When retrieving blobs : DeserializationError: Unable to deserialize to object: type, KeyError: 'name'

[tappoz]

• Package Name: azure-storage-blob
• Package Version: 12.7.0
• Operating System: Linux Ubuntu 20.04.1 LTS
• Python Version: 3.6

Describe the bug

When using msrest-0.6.10 I am not able to retrieve blobs because an exception is being thrown by the library: DeserializationError: Unable to deserialize to object: type, KeyError: 'name'.

To Reproduce
Steps to reproduce the behavior:

Using ipython:

In [1]: from azure.storage.blob import BlobServiceClient, BlobClient                                                                                       

In [2]: ASA_CONNECTION_STRING = "DefaultEndpointsProtocol=https;BlobEndpoint=https://<<SOMETHING>>.blob.core.windows.net/;AccountName=<<SOMETHING>>;AccountKey=<<SOMETHING_ELSE>>"                                              

In [3]: ASA_CONTAINER_NAME = "<<SOME_NAME>>"                                                                                            

In [4]: blob = BlobServiceClient.from_connection_string(ASA_CONNECTION_STRING)                                                                             

In [5]: container = blob.get_container_client(ASA_CONTAINER_NAME)                                                                                          

In [6]: stuff = container.list_blobs()

In [7]: thing = stuff.next()

Expected behavior

That thing above should contain the details of the blob.

Additional context

For some reason if I uninstall all the pip packages containing the string "azure" with this:

for i in `pip list | awk '/azure/ {print $1}'`; do pip uninstall -y $i ; done

Then I remove this msrest package (version msrest-0.6.10) with:

pip uninstall msrest

Then I install again this package azure-storage-blob with:

pip install azure-storage-blob --upgrade

Then the code snippet above to retrieve a blob works.

The interesting fact is that this msrest is re-installed with the version msrest-0.6.19.
There must be something wrong with msrest-0.6.10 that is not captured by the requirements for azure-storage-blob.

[tasherif-msft]

Hi @tappoz,

We recently migrated our generated code layer to use a new version (of autorest). It appears this problem is due to an outdated minimum dependency!
msrest minimum dependency has now been updated to 0.6.18 to use Blobs/Fileshares/Queues/Datalake.
I will put out a PR to update this dependency :)
Thanks for catching this

[tasherif-msft]

I have created a PR here #16267. We will be patch releasing to resolve this issue. Let me know if anything else is needed :)

[tasherif-msft]

@tappoz the patch has been released.

[NebulusIO]

I'm running into a conflict after running both

pip install msrest==0.6.18
pip install msrest==0.6.21

i'm getting
Installing collected packages: msrest Attempting uninstall: msrest Found existing installation: msrest 0.6.10 Uninstalling msrest-0.6.10: Successfully uninstalled msrest-0.6.10 ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts. botframework-connector 4.14.0 requires msrest==0.6.10, but you have msrest 0.6.21 which is incompatible. botbuilder-schema 4.14.0 requires msrest==0.6.10, but you have msrest 0.6.21 which is incompatible. Successfully installed msrest-0.6.21