Azure Blob 使用 Python

Question

I am accessing a website that allows me to download CSV file. I would like to store the CSV file directly to the blob container. I know that one way is to download the file locally and then upload the file, but I would like to skip the step of downloading the file locally. Is there a way in which I could achieve this.

i tried the following:

block_blob_service.create_blob_from_path('containername','blobname','https://*****.blob.core.windows.net/containername/FlightStats',content_settings=ContentSettings(content_type='application/CSV'))

but I keep getting errors stating path is not found. Any help is appreciated. Thanks!

Answer 1

The file_path in create_blob_from_path is the path of your local file, looks like "C:\xxx\xxx". This path( 'https://*****.blob.core.windows.net/containername/FlightStats' ) is Blob URL.

You could download your file to byte array or stream, then use create_blob_from_bytes or create_blob_from_stream method.

Answer 2

Other answer uses the so called "Azure SDK for Python legacy ".

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I recommend that if it's fresh implementation then use Gen2 Storage Account (instead of Gen1 or Blob storage).

For Gen2 storage account, see example here :

from azure.storage.filedatalake import DataLakeFileClient

data = b"abc"
file = DataLakeFileClient.from_connection_string("my_connection_string",
                                                 file_system_name="myfilesystem", file_path="myfile")

file.append_data(data, offset=0, length=len(data))
file.flush_data(len(data))

It's painful, if you're appending multiple times then you'll have to keep track of offset on client side.