onnx_utils.py

# Adapted from: https://github.com/huggingface/optimum/blob/0d808ad/optimum/onnx/utils.py

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import onnx
from onnx.external_data_helper import ExternalDataInfo, _get_initializer_tensors


def _get_onnx_external_data_tensors(model: onnx.ModelProto) -> list[str]:
    """
    Gets the paths of the external data tensors in the model.
    Note: make sure you load the model with load_external_data=False.
    """
    model_tensors = _get_initializer_tensors(model)
    model_tensors_ext = [
        ExternalDataInfo(tensor).location
        for tensor in model_tensors
        if tensor.HasField("data_location") and tensor.data_location == onnx.TensorProto.EXTERNAL
    ]
    return model_tensors_ext