In Python DevOps, consuming message queues is a vital process for handling asynchronous communication between different services. Commonly used message queues include RabbitMQ, Apache Kafka, and AWS SQS. Below is an example using the `pika` library to consume messages from a RabbitMQ queue.
import pika
# Connect to RabbitMQ server
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()
# Declare a queue (it must be declared in the same way as the producer)
channel.queue_declare(queue='hello')
# Callback function to process messages
def callback(ch, method, properties, body):
print(f"Received {body}")
# Start consuming messages
channel.basic_consume(queue='hello', on_message_callback=callback, auto_ack=True)
print('Waiting for messages. To exit press CTRL+C')
channel.start_consuming()
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