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        s3 = Session().create_client('s3')
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            Key='keyname',
            ExpressionType='SQL',
            RequestProgress={'Enabled': True},
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        )
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            for event in event_stream:
                # If we received a records event, write the data to a file
                if 'Records' in event:
                    data = event['Records']['Payload']
                    f.write(data)
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                elif 'Progress' in event:
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                # End event indicates that the request finished successfully
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