Python统计文件中去重后uuid个数的方法

import repattern=re.compile(r'&uuid=.*&')uuidset=set()with open('request.log.2015-05-26','rt') as f:    for line in f:        all=pattern.findall(line)        if len(all)>0 and line.find('iphone')>0:            # print(all[0])            uuidset.add(all[0])print(len(uuidset))