"az storage blob download" errors with or without any options provided, NoneType error

This is autogenerated. Please review and update as needed.

Describe the bug

Command Name az storage blob download

Errors:

The command failed with an unexpected error. Here is the traceback:
'NoneType' object is not iterable
Traceback (most recent call last):
  File "/opt/az/lib/python3.6/site-packages/knack/cli.py", line 231, in invoke
    cmd_result = self.invocation.execute(args)
  File "/opt/az/lib/python3.6/site-packages/azure/cli/core/commands/__init__.py", line 556, in execute
    self.commands_loader.load_arguments(command)
  File "/opt/az/lib/python3.6/site-packages/azure/cli/core/__init__.py", line 518, in load_arguments
    loader.load_arguments(command)  # this adds entries to the argument registries
  File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/storage/__init__.py", line 31, in load_arguments
    load_arguments(self, command)
  File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/storage/_params.py", line 1839, in load_arguments
    help=sas_help.format(get_permission_help_string(t_file_system_permissions)),
  File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/storage/_validators.py", line 772, in get_permission_help_string
    return ' '.join(['({}){}'.format(x[0], x[1:]) for x in allowed_values])
TypeError: 'NoneType' object is not iterable

To Reproduce:

Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

• az storage blob download

Expected Behavior

File specified is downloaded

Environment Summary

Linux-5.10.102.1-microsoft-standard-WSL2-x86_64-with-debian-10.12, Debian GNU/Linux 10 (buster)
Python 3.6.10
Installer: DEB

azure-cli 2.32.0

Extensions:
storage-preview 0.8.2
account 0.2.3

Dependencies:
msal 1.16.0
azure-mgmt-resource 20.0.0

Additional Context

[jiasli]

Azure CLI installed using apt is at /opt/az/lib/python3.10/site-packages, but if you install packages with pip3, it will interfere with apt Azure CLI’s installation:

sudo apt install azure-cli
pip3 install azure-mgmt-resource
$ /opt/az/bin/python3 -m pip list -v
Package                                 Version   Location                                        Installer
--------------------------------------- --------- ----------------------------------------------- ---------
adal                                    1.2.7     /opt/az/lib/python3.10/site-packages            pip
antlr4-python3-runtime                  4.9.3     /opt/az/lib/python3.10/site-packages
applicationinsights                     0.11.9    /opt/az/lib/python3.10/site-packages            pip
argcomplete                             1.11.1    /opt/az/lib/python3.10/site-packages            pip
asn1crypto                              0.24.0    /opt/az/lib/python3.10/site-packages            pip
azure-appconfiguration                  1.1.1     /opt/az/lib/python3.10/site-packages            pip
azure-batch                             12.0.0    /opt/az/lib/python3.10/site-packages            pip
azure-cli                               2.38.0    /opt/az/lib/python3.10/site-packages
azure-cli-core                          2.38.0    /opt/az/lib/python3.10/site-packages
azure-cli-telemetry                     1.0.6     /opt/az/lib/python3.10/site-packages
azure-common                            1.1.28    /home/user2/.local/lib/python3.10/site-packages pip
azure-core                              1.24.2    /home/user2/.local/lib/python3.10/site-packages pip
...

We recommend installing with only one method - either apt or pip. If you have to install twice with 2 tools, you may install Azure CLI with pip in a virtual environment. You may see https://github.com/Azure/azure-cli/issues/20476#issuecomment-1007131837 for detailed instruction.

[GavBurke]

Actually, then even “az storage blob” gives an error, if it helps narrow down the issue… az storage blob.txt

I’ve tried restarting my Docker Desktop now, even restarting my laptop, and the “az storage blob” command is again now completely broke in my devcontainer.