Hello @Lucia Casucci ,
I was able to repro the same issue locally but after running pip install azure-storage --upgrade error is gone.
Can you kindly try out from your end ?
I just tried only sample piece of Import code for which same error was thrown , but after --upgrade it went through successfully.
from azure.storage import blob
from azure.storage.blob import AppendBlobService
Regards,
Shiva.