Azure Storage File Share client library for Python

Azure File Share storage offers fully managed file shares in the cloud that are accessible via the industry standard Server Message Block (SMB) protocol. Azure file shares can be mounted concurrently by cloud or on-premises deployments of Windows, Linux, and macOS. Additionally, Azure file shares can be cached on Windows Servers with Azure File Sync for fast access near where the data is being used.

Azure file shares can be used to:

Replace or supplement on-premises file servers
"Lift and shift" applications
Simplify cloud development with shared application settings, diagnostic share, and Dev/Test/Debug tools

Getting started

Prerequisites

Python 3.9 or later is required to use this package. For more details, please read our page on Azure SDK for Python version support policy.
You must have an Azure subscription and an Azure storage account to use this package.

Install the package

Install the Azure Storage File Share client library for Python with pip:

pip install azure-storage-file-share

Create a storage account

If you wish to create a new storage account, you can use the Azure Portal, Azure PowerShell, or Azure CLI:

# Create a new resource group to hold the storage account -
# if using an existing resource group, skip this step
az group create --name my-resource-group --location westus2

# Create the storage account
az storage account create -n my-storage-account-name -g my-resource-group

Create the client

The Azure Storage File Share client library for Python allows you to interact with four types of resources: the storage account itself, file shares, directories, and files. Interaction with these resources starts with an instance of a client. To create a client object, you will need the storage account's file service URL and a credential that allows you to access the storage account:

from azure.storage.fileshare import ShareServiceClient

service = ShareServiceClient(account_url="https://<my-storage-account-name>.file.core.windows.net/", credential=credential)

Looking up the account URL

You can find the storage account's file service URL using the Azure Portal, Azure PowerShell, or Azure CLI:

# Get the file service URL for the storage account
az storage account show -n my-storage-account-name -g my-resource-group --query "primaryEndpoints.file"

Types of credentials

The credential parameter may be provided in a number of different forms, depending on the type of authorization you wish to use:

To use a shared access signature (SAS) token, provide the token as a string. If your account URL includes the SAS token, omit the credential parameter. You can generate a SAS token from the Azure Portal under "Shared access signature" or use one of the generate_sas() functions to create a sas token for the storage account, share, or file:

from datetime import datetime, timedelta
from azure.storage.fileshare import ShareServiceClient, generate_account_sas, ResourceTypes, AccountSasPermissions

sas_token = generate_account_sas(
    account_name="<storage-account-name>",
    account_key="<account-access-key>",
    resource_types=ResourceTypes(service=True),
    permission=AccountSasPermissions(read=True),
    expiry=datetime.utcnow() + timedelta(hours=1)
)

share_service_client = ShareServiceClient(account_url="https://<my_account_name>.file.core.windows.net", credential=sas_token)

To use a storage account shared key (aka account key or access key), provide the key as a string. This can be found in the Azure Portal under the "Access Keys" section or by running the following Azure CLI command:

az storage account keys list -g MyResourceGroup -n MyStorageAccount

Use the key as the credential parameter to authenticate the client:
```
from azure.storage.fileshare import ShareServiceClient
service = ShareServiceClient(account_url="https://<my_account_name>.file.core.windows.net", credential="<account_access_key>")
```

Creating the client from a connection string

Depending on your use case and authorization method, you may prefer to initialize a client instance with a storage connection string instead of providing the account URL and credential separately. To do this, pass the storage connection string to the client's from_connection_string class method:

from azure.storage.fileshare import ShareServiceClient

connection_string = "DefaultEndpointsProtocol=https;AccountName=xxxx;AccountKey=xxxx;EndpointSuffix=core.windows.net"
service = ShareServiceClient.from_connection_string(conn_str=connection_string)

The connection string to your storage account can be found in the Azure Portal under the "Access Keys" section or by running the following CLI command:

az storage account show-connection-string -g MyResourceGroup -n MyStorageAccount

Key concepts

The following components make up the Azure File Share Service:

The storage account itself
A file share within the storage account
An optional hierarchy of directories within the file share
A file within the file share, which may be up to 1 TiB in size

The Azure Storage File Share client library for Python allows you to interact with each of these components through the use of a dedicated client object.

Async Clients

This library includes a complete async API supported on Python 3.5+. To use it, you must first install an async transport, such as aiohttp. See azure-core documentation for more information.

Async clients and credentials should be closed when they're no longer needed. These objects are async context managers and define async close methods.

Clients

Four different clients are provided to interact with the various components of the File Share Service:

ShareServiceClient - this client represents interaction with the Azure storage account itself, and allows you to acquire preconfigured client instances to access the file shares within. It provides operations to retrieve and configure the service properties as well as list, create, and delete shares within the account. To perform operations on a specific share, retrieve a client using the get_share_client method.
ShareClient - this client represents interaction with a specific file share (which need not exist yet), and allows you to acquire preconfigured client instances to access the directories and files within. It provides operations to create, delete, configure, or create snapshots of a share and includes operations to create and enumerate the contents of directories within it. To perform operations on a specific directory or file, retrieve a client using the get_directory_client or get_file_client methods.
ShareDirectoryClient - this client represents interaction with a specific directory (which need not exist yet). It provides operations to create, delete, or enumerate the contents of an immediate or nested subdirectory, and includes operations to create and delete files within it. For operations relating to a specific subdirectory or file, a client for that entity can also be retrieved using the get_subdirectory_client and get_file_client functions.
ShareFileClient - this client represents interaction with a specific file (which need not exist yet). It provides operations to upload, download, create, delete, and copy a file.

For details on path naming restrictions, see Naming and Referencing Shares, Directories, Files, and Metadata.

Examples

The following sections provide several code s

azure-storage-file-share

Description