Python：检查Azure队列存储是否存在

Question

I want to get queue storage and create if it not exist. For most similar scenario I was using exists() method but when I look at python documentation ( https://learn.microsoft.com/en-us/python/api/azure-storage-queue/azure.storage.queue.queueclient?view=azure-python ) I can not see any method that can solve this problem Here is my code:

def send_to_queue(CONN_STR, queue_name, mess):
    service_client = QueueServiceClient.from_connection_string(conn_str=CONN_STR)
    queue = service_client.get_queue_client(queue_name)
    if not queue.exists():
        queue.create_queue()
    queue.send_message(mess)

What can I use in my if statement to solve this?

Answer 1

You can use try except instead. As per the docs create_queue creates a new queue in the storage account. If a queue with the same name already exists, the operation fails with a ResourceExistsError .

from azure.core.exceptions import ResourceExistsError

def send_to_queue(CONN_STR, queue_name, mess):
    service_client = QueueServiceClient.from_connection_string(conn_str=CONN_STR)
    queue = service_client.get_queue_client(queue_name)
    try:
        queue.create_queue()
    except ResourceExistsError:
        # Resource exists
        pass