`az` crashes if the CWD includes a subdirectory named "brotli"

[roy-work]

Related command
Literally anything; we'll use az as the example, but az --help and anything more complicated also fails.

Describe the bug

# Set up an empty directory for this demonstration:
» mkdir az-bug
» cd az-bug
# Pretend you work in a large company, with a large repository, and your CWD happens to have a subdirectory in it,
# and it's name is…
» mkdir brotli
# Let's run az!
» az
Error loading command module 'acs': module 'brotli' has no attribute 'error'
Error loading command module 'appservice': module 'brotli' has no attribute 'error'
Error loading command module 'aro': module 'brotli' has no attribute 'error'
Error loading command module 'batch': module 'brotli' has no attribute 'error'
Error loading command module 'iot': module 'brotli' has no attribute 'error'
Error loading command module 'netappfiles': module 'brotli' has no attribute 'error'
Error loading command module 'network': module 'brotli' has no attribute 'error'
Error loading command module 'rdbms': module 'brotli' has no attribute 'error'
Error loading command module 'serviceconnector': module 'brotli' has no attribute 'error'
Error loading command module 'sqlvm': module 'brotli' has no attribute 'error'
Error loading command module 'vm': module 'brotli' has no attribute 'error'

     /\
    /  \    _____   _ _  ___ _
   / /\ \  |_  / | | | \'__/ _\
  / ____ \  / /| |_| | | |  __/
 /_/    \_\/___|\__,_|_|  \___|


Welcome to the cool new Azure CLI!

Use `az --version` to display the current version.
Here are the base commands:

Auto upgrade failed. name 'exit_code' is not defined
Traceback (most recent call last):
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/commands/command_operation.py", line 59, in get_op_handler
    handler = import_module(mod_to_import)
  File "/usr/local/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/command_modules/find/custom.py", line 12, in <module>
    import requests
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/requests/__init__.py", line 43, in <module>
    import urllib3
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/__init__.py", line 13, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/connectionpool.py", line 40, in <module>
    from .response import HTTPResponse
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/response.py", line 157, in <module>
    class HTTPResponse(io.IOBase):
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/response.py", line 390, in HTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/commands/__init__.py", line 575, in execute
    self.help.show_welcome(subparser)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/knack/help.py", line 722, in show_welcome
    help_file = self.group_help_cls(self, '', parser)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/knack/help.py", line 253, in __init__
    child.load(options)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/_help.py", line 296, in load
    loader.versioned_load(self, options)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/_help_loaders.py", line 154, in versioned_load
    super(CliHelpFile, help_obj).load(parser)  # pylint:disable=bad-super-call
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/knack/help.py", line 198, in load
    description = getattr(options, 'description', None)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/knack/parser.py", line 241, in __getattribute__
    self.description = self._description() \
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/commands/command_operation.py", line 133, in description_loader
    op = self.get_op_handler(self.op_path)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/commands/command_operation.py", line 66, in get_op_handler
    raise ValueError("The operation '{}' is invalid.".format(op_path))
ValueError: The operation 'azure.cli.command_modules.find.custom#process_query' is invalid.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/local/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/__main__.py", line 49, in <module>
    exit_code = cli_main(az_cli, sys.argv[1:])
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/__main__.py", line 36, in cli_main
    return cli.invoke(args)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/knack/cli.py", line 245, in invoke
    exit_code = self.exception_handler(ex)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/__init__.py", line 127, in exception_handler
    return handle_exception(ex)
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/azure/cli/core/util.py", line 59, in handle_exception
    from msrestazure.azure_exceptions import CloudError
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/msrestazure/__init__.py", line 28, in <module>
    from .azure_configuration import AzureConfiguration
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/msrestazure/azure_configuration.py", line 34, in <module>
    from msrest import Configuration
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/msrest/__init__.py", line 28, in <module>
    from .configuration import Configuration
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/msrest/configuration.py", line 37, in <module>
    from .pipeline import Pipeline
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/msrest/pipeline/__init__.py", line 52, in <module>
    from requests.structures import CaseInsensitiveDict
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/requests/__init__.py", line 43, in <module>
    import urllib3
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/__init__.py", line 13, in <module>
    from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/connectionpool.py", line 40, in <module>
    from .response import HTTPResponse
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/response.py", line 157, in <module>
    class HTTPResponse(io.IOBase):
  File "/usr/local/Cellar/azure-cli/2.42.0/libexec/lib/python3.10/site-packages/urllib3/response.py", line 390, in HTTPResponse
    DECODER_ERROR_CLASSES += (brotli.error,)
AttributeError: module 'brotli' has no attribute 'error'

To Reproduce
Run any az in any directory where there exists a subdirectory named "brotli".

Expected behavior
az doesn't crash.

Environment summary
macOs, installed via brew;

az --version

» az --version
azure-cli                         2.42.0

core                              2.42.0
telemetry                          1.0.8

Extensions:
databricks                         0.8.0
storage-preview                    0.8.3
ssh                                1.0.0
automation                         0.1.1

Dependencies:
msal                              1.20.0
azure-mgmt-resource             21.1.0b1

Python location '/usr/local/Cellar/azure-cli/2.42.0/libexec/bin/python'
Extensions directory '/Users/roy/.azure/cliextensions'

Python (Darwin) 3.10.8 (main, Oct 13 2022, 10:17:43) [Clang 14.0.0 (clang-1400.0.29.102)]

Legal docs and information: aka.ms/AzureCliLegal


Your CLI is up-to-date.

Additional context

[yonzhan]

Hang (@bebound) for awareness

[bebound]

Thanks for you report, I'll fix this.

Here is the workaround:
edit /opt/homebrew/bin/az, replace -m with -Im