`thunder backend list` raises exception when executed with no added backends.

neuro-ml / thunder

🌩️ The Deep Learning framework based on Lightning

https://neuro-ml.github.io/thunder/

MIT License

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`thunder backend list` raises exception when executed with no added backends. #87

Open arseniybelkov opened 6 months ago

arseniybelkov commented 6 months ago

Exception raised:

File "/home/belkov.arseniy/external-packages/thunder/thunder/cli/backend_cli.py", line 81, in _list
    extra = set(names) - set(local)
            ^^^^^^^^^^
TypeError: 'NoneType' object is not iterable