AttributeError: 'dict' object has no attribute 'iter'

• Package Name: azure-storage-file-datalake
• Package Version: 12.2.0
• Operating System: Linux
• Python Version: 3.5.2 (from HDInsight cluster with ESP)

Describe the bug When listing an Azure directory which doesn’t have proper permission, we get AttributeError. Traceback:

Traceback (most recent call last):
  File "azure.whl/azure/storage/filedatalake/_list_paths_helper.py", line 56, in _get_next_cb
  File "azure.whl/azure/storage/filedatalake/_generated/operations/_file_system_operations.py", line 442, in list_paths
azure.storage.filedatalake._generated.models._models_py3.StorageErrorException: (AuthorizationPermissionMismatch) This request is not authorized to perform this operation using this permission.
RequestId:e6038639-e01f-007e-5013-df0d71000000
Time:2020-12-31T01:21:21.9445915Z

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "test_client.py", line 18, in <module>
    for run_result in fs_client.get_paths(path='rtgasi/negotiation/hdfs_rfe_v1/results/205ba9c9-8cdb-4f77-887f-c561e2c8edc3', recursive=False):
  File "azure.whl/azure/core/paging.py", line 129, in __next__
  File "azure.whl/azure/core/paging.py", line 76, in __next__
  File "azure.whl/azure/storage/filedatalake/_list_paths_helper.py", line 58, in _get_next_cb
  File "azure.whl/azure/storage/filedatalake/_shared/response_handlers.py", line 94, in process_storage_error
AttributeError: 'dict' object has no attribute 'iter'

To Reproduce Steps to reproduce the behavior:

1. Just run the following code where some/path does not have the proper permission:

credential = identity.ClientSecretCredential('xx', 'xx', 'xx')
service_client = filedatalake.DataLakeServiceClient('https://xx.dfs.core.windows.net', credential=credential)
fs_client = service_client.get_file_system_client(file_system='xx')
for result in fs_client.get_paths(path='some/path', recursive=False):
  pass

Expected behavior Should raise StorageErrorException or other more relevant errors

From the look of the exception, we just need to remove .iter() part and it should work for both Python 2 and 3: https://github.com/Azure/azure-sdk-for-python/blob/d59d06d75131f4e5ac133bcfdc442c38416808ad/sdk/storage/azure-storage-file-datalake/azure/storage/filedatalake/_shared/response_handlers.py#L94

Screenshots If applicable, add screenshots to help explain your problem.

Additional context Add any other context about the problem here.

[prevostc]

My bad, I used a BlobClient with a Datalake container. In this case, the object returned was a dict and .iter() errored without showing me the actual content of the response. It’s fixed for me now, but you may want to check this case to help dump people like me 😄

[tasherif-msft]

Hi @prevostc, it is supported in Py3, you can call .iter() on elementtree objects which in this case it is. Could you please provide me a code sample of what you’re attempting to do and how that’s failing?