Blob Storage — Python SDK Quick Reference

Condensed from azure-storage-blob-py. Full patterns (SAS tokens, async client, performance tuning, blob properties/metadata) in the azure-storage-blob-py plugin skill if installed.

Install

pip install azure-storage-blob azure-identity

Quick Start

from azure.storage.blob import BlobServiceClient
from azure.identity import DefaultAzureCredential
blob_service_client = BlobServiceClient("https://<account>.blob.core.windows.net", DefaultAzureCredential())

Best Practices

• Use DefaultAzureCredential for local development only — in production, use ManagedIdentityCredential. See auth-best-practices.md
• Use context managers for async clients
• Set overwrite=True explicitly when re-uploading
• Use max_concurrency for large file transfers
• Prefer readinto() over readall() for memory efficiency
• Use walk_blobs() for hierarchical listing
• Set appropriate content types for web-served blobs