python实现文件夹同步

定义SynDirTool类，用于同步两个文件夹的内容，从/usr/local/a文件夹到/usr/local/b文件夹，执行方法：

Python代码  

python SynDirTool.py /usr/local/a  /usr/local/b

 SynDirTool.py文件内容：

#!/usr/bin/python
# -*- coding:utf-8 -*-
import os
import shutil
import sys
import logging
class SynDirTool:
def __init__(self,fromdir,todir):
self.fromdir = fromdir
self.todir = todir
def synDir(self):
return self.__copyDir(self.fromdir,self.todir)
def __copyDir(self,fromdir,todir):
#防止该目录不存在，创建目录
self.__mkdir(todir)
count = 0
for filename in os.listdir(fromdir):
if filename.startswith('.'):
continue
fromfile = fromdir + os.sep + filename
tofile = todir + os.sep + filename
if os.path.isdir(fromfile):
count += self.__copyDir(fromfile,tofile)
else:
count += self.__copyFile(fromfile,tofile)
return count
def __copyFile(self,fromfile,tofile):
if not os.path.exists(tofile) :
shutil.copy2(fromfile,tofile)
logging.info("新增%s ==> %s" % (fromfile,tofile))
return 1
fromstat = os.stat(fromfile)
tostat = os.stat(tofile)
if fromstat.st_ctime > tostat.st_ctime:
shutil.copy2(fromfile,tofile)
logging.info("更新%s ==> %s" % (fromfile,tofile))
return 1
return 0
def __mkdir(self,path):
# 去除首位空格
path=path.strip()
# 去除尾部 \ 符号 或者 /
path=path.rstrip(os.sep)
# 判断路径是否存在
isExists=os.path.exists(path)
# 判断结果
if not isExists:
# 如果不存在则创建目录
logging.info(path+' 目录创建成功')
# 创建目录操作函数
os.makedirs(path)
if __name__ == '__main__':
srcdir=sys.argv[1]
descdir=sys.argv[2]
logging.basicConfig(filename='SynDirTool.log', level=logging.INFO)
tool = SynDirTool(srcdir,descdir)
count += tool.synDir()