应该这样做:
lines = '''"AAA", "BBB", "Test, Test", "CCC"
"111", "222, 333", "XXX", "YYY, ZZZ"'''.splitlines()
for l in csv.reader(lines, quotechar='"', delimiter=',',
quoting=csv.QUOTE_ALL, skipinitialspace=True):
print l
>>> ['AAA', 'BBB', 'Test, Test', 'CCC']
>>> ['111', '222, 333', 'XXX', 'YYY, ZZZ']