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Write a Pandas dataframe to Parquet format on AWS S3.
# Note: make sure `s3fs` is installed in order to make Pandas use S3.
# Credentials for AWS in the normal location ~/.aws/credentials
def _write_dataframe_to_parquet_on_s3(dataframe, filename):
""" Write a dataframe to a Parquet on S3 """
print("Writing {} records to {}".format(len(dataframe), filename))
output_file = f"s3://{DESTINATION}/{filename}/data.parquet"
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