silly mistake, missing import os

Author: haneric00

aws-opentelemetry-distro/tests/amazon/opentelemetry/distro/test-opentelemetry-instrumentation-langchain-v2/test_chains.py

@@ -4,6 +4,7 @@
 # pylint: disable=no-self-use
 
 import ast
+import os
 
 import boto3
 import pytest