Python implements folder synchronization

Define the SynDirTool class, which is used to synchronize the contents of two folders, from the /usr/local/a folder to the /usr/local/b folder. Execution method:

Python code

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

SynDirTool.py file Content:

Python code

#!/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()

Note:

1. The log will be output to the SynDirTool.log file in the same directory as the SynDirTool.py file

2. If the destination folder already has the file, and the file is newer , the files in the source folder will no longer be copied