#!/usr/bin/env python3
import csv


def process(rows):
	# some process you want
	print(rows)
	


# version1
rows = []
for i in range(2):
	filename = f"xxx{i}.csv"
	with open(filename) as f:
		reader = csv.reader(f)
		rows.append([row for row in reader])

for r in rows:
	process(r)


# version2
for i in range(2):
	filename = f"xxx{i}.csv"
	with open(filename) as f:
		reader = csv.reader(f)
		rows = [row for row in reader]
	# Any porcess below
	process(rows)