实现python代码的动态删除多余的日志文件（非自带滚动日志方法）

实现python代码的动态删除多余的日志文件（非自带滚动日志方法）

# -*- coding:utf8 -*-
import os
from os.path import join,getsize
 
def getDirSize(dir):
    size=0L
    for root,dirs,files in os.walk(dir):
        size+=sum([getsize(join(root,name)) for name in files])
	
    return size/1024/1024

def delSpare(dir,Realsize):
	fileName = []
	sumSize = Realsize
	MaxSize=10240
	if sumSize>=MaxSize:
		for root,dirs,files in os.walk(dir):
			for name in files:
				fileName.append(name) 
		fileName.sort()
		#print fileName
		while(sumSize>=MaxSize):
			name=fileName.pop(0)
			#print name
			os.popen('rm -rf ' + dir+'/'+ name)
			sumSize = getDirSize(dir)
			#print sumSize

if __name__ == '__main__':
	dirname= '/home/will/bak/RunningLog'
	filesize = getDirSize(dirname)
	delSpare(dirname,filesize)