python统计小脚本

import sysimport urllibimport randomimport rereload(sys)sys.setdefaultencoding('utf-8')#正则r = re.compile(r' elapse (?P<data>[0-9]+)')#多少分位marks = [        0,        25,        50,        75,        80,        85,        90,        95        ]datas = []for m in r.finditer("".join(open(sys.argv[1]).readlines())):    v = m.group('data')    datas.append(float(v.strip()))datas.sort()marks.sort()for mark in marks:    if ((mark > 100) or (mark < 0)):        continue    mark_percent = 1 - float(mark) / 100    mark_size = int(mark_percent * len(datas))    print "%d%% 长尾:\t%f" % (mark, (sum(datas[-mark_size:]) / mark_size))