gistfile1.py

import csv

f2_ids = set()
f2 = open('file2.txt', 'rt')
f2_reader = csv.reader(f2)
for row in f2_reader:
	f2_ids.add(row[0])

f1 = open('file1.txt', 'rt')
for line in f1.readlines():
	line = line.strip()
	parts = line.split(',')
	id = parts[0].strip('"')
	if id in f2_ids:
		print line
f1 = open('file1.txt', 'rt')