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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"logger.propagate=False issue","articleBody":"Hello,\r\n\r\nI am pretty new to learning Python and I am trying to set up JSON formatting for Lambda Python function. I came across your blog/repo and it's very helpful (thank you!). \r\n\r\nHowever, I am running into an issue. I am using your custom_logger.py. I get the JSON formatted error with the error message being correct. But, the CloudWatch logs also show the usual Lambda error \"[ERROR] ClientError: An error occurred (404) when calling the HeadObject operation...\" even though the logger.propagate=False is set in the custom_logger.  I did check if the property is being set up correctly (by printing it to logs), and it is indeed set as false.\r\n\r\nAny ideas?\r\n\r\nI set up LOGGER as:\r\n\r\n```\r\n# Setup logging\r\nFUNCTION_NAME = {\"function\": os.getenv(\"AWS_LAMBDA_FUNCTION_NAME\")}\r\nLOGGER, ADAPTER = custom_logger.setup_logger(FUNCTION_NAME)\r\n```\r\n\r\nFunction that throws the error:\r\n\r\n```\r\ndef aws_s3_read(bucket_name, object_key):\r\n   \r\n    client = boto3.client('s3', region_name = 'ca-central-1')\r\n    tmpkey = object_key.replace('/', '')\r\n    download_path = '/tmp/{}'.format(tmpkey)\r\n    \r\n    try:\r\n        client.download_file(bucket_name, object_key, download_path)\r\n    except ClientError as err:\r\n        LOGGER.error(err.response['Error']['Code'] + \" \" + err.response['Error']['Message'])\r\n        raise err\r\n    finally:\r\n        # Optionally do something to be executed regardless if the try block raises an error or not\r\n        LOGGER.info(\"FINAL BLOCK\")\r\n       \r\n    LOGGER.info(\"Downloaded object \" + object_key + \" from S3 bucket \" + bucket_name + \" into file \" + download_path)\r\n    return\r\n```","author":{"url":"https://github.com/borkod","@type":"Person","name":"borkod"},"datePublished":"2021-01-30T14:31:48.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/1/lambda-python-logging-example/issues/1"}