python网络爬虫从入门到实践 第5章 （一）
http://docs.python.org/3/library/re.html代码：import reline = "Fat cats are smarter than dogs, is it right?"m = re.match( r'(.*) are (.*?) ', line)print ("匹配的结果: ", m)print ("匹配的起始与终点: ", m.span(...
