Unable to send a dictionary to RabbitMQ (unhashable type: 'slice')

Question

I want to send a messge to RabbitMQ in a dictionary format:

import pika

# ....
my_msg = {}
my_msg["a"] = 1
my_msg["a"]["b"] = 2
channel.basic_publish(exchange="", routing_key="some_key", body=my_msg)

And an error I get:

TypeError: unhashable type: 'slice'

Note that I have plenty of my_msg and each of them has a few keys, so I need somehow to be able to send a list dictionaries to RabbitMQ.

How can I do that? Or are there other options?

score 8 · Accepted Answer · edited May 23 '17 at 12:33

8

You need to serialize your dictionaries into strings and send them over RabbitMQ.

edited May 23 '17 at 12:33

Community

answered Feb 04 '16 at 05:19

Konstantin

score 3 · Answer 2 · answered Feb 04 '16 at 05:16

3

According to the documentation, body should be a string.

You might try body=json.dumps(my_msg)

answered Feb 04 '16 at 05:16

Ben Graham

2 Answers2