> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# atoti_storage_azure

Code to load CSV and Parquet files from Azure Blob Storage into Atoti tables.

Authentication is done with a [connection string](https://docs.microsoft.com/en-us/azure/storage/common/storage-configure-connection-string?toc=/azure/storage/blobs/toc.json#store-a-connection-string) that will be read from the `AZURE_CONNECTION_STRING` environment variable or, if it does not exist, from the file at `~/.azure/credentials` (`C:\\Users\\{USERNAME}\\.azure\\credentials` on Windows).

### Example

```pycon theme={"languages":{"custom":["/engine/python-sdk/0.9/languages/pycon.tmLanguage.json"]}}
>>> table = session.read_csv(
...     "https://atotipubliccsv.blob.core.windows.net/csv/city.csv",
...     keys={"city"},
...     table_name="City",
... )
>>> table.head().sort_index()
        value
city
London  200.0
Paris   100.0
```

* [Client side encryption](./atoti_storage_azure.client_side_encryption)