Sagemaker Save data

Sagemaker save Dataframe to S3 Bucket

After preparing a dataframe using feature engineering pipeline, it is good practice to write the file back to S3 store. You can use this code snippet to write file back:

filename = 'data/dataframe_20190809.csv'
DESTINATION = bucket

def _write_dataframe_to_csv_on_s3(dataframe, filename):
    """ Write a dataframe to a CSV on S3 """
    print("Writing {} records to {}".format(len(dataframe), filename))
    # Create buffer
    csv_buffer = StringIO()
    # Write dataframe to buffer
    dataframe.to_csv(csv_buffer, sep=",", index=False)
    # Create S3 object
    s3_resource = boto3.resource("s3")
    # Write buffer to S3 object
    s3_resource.Object(DESTINATION,filename).put(Body=csv_buffer.getvalue())

_write_dataframe_to_csv_on_s3(securities_metrics_data_groupby, filename)

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