Upload image to azure blob storage using python

问题

I have an image directory named images which contains image files as:

images
    --0001.png
    --0002.jpg
    --0003.png

Now I want to upload this directory to my azure blob storage with the same file structure. I looked at the sample code given here and here but:

1. Even after installing azure-blob-storage, there is no such thing as BlobService in that package.
2. Is there any place where it is clearly documented how to do this?

回答1:

Here is my sample code works fine for me.

import os
from azure.storage.blob import BlockBlobService

root_path = '<your root path>'
dir_name = 'images'
path = f"{root_path}/{dir_name}"
file_names = os.listdir(path)

account_name = '<your account name>'
account_key = '<your account key>'
container_name = '<your container name, such as `test` for me>'

block_blob_service = BlockBlobService(
    account_name=account_name,
    account_key=account_key
)

for file_name in file_names:
    blob_name = f"{dir_name}/{file_name}"
    file_path = f"{path}/{file_name}"
    block_blob_service.create_blob_from_path(container_name, blob_name, file_path)

The result as the figure below be screenshot from Azure Storage Explorer.

For more details about API references of Azure Storage SDK for Python, please refer to https://azure-storage.readthedocs.io/index.html.

---

Update: My used Python version is Python 3.7.4 on Windows, and the required package is azure-storage==0.36.0, you can find it from https://pypi.org/project/azure-storage/.

1. $ virtualenv test
2. $ cd test
3. $ Scripts\active
4. $ pip install azure-storage

Then, you can run my sample code via python upload_images.py in the current Python virtual environment.

回答2:

It's in the documentation you linked.

It's not BlobService it is BlobClient.

from azure.storage.blob import BlobClient

blob = BlobClient.from_connection_string("my_connection_string", container="mycontainer", blob="my_blob")

with open("./SampleSource.txt", "rb") as data:
    blob.upload_blob(data)

回答3:

Currently there are two versions of azure.storage.blob . If you create a Azure VM and process data there, you can end up with either one of them.

The older version requires (as pointed out by Adam Marczak):

from azure.storage.blob import BlobClient

blob = BlobClient.from_connection_string("my_connection_string", container="mycontainer", blob="my_blob")

with open("./SampleSource.txt", "rb") as data:
    blob.upload_blob(data)

while the newer:

from azure.storage.blob import BlockBlobService

blob_service = BlockBlobService(account_name, account_key)

blob_service.create_blob_from_path(
    container_name, blob_name ,  full_file_path )

回答4:

Apparently, neither create_blob_from_bytes nor BlockBlobService exists in the latest python SDK[1] which you get by default unless you are managing the versions of various packages.

I am assuming you might want to execute this as a standalone script. So you can authenticate using AzureCliCredential[2] and retrieve the necessary resource endpoints via the methods provided in the SDK.

Below code won't work in the Azure Functions.

    from azure.storage.blob import (
       BlobServiceClient,
       ContentSettings
    )

    storage_connection_string='DefaultEndpointsProtocol=https;AccountName=<STORAGE_ACCOUNT_NAME>;AccountKey=<ACCOUNT_KEY>;EndpointSuffix=core.windows.net'
    container_name =
    blob_service_client = BlobServiceClient.(
        conn_str=storage_connection_string
        )
    logging.debug(f'getting client for container : {container_name}')
    container_client = 
    blob_service_client.get_container_client(container=container_name)
    blob_client = container_client.get_blob_client(blob_name)
    if blob_client.exists():
        blob_client.delete_blob()
    blob_client =blob_service_client.get_blob_client(container=container_name, 
    blob=blob_name)
    try:
        with open(filename, "rb") as data:
             blob.upload(data)
        content_settings =ContentSettings(content_type='image/png')
        logging.debug(f'setting the content type : {content_settings}')
    except Exception as e:
        logging.error(str(e))

[1] https://docs.microsoft.com/en-us/python/api/azure-storage-blob/azure.storage.blob.blobserviceclient?view=azure-python

[2] https://docs.microsoft.com/en-us/python/api/azure-identity/azure.identity.azureclicredential?view=azure-python

来源：https://stackoverflow.com/questions/57816849/upload-image-to-azure-blob-storage-using-python