azure.storage.blob.ContainerClient() initializer does not support emulated blob storage from Azurite

[chrisyeh96]

• Package Name: azure-storage-blob
• Package Version: 12.3.2
• Operating System: Windows 10 Version 10.0.19041 Build 19041, running WSL 1
• Python Version: 3.8.3

Describe the bug
azure.storage.blob.ContainerClient() throws errors on emulated local blob storage.

To Reproduce
Steps to reproduce the behavior:

from azure.storage.blob import ContainerClient
ContainerClient(
    account_url='http://127.0.0.1:1000/devstoreaccount1',
    container_name='newcontainer',
    credential='Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==')

Running Code in Python REPL:

>>> from azure.storage.blob import ContainerClient
>>> ContainerClient(
...     account_url='http://127.0.0.1:1000/devstoreaccount1',
...     container_name='newcontainer',
...     credential='Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/cyeh/miniconda3/envs/env/lib/python3.8/site-packages/azure/storage/blob/_container_client.py", line 150, in __init__
    super(ContainerClient, self).__init__(parsed_url, service='blob', credential=credential, **kwargs)
  File "/home/cyeh/miniconda3/envs/env/lib/python3.8/site-packages/azure/storage/blob/_shared/base_client.py", line 90, in __init__
    self.credential = format_shared_key_credential(account, credential)
  File "/home/cyeh/miniconda3/envs/env/lib/python3.8/site-packages/azure/storage/blob/_shared/base_client.py", line 330, in format_shared_key_credential
    raise ValueError("Unable to determine account name for shared key credential.")
ValueError: Unable to determine account name for shared key credential.
>>>

Expected behavior

There should not be any error. Both Azurite and the Azure storage emulator assume the 'http://127.0.0.1:1000/devstoreaccount1' account URL, but it seems like the Azure Python SDK sadly does not support this.

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @xgithubtriage.

[kaerm]

cc: @jongio

[xiafu-msft]

Hi @chrisyeh96
The second commit in #12619 is to fix this problem.
Currently you can use this as a workaround to create a container client

credential={
    "account_name": "devstoreaccount1",
    "account_key": "youraccouantkey"
}