python遍历文件夹

以下为例，读取目标目录下所有文件的内容

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os

rootdir = '/wj/zabbix/float_result'
list = os.listdir(rootdir)
#print(list)
def read():
    for i in range(0, len(list)):
        path = os.path.join(rootdir, list[i])
        if os.path.isfile(path):
            with open(path, "r") as f:
                for msg in f.readlines():
                    msg = msg.strip('\n')
                    f.close()
                    print(msg)

if __name__ == '__main__':
    a = read()