rabbit python pub message

import pika

def publish_message(message):
    # Establish a connection to RabbitMQ server
    connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
    channel = connection.channel()

    # Declare a queue named 'hello'
    channel.queue_declare(queue='hello')

    # Publish the message to the 'hello' queue
    channel.basic_publish(exchange='', routing_key='hello', body=message)
    print(f" [x] Sent '{message}'")

    # Close the connection
    connection.close()

if __name__ == '__main__':
    message_to_publish = "Hello, RabbitMQ!"
    publish_message(message_to_publish)