py笔记第一篇

#!/usr/bin/python
#coding=utf-8
#@rename file
#@2019/11/27
import os 
ls = os.rename('/root/tigergao.py','/root/test.py')
print("重命名成功")
files =  os.listdir('/root')
for file in files:
    if '.py' in file:
      print file
#    else: 
#      print("文件不存在")

　　

#!/usr/bin/python
#@listdir
#@2019/11/27
#coding = utf-8
import os
files = os.listdir('/root')
for file in files:
    print file