botocore

How to catch `botocore.errorfactory.UserNotFoundException`?

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When an exception is created by botocore.error_factory then it is not possible to directly import it. Instead of direct import, you should use generated classes for exceptions. A list of possible exceptions is provided for each operation in the documentation. For example, for CognitoIdentityProvider.Client.admin_get_user, possible exceptions are: CognitoIdentityProvider.Client.exceptions.ResourceNotFoundException CognitoIdentityProvider.Client.exceptions.InvalidParameterException CognitoIdentityProvider.Client.exceptions.TooManyRequestsException CognitoIdentityProvider.Client.exceptions.NotAuthorizedException CognitoIdentityProvider.Client.exceptions.UserNotFoundException CognitoIdentityProvider.Client.exceptions.InternalErrorException There is … Read more

How to view Boto3 HTTPS request string

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You could also enable debug logging in boto3. That will log all requests and responses as well as lots of other things. Its a bit obscure to enable it: import boto3 boto3.set_stream_logger(name=”botocore”) The reason you have to specify botocore as the name to log is that all of the actual requests and responses happen at … Read more

Mocking boto3 S3 client method Python

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Botocore has a client stubber you can use for just this purpose: docs. Here’s an example of putting an error in: import boto3 from botocore.stub import Stubber client = boto3.client(‘s3’) stubber = Stubber(client) stubber.add_client_error(‘upload_part_copy’) stubber.activate() # Will raise a ClientError client.upload_part_copy() Here’s an example of putting a normal response in. Additionally, the stubber can now … Read more

How to capture botocore’s NoSuchKey exception?

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from botocore.exceptions import ClientError try: response = self.client.get_object(Bucket=bucket, Key=key) return json.loads(response[“Body”].read()) except ClientError as ex: if ex.response[‘Error’][‘Code’] == ‘NoSuchKey’: logger.info(‘No object found – returning empty’) return dict() else: raise

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