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Write a Pandas dataframe to CSV format on AWS S3.
import boto3
from io import StringIO
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())
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