$ pytest tests/models/multimodal/generation/test_nemotron_parse.py::test_models[5-bfloat16-nvidia/NVIDIA-Nemotron-Parse-v1.1] ... ValueError: not enough values to unpack (expected 2, got 1)

TL;DR

• The ValueError: not enough values to unpack (expected 2, got 1) suggests a mismatch in the expected and actual number of values returned by a function, which needs to be investigated and corrected in the test_nemotron_parse.py test.

Guidance

• Review the test_nemotron_parse.py file, specifically the test_models function with the parameter [5-bfloat16-nvidia/NVIDIA-Nemotron-Parse-v1.1], to identify where the ValueError is being raised.
• Check the function call that is causing the error to ensure it is returning the expected number of values.
• Verify that the environment is correctly configured by installing vLLM and Transformers from source as described, to ensure the test results reflect the current state of both libraries.
• Consider adding error handling or debugging statements to understand the values being returned and why they do not match the expected number.

Example

• Without the specific code causing the error, a generic example of how to handle such an error might involve checking the length of the returned values before attempting to unpack them:

returned_values = some_function()
if len(returned_values) == 2:
    value1, value2 = returned_values
else:
    # Handle the case where the number of returned values is not 2
    print("Error: Expected 2 values, got", len(returned_values))

Notes

• The fix will depend on the specific code causing the ValueError, which is not provided in the issue description.
• Ensuring the environment is set up as described is crucial for reproducing and fixing the issue.

Recommendation

• Apply workaround: The best course of action seems to be to apply a workaround by modifying the code to handle the variable number of returned values or to correct the function call to return the expected number of values, as the root cause of the issue is not explicitly stated and may require further investigation.