Keras: TypeError: float() argument must be a string or a number error at generator_output = next(output_generator)

[glaucomunsberg]

I'm using ImageDataGenerator(rescale=0).flow_from_directory, Keras-2.0.6 and doing a finetuning in Imagenet without modifications. But the message is always StopIteration without any other information.

` File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 754, in run
self.__target(self.__args, *self.__kwargs)
File "/home/glauco/.local/lib/python2.7/site-packages/keras/utils/data_utils.py", line 568, in data_generator_task
generator_output = next(self._generator)
File "/home/glauco/.local/lib/python2.7/site-packages/keras/preprocessing/image.py", line 1034, in next
x = img_to_array(img, data_format=self.data_format)
File "/home/glauco/.local/lib/python2.7/site-packages/keras/preprocessing/image.py", line 290, in img_to_array
x = np.asarray(img, dtype=K.floatx())
File "/home/glauco/.local/lib/python2.7/site-packages/numpy/core/numeric.py", line 531, in asarray
return array(a, dtype, copy=False, order=order)
TypeError: float() argument must be a string or a number'

[glaucomunsberg]

Hi @fchollet when the function load_img return a uncompleted image the x = np.asarray(img, dtype=K.floatx()) in function img_to_array broken.
https://github.com/fchollet/keras/blob/5e61e79ec59a098636b4fe87b1e67790b5c0b683/keras/preprocessing/image.py#L333

Images like that broke the execution, but not explicit the error. The image is not complete and generate the error. Send the original file of image there
7060201795_f182bd10a2_b-224x224_resized.jpeg.zip

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