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get_object.py

get_object.py demonstrates how to retrieve an object from an Amazon S3 bucket.

# Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. # # This file is licensed under the Apache License, Version 2.0 (the "License"). # You may not use this file except in compliance with the License. A copy of the # License is located at # # http://aws.amazon.com/apache2.0/ # # This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS # OF ANY KIND, either express or implied. See the License for the specific # language governing permissions and limitations under the License. import logging import boto3 from botocore.exceptions import ClientError def get_object(bucket_name, object_name): """Retrieve an object from an Amazon S3 bucket :param bucket_name: string :param object_name: string :return: botocore.response.StreamingBody object. If error, return None. """ # Retrieve the object s3 = boto3.client('s3') try: response = s3.get_object(Bucket=bucket_name, Key=object_name) except ClientError as e: # AllAccessDisabled error == bucket or object not found logging.error(e) return None # Return an open StreamingBody object return response['Body'] def main(): """Exercise get_object()""" # Assign these values before running the program test_bucket_name = 'BUCKET_NAME' test_object_name = 'OBJECT_NAME' # Set up logging logging.basicConfig(level=logging.DEBUG, format='%(levelname)s: %(asctime)s: %(message)s') # Retrieve the object stream = get_object(test_bucket_name, test_object_name) if stream is not None: # Read first chunk of the object's contents into memory as bytes data = stream.read(amt=1024) # Output object's beginning characters logging.info(f'{test_object_name}: {data[:60]}...') if __name__ == '__main__': main()

Sample Details

Service: s3

Last tested: 2019-2-13

Author: AWS

Type: full-example

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