In Python data analysis, consuming message queues is essential for processing asynchronous data streams efficiently. Message queues, such as RabbitMQ or Kafka, allow different parts of your application to communicate asynchronously. Utilizing libraries such as `pika` for RabbitMQ or `kafka-python` for Kafka enables you to read and process messages in a reliable way.
Here's a basic example of how to consume messages from a RabbitMQ queue using Python:
import pika
# Establish connection to RabbitMQ server
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()
# Declare a queue
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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