Redis is single-threaded. Always has been, probably always will be. You shouldn't need to use a transaction if you're doing a single command: SET HSET, GET, etc. Transactions are useful for multiple commands that need to all succeed.

What file encoding are you using? Is your editor adding anything to the end of the file when you're saving?

that could very well be the issue. You can see what is available in the REPL by doing import kafka dir(kafka)

@fanooos That most likely means that the kafka package isn't installed correctly on the machine. How did you install it?

Which line are you getting the error on? If it's line 6, I would say that kafka isn't installed correctly on your machine. If it's line 12, try: producer = KafkaProducer(bootstrap_servers="Broker_list") The namespace is unnecessary as you've already directly imported it. If you want to keep the namespace, change line 6 to: import kafka