---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
/opt/conda/lib/python3.6/site-packages/PIL/Image.py in open(fp, mode)
   2480     try:
-> 2481         fp.seek(0)
   2482     except (AttributeError, io.UnsupportedOperation):

AttributeError: 'numpy.ndarray' object has no attribute 'seek'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
<ipython-input-30-365f59a42822> in <module>()
      1 ### TODO: Test the performance of the dog_detector function
      2 ### on the images in human_files_short and dog_files_short.
----> 3 dog_detector(human_files_short)

<ipython-input-29-17d0ec8d087c> in dog_detector(img_path)
      1 ### returns "True" if a dog is detected in the image stored at img_path
      2 def dog_detector(img_path):
----> 3     prediction = ResNet50_predict_labels(img_path)
      4     return ((prediction <= 268) & (prediction >= 151))

<ipython-input-28-4e0ccdc559f6> in ResNet50_predict_labels(img_path)
      3 def ResNet50_predict_labels(img_path):
      4     # returns prediction vector for image located at img_path
----> 5     img = preprocess_input(path_to_tensor(img_path))
      6     return np.argmax(ResNet50_model.predict(img))

<ipython-input-27-3693dbe72dab> in path_to_tensor(img_path)
      4 def path_to_tensor(img_path):
      5     # loads RGB image as PIL.Image.Image type
----> 6     img = image.load_img(img_path, target_size=(224, 224))
      7     # convert PIL.Image.Image type to 3D tensor with shape (224, 224, 3)
      8     x = image.img_to_array(img)

/opt/conda/lib/python3.6/site-packages/keras/preprocessing/image.py in load_img(path, grayscale, target_size, interpolation)
    345         raise ImportError('Could not import PIL.Image. '
    346                           'The use of `array_to_img` requires PIL.')
--> 347     img = pil_image.open(path)
    348     if grayscale:
    349         if img.mode != 'L':

/opt/conda/lib/python3.6/site-packages/PIL/Image.py in open(fp, mode)
   2481         fp.seek(0)
   2482     except (AttributeError, io.UnsupportedOperation):
-> 2483         fp = io.BytesIO(fp.read())
   2484         exclusive_fp = True
   2485

AttributeError: 'numpy.ndarray' object has no attribute 'read'