The binary encoding of an image, like PNG, is NOT UTF-8. I am getting errors trying to encode a PNG and serialize it to protobuf. Please see a copy of my stack overflow question below.
How do I do this in Python if I can only use UTF-8 but images are not UTF-8? 0down votefavorite <https://stackoverflow.com/questions/48193722/python-protobuf-encode-png#> I have a protobuf field of type bytes I am trying to do: b = open("apng.png", "rb").read() msg2.imagebinary = b msg2b = msg2.SerializeToString() However I get the error: ValueError: b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\xac\x00\x00\x00\xaa\x08\x06\x00\x00\x000h\xa4\xc5\x00\x00\x0c%iCCPICC Profile\x00\x00H\x89\x95\x97\x07TSI\x17\xc7\xe7\x95$$$\xb4@(RBo"M\xba\xf4\x1a@@\xaa`#$\x81\x84\x12C \xa8\xd8\xd1E\x05\xd7\x82\x88\x08VtU\xc4\xb6\x16@\x16\x15\xb1\x97E\xb0\xf7\x05\x11\x15e],\xd8P\xf9&\x05t\xdd\xaf\x9c\xef\x9e3\xef\xfd\xce}w\xee\xfc\xef\xbcys\xde\x00\xa0\x1a\xc3\x16\x89\xb2Q5\x00r\x84\xf9\xe2\xd8\xd0\x00\xe6\xc4\xe4\x14&\xe9\x11@\x00\n\xc8\xb0\xe9\xb39y"\xff\x98\x98H\x00m\xf8\xfew{w\x13FC\xbbf\'\xcd\xf5\xcf\xe7\xff\xd5\xd4\xb9\xbc<\x0e\x00H\x0c\xe44n\x1e\'\x07\xf2a\x00pW\x8eH\x9c\x0f\x00\xa1\x0f\xfaMg\xe4\x8b \x13\xa1J\xa0)\x86\x02!\x9bI9C\xce\xeeRN\x93s\xa4,&>6\x10r*\x00JT6[\x9c\x01\x80\x8aT\x17\xb3\x80\x93\x01\xf3\xa8,\x87\xec \xe4\n\x84\x90\x9b!\xfbp\xf8l.\xe4\xcf\x90G\xe7\xe4L\x87\xacj\x05\xd9*\xed\xbb<\x19\x7f\xcb\x996\x92\x93\xcd\xce\x18ay-2S\n\x12\xe4\x89\xb2\xd9\xb3\xfe\xcf\xe9\xf8\xdf\x96\x93-\x19\x1e\xc3\x146*_\x1c\x16+\xadY:oY\xd3#\xa4L\x85|^\x98\x16\x15\rY\x03\xf2u has type bytes, but isn't valid UTF-8 encoding. Non-UTF-8 strings must be converted to unicode objects before being added. EDIT: I have also tried: from PIL import Image i = Image.open(theimage) b = i.tobytes() msg2.imagebinary = b msg2b = msg2.SerializeToString() -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
