解析逗号分隔的csv文件，并在python中加引号

Python为此提供了一个模块：

http://docs.python.org/library/csv.html

import csv, sysfilename = 'some.csv'with open(filename, 'rb') as f:    reader = csv.reader(f)    try:        for row in reader: print row    except csv.Error, e:        sys.exit('file %s, line %d: %s' % (filename, reader.line_num, e))