How to read the data from multiple blob files using python?

Question

I'm able to get the list of blobs. When reading the data from all the files using Bytes IO it works for 1st blob file but for rest other blob files it throws error that resource not found.

with BytesIO() as input_blob:

blob_client = container_client.get_blob_client(path.name)
                        
blob_client.download_blob().download_to_stream(input_blob)

input_blob.seek(0)

Answer 1

@Divya Sahu Thanks for posting your query on Microsoft Q&A.

You can achieve this by listing all blobs in a container and downloading them one by one.
Try the following sample code in Python and modify as per your requirement as needed.

from azure.storage.blob import BlobServiceClient
import io


def download_blob_to_stream(blob_service_client: BlobServiceClient, container_name, blob_name):
    blob_client = blob_service_client.get_blob_client(container=container_name, blob=blob_name)

 

    # readinto() downloads the blob contents to a stream and returns the number of bytes read
    stream = io.BytesIO()
    num_bytes = blob_client.download_blob().readinto(stream)
    print(f"Number of bytes: {num_bytes}")

 

connection_string = "<connection_string>"
blob_service_client = BlobServiceClient.from_connection_string(connection_string)

 

container_name = "<container_name>"
blobs = blob_service_client.get_container_client(container_name).list_blobs()

for blob in blobs:
    download_blob_to_stream(blob_service_client, container_name, blob)

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