
print('in shape:', data_in_shape)
arr_in = np.array(data_in, dtype='float32').reshape(data_in_shape)
result = model.predict(np.array([arr_in]))
arr_out = result[0]
data_out_shape = arr_out.shape
print('out shape:', data_out_shape)
data_out = format_decimal(arr_out.ravel().tolist())
print('out:', data_out)

DATA['core.Flatten.1'] = {
    'input': {'data': data_in, 'shape': data_in_shape},
    'expected': {'data': data_out, 'shape': data_out_shape}
}


    

    




in: [0, 0.2, 0.5, -0.1, 1, 2]
in shape: (3, 2)
out shape: (6,)
out: [0.0, 0.2, 0.5, -0.1, 1.0, 2.0]

In [6]:

    

layer_0 = Input(shape=(3, 2, 2))
layer_1 = Flatten()(layer_0)
model = Model(inputs=layer_0, outputs=layer_1)

data_in = [0, 0.2, 0.5, -0.1, 1, 2, 0, 0.2, 0.5, -0.1, 1, 2]
data_in_shape = (3, 2, 2)
print('in:', data_in)
print('in shape:', data_in_shape)
arr_in = np.array(data_in, dtype='float32').reshape(data_in_shape)
result = model.predict(np.array([arr_in]))
arr_out = result[0]
data_out_shape = arr_out.shape
print('out shape:', data_out_shape)
data_out = format_decimal(arr_out.ravel().tolist())
print('out:', data_out)

DATA['core.Flatten.2'] = {
    'input': {'data': data_in, 'shape': data_in_shape},
    'expected': {'data': data_out, 'shape': data_out_shape}
}


    

    




in: [0, 0.2, 0.5, -0.1, 1, 2, 0, 0.2, 0.5, -0.1, 1, 2]
in shape: (3, 2, 2)
out shape: (12,)
out: [0.0, 0.2, 0.5, -0.1, 1.0, 2.0, 0.0, 0.2, 0.5, -0.1, 1.0, 2.0]

In [7]:

    

import os

filename = '../../../test/data/layers/core/Flatten.json'
if not os.path.exists(os.path.dirname(filename)):
    os.makedirs(os.path.dirname(filename))
with open(filename, 'w') as f:
    json.dump(DATA, f)


    

In [8]:

    

print(json.dumps(DATA))


    

    




{"core.Flatten.0": {"input": {"data": [0, 0.2, 0.5, -0.1, 1, 2], "shape": [6]}, "expected": {"data": [0, 0.2, 0.5, -0.1, 1, 2], "shape": [6]}}, "core.Flatten.1": {"input": {"data": [0, 0.2, 0.5, -0.1, 1, 2], "shape": [3, 2]}, "expected": {"data": [0.0, 0.2, 0.5, -0.1, 1.0, 2.0], "shape": [6]}}, "core.Flatten.2": {"input": {"data": [0, 0.2, 0.5, -0.1, 1, 2, 0, 0.2, 0.5, -0.1, 1, 2], "shape": [3, 2, 2]}, "expected": {"data": [0.0, 0.2, 0.5, -0.1, 1.0, 2.0, 0.0, 0.2, 0.5, -0.1, 1.0, 2.0], "shape": [12]}}}

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