Wrong type hint for azure.storage.queue.QueueClient.from_connection_string() -> None

[ellieayla]

• Package Name: azure.storage.queue
• Package Version: 12.1.1
• Operating System: MacOS 10.15.4 (19E287)
• Python Version: 3.8.2

Describe the bug

This code implies that azure.storage.queue.QueueClient.from_connection_string() returns None:

azure-sdk-for-python/sdk/storage/azure-storage-queue/azure/storage/queue/_queue_client.py

Lines 155 to 161 in ab4f309

	def from_connection_string(
	cls, conn_str, # type: str
	queue_name, # type: str
	credential=None, # type: Any
	**kwargs # type: Any
	):
	# type: (...) -> None

In contrast, azure.storage.blob.BlobClient.from_connection_string() returns a BlobClient.

azure-sdk-for-python/sdk/storage/azure-storage-blob/azure/storage/blob/_blob_client.py

Lines 235 to 242 in ab4f309

	def from_connection_string(
	cls, conn_str, # type: str
	container_name, # type: str
	blob_name, # type: str
	snapshot=None, # type: Optional[str]
	credential=None, # type: Optional[Any]
	**kwargs # type: Any
	): # type: (...) -> BlobClient

To Reproduce
Steps to reproduce the behavior:

1. In editor (eg PyCharm):

a = azure.storage.queue.QueueClient.from_connection_string()
a.<TAB>

2. Observe unhelpful autocomplete.
3. Add a comment # type: QueueClient
4. Get useful autocomplete
5. Now get Expected type 'QueueClient', got 'None' instead complaint.

Expected behavior
Correct type declaration of QueueClient. Or, at the very least, not an incorrect & affirmative declared type of None.

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

[xiafu-msft]

Hi @alanjcastonguay

Thanks for catching this, we will log this as a bug and fix it later!