def _AreTheSameSize(images):
  """Returns whether a set of images are the size size.

  Args:
    images: a list of images to compare.

  Returns:
    boolean.

  Raises:
    Exception: One image or fewer is passed in.
  """
  if len(images) > 1:
    return all(images[0].size == img.size for img in images[1:])
  else:
    raise Exception('No images passed in.')