Since the new update of azure-storage-blob, the blockblobservice is depreciated
How can I check that a blob exist ?
This answer is not working with the new version of azure-storage-blob Faster Azure blob name search with python?
I found this issue on GitHub : https://github.com/Azure/azure-sdk-for-python/issues/12744
Version 12.5.0 released on 2020-09-10 has now the exists method in the new SDK.
For example,
Sync:
from azure.storage.blob import BlobClient
blob = BlobClient.from_connection_string(conn_str="my_connection_string", container_name="mycontainer", blob_name="myblob")
exists = blob.exists()
print(exists)
Async:
import asyncio
async def check():
from azure.storage.blob.aio import BlobClient
blob = BlobClient.from_connection_string(conn_str="my_connection_string", container_name="mycontainer", blob_name="myblob")
async with blob:
exists = await blob.exists()
print(exists)
from azure.storage.blob import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(connection_string)
all_containers = blob_service_client.list_containers()
print([container['name'] for container in all_containers])
The above piece of code will list all the containers from where we can just check the existence of a container. But please note that the output is paged so in case you have a large number of containers, you need to iterate through the output using the continuation token. Please refer for more info: https://github.com/Azure/azure-storage-python/blob/54e60c8c029f41d2573233a70021c4abf77ce67c/azure-storage-blob/azure/storage/blob/baseblobservice.py#L573
as the @krshg suggested the easiest way to check the existance of the blob file is
from azure.storage.blob import BlobClient
conn_str = "my_connection_string"
my_blob_name = "my_dir/my_blob"
blob = BlobClient.from_connection_string(conn_str=conn_str, container_name="mycontainer", blob_name=my_blob_name )
exists = blob.exists()
print(exists)
Howeverm, I have a smal problem to acquire the connection string. I am using the Azure Storage Explrer. If you too do so you can get the connection string by clicking on the storage and on the butum-left panel get the cconnection string :
Another thing is that if inside the container there is a directory that contain s your blob file you can easily use the path format to your file
