[Fix] Avoid accessing parents_node_mapping[tensor_name] when the tensor is a model input and has no parent node - #4169
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andrey-churkin merged 1 commit intoAug 11, 2026
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anzr299
approved these changes
Aug 11, 2026
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Changes
In the
_get_bias_attr()function, we accessparents_node_mapping[tensor_name]to get the parent node that produces the tensor with the giventensor_name. However, the tensor can also be a model input, in which case it does not have a parent node. This results in aKeyError.The fix handles this case correctly by checking whether a parent node exists before accessing its op_type.
Reason for changes
A
KeyErrorwas raised whentensor_namereferred to a model input that did not have a corresponding entry inparents_node_mapping.Related tickets
CVS-192069
Tests
test_get_bias_attr
Weight compression - success
Test examples - success