How to list aws dir as CSV

aws_ls_csv.bash

#!/bin/bash

aws s3 ls s3://dronze.2b67/data/wiki --region=us-west-2 --recursive | python -c '
import sys
for line in sys.stdin:
    r = line.strip("\n").split(None, 10)
    fn = r.pop()
    print ",".join(r) + "," + fn.replace("\"", "\"\"")
'>wiki_docs.csv