message: Updated comment and added spaces
diff: @@ -233,7 +233,7 @@ class Conv(Layer):
  # Check if output shapes are valid
  # They must not have 0 entries along any dimension
  - # Check if first or last dimension is number of channels
  + # Check dimensions other than batch and channel, must be greater than 0
  if self._channels_first:
  for idx, dimension in enumerate(input_shape.as_list()[2:]):
  self._check_invalid_dimension(dimension, idx)
  