I hope this is useful information for someone who has encountered this: If you upload an image via the blobstore that is, say, 1000x800 and then attempt to resize using the following:
img = images.Image(blob_key=str(blob_key)) img.resize(1000,1000) image_data = googimg.execute_transforms(output_encoding=images.JPEG) You will find that image_data is empty. I couldn't find this behavior documented anywhere so I assume it is a bug. The following hack can be used if a non-empty image_data is expected: if len(image_data) == 0: image_data = blobstore.BlobReader(blob_key).read() -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.