How to add a header key:value pair when publishing a message with pika

Question

I am writing an automated test to test a consumer. So far I did not need to include a header when publishing messages but now I do. And it seems like its lacking documentati

Answer 1

You would use pika.BasicProperties to add headers.

channel.basic_publish(exchange=self.exchange,
                      routing_key=self.routing_key,
                      properties=pika.BasicProperties(
                          headers={'key': 'value'} # Add a key/value header
                      ),
                      body=message)

The official documentation for pika does indeed not cover this scenario exactly, but the documentation does have the specifications listed. I would would strongly recommend that you bookmark this page, if you are going to continue using pika.