Can't catch the ResourceNotFoundException

Describe the bug

Hello,

I’m creating a lambda function to store some data into a DynamoDB table. Whether the table doesn’t exists. it must be created, however the specific exception class isn’t available in the lib to import or call it.

Expected Behavior

Catch the specific exception (ResourceNotFoundException)

    try:
        table = dynamodb_client.Table(TABLE_NAME)
        logger.info(table.table_status)
    except ResourceNotFoundException:
        create_table(TABLE_NAME)

Current Behavior

General expcetion catching:

    try:
        table = dynamodb_client.Table(TABLE_NAME)
        logger.info(table.table_status)
    except:
        create_table(TABLE_NAME)

Reproduction Steps

The table doesn’t exists and the function is:

    TABLE_NAME = 'newtable'
    dynamodb_client = boto3.resource('dynamodb')

    table = dynamodb_client.Table(TABLE_NAME)
    logger.info(table.table_status)

and the riased error is

botocore.errorfactory.ResourceNotFoundException: An error occurred (ResourceNotFoundException) when calling the DescribeTable operation: Requested resource not found: Table: newtable not found

Possible Solution

No response

Additional Information/Context

No response

SDK version used

boto3

Environment details (OS name and version, etc.)

Ubuntu 22.04

[corey-cole]

Hi,

botocore.exceptions.ClientError seems to not intercept the botocore.errorfactory.ResourceNotFoundException exception.

I am using:

    try:
        thing = client.describe_thing(thingName=thingName)
    except client.exceptions.ResourceNotFoundException as error:
        print(error)

from botocore.exceptions import ClientError

# Assumes client is already initialized as DynamoDB client
try:
    thing = client.describe_table(TableName='does-not-exist')
except ClientError as err:
    # This will not result in a failed assertion
    assert err.response['Error']['Code'] == 'ResourceNotFoundException'

[sbarzaghialteaup]

Hi,

Edit: Don’t consider this, see my next comment.

botocore.exceptions.ClientError seems to not intercept the botocore.errorfactory.ResourceNotFoundException exception.

I am using:

    try:
        thing = client.describe_thing(thingName=thingName)
    except client.exceptions.ResourceNotFoundException as error:
        print(error)