The built-in adapter for Falcon framework does not work with Python 3.11

[seratch]

As of Nov 2022, the latest version of Falcon framework is not yet compatible with Python 3.11. When you try to run your code built with Falcon, Python 3.11 raises the following TypeError:

_______ ERROR collecting tests/adapter_tests_async/test_async_falcon.py ________
ImportError while importing test module '/home/runner/work/bolt-python/bolt-python/tests/adapter_tests_async/test_async_falcon.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/opt/hostedtoolcache/Python/3.11.0/x64/lib/python3.11/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/adapter_tests_async/test_async_falcon.py:11: in <module>
    from slack_bolt.adapter.falcon.async_resource import AsyncSlackAppResource
slack_bolt/adapter/falcon/async_resource.py:5: in <module>
    from falcon.asgi import Request, Response
/opt/hostedtoolcache/Python/3.11.0/x64/lib/python3.11/site-packages/falcon/asgi/__init__.py:35: in <module>
    from .app import App
/opt/hostedtoolcache/Python/3.11.0/x64/lib/python3.11/site-packages/falcon/asgi/app.py:46: in <module>
    from .response import Response
/opt/hostedtoolcache/Python/3.11.0/x64/lib/python3.11/site-packages/falcon/asgi/response.py:17: in <module>
    from asyncio.coroutines import CoroWrapper  # type: ignore
E   ImportError: cannot import name 'CoroWrapper' from 'asyncio.coroutines' (/opt/hostedtoolcache/Python/3.11.0/x64/lib/python3.11/asyncio/coroutines.py)

There is no workaround until Falcon project releases a new version with the fix on their side.

See also:

• Add Python 3.11 to the supported language versions #751 (comment)
• ImportError: cannot import name 'CoroWrapper' from 'asyncio.coroutines' in Python 3.11 falconry/falcon#2120

Category (place an x in each of the [ ])

• slack_bolt.App and/or its core components
• slack_bolt.async_app.AsyncApp and/or its core components
• Adapters in slack_bolt.adapter
• Others

Requirements

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[vytas7]

We'll try to cut a bugfix release (Falcon 3.1.1) ASAP (hopefully in the middle of the next week).

[seratch]

@vytas7 Thanks for sharing the update! Once the release is available, I will check if it works for us too

[vytas7]

3.1.1 is out now! Feel free to test and let us know if it works for you.

[seratch]

@vytas7 Thanks for letting us know this! I will check it out

[seratch]

It looks like that v3.1.1 works without any issues!