#!/bin/bash
# ideone boilerplate: run in temp dir
t=$(mktemp -d -t ideone.XXXXXXXX) || exit
trap 'rm -rf "$t"' ERR EXIT
cd "$t"
 
cat <<\: >some.csv
header,second,third
"quoted
value","over
multiple
lines","with
""quoted""
value
embedded"
back,to,normal
:
 
cat <<\: >prog.py
import csv
 
def rawcsv(filename):
    with open(filename, "r") as csvdata, open(
            filename, "rb") as rawdata:
        reader = csv.reader(csvdata)
        prev = 0
        for row in reader:
            # Where is the file pointer now?
            pos = reader.line_num
            # Read the same amount of rawdata
            raw = b"".join([rawdata.readline() for _ in range(pos - prev)])
            prev = pos
            yield raw, row
 
for raw, row in rawcsv("some.csv"):
    print(f"Raw: {raw}")
    print(f"Row: {row}")
:
 
python3 prog.py
 

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