bugfix: allow empty tuple for inputs or arg_inputs

[jiwoong-choi]

Description

Calling convert_exported_program_to_serialized_trt_engine with either inputs=() or arg_inputs=() is blocked by AssertionError. This is because the empty tuple is evaluated as False when it is implicitly casted to bool type.

Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
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• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
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[narendasan]

Thanks for the patch!, this change seems good to me. Would it be possible to add a simple testcase to //tests/py/dynamo/models?

[peri044]

LGTM