Azure Blob - 使用 Python 读取
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Azure Blob - Read using Python
提问by AngiSen
Can someone tell me if it is possible to read a csv file directly from Azure blob storage as a stream and process it using Python? I know it can be done using C#.Net (shown below) but wanted to know the equivalent library in Python to do this.
有人能告诉我是否可以直接从 Azure blob 存储读取 csv 文件作为流并使用 Python 处理它吗？我知道它可以使用 C#.Net（如下所示）来完成，但想知道 Python 中的等效库来做到这一点。
CloudBlobClient client = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = client.GetContainerReference("outfiles");
CloudBlob blob = container.GetBlobReference("Test.csv");*
回答by Gaurav Mantri-AIS
Yes, it is certainly possible to do so. Check out Azure Storage SDK for Python
是的，当然可以这样做。查看Azure Storage SDK for Python
from azure.storage.blob import BlockBlobService
block_blob_service = BlockBlobService(account_name='myaccount', account_key='mykey')
block_blob_service.get_blob_to_path('mycontainer', 'myblockblob', 'out-sunset.png')
You can read the complete SDK documentation here: http://azure-storage.readthedocs.io.
您可以在此处阅读完整的 SDK 文档：http: //azure-storage.readthedocs.io。
回答by Sebastian Dziadzio
Here's a way to do it with the new version of the SDK(12.0.0):
以下是使用新版 SDK(12.0.0)执行此操作的方法：
from azure.storage.blob import BlobClient
blob = BlobClient(account_url="https://<account_name>.blob.core.windows.net"
container_name="<container_name>",
blob_name="<blob_name>",
credential="<account_key>")
with open("example.csv", "wb") as f:
data = blob.download_blob()
data.readinto(f)
See herefor details.
有关详细信息，请参见此处。
回答by Sunil Bisht
Provide Your Azure subscription Azure storage name and Secret Key as Account Key here
在此处提供您的 Azure 订阅 Azure 存储名称和密钥作为帐户密钥
block_blob_service = BlockBlobService(account_name='$$$$$$', account_key='$$$$$$')
This still get the blob and save in current location as 'output.jpg'
这仍然得到 blob 并在当前位置保存为“output.jpg”
block_blob_service.get_blob_to_path('you-container_name', 'your-blob', 'output.jpg')
This will get text/item from blob
这将从 blob 获取文本/项目
blob_item= block_blob_service.get_blob_to_bytes('your-container-name','blob-name')
blob_item.content
回答by Daniel R
One can stream from blob with python like this:
可以像这样使用 python 从 blob 中流式传输：
from tempfile import NamedTemporaryFile
from azure.storage.blob.blockblobservice import BlockBlobService
entry_path = conf['entry_path']
container_name = conf['container_name']
blob_service = BlockBlobService(
account_name=conf['account_name'],
account_key=conf['account_key'])
def get_file(filename):
local_file = NamedTemporaryFile()
blob_service.get_blob_to_stream(container_name, filename, stream=local_file,
max_connections=2)
local_file.seek(0)
return local_file
