def msg_rcvd(channel, method, header, body):
    message = json.loads(body)
    
    #/(ctc.1) Print & acknowledge our order
    print message % "Received order %(ordernum)d for %(type)s."
    channel.basic_ack(delivery_tag=method.delivery_tag)
dataset/ETHPy150Open rabbitinaction/sourcecode/python/chapter-7/shovel_consumer.py/msg_rcvd/swapped operands of `%`