__author__ = 'Flying' #coding:utf-8 #Date:2014.6.5 #检测修改过的文件 import os,sys,hashlib,datetime global_DirOld = "" global_DirNew = "" global_FilesList = [] #输入要比对的文件路径 def InputDirPath():     global global_DirOld,global_DirNew     global_DirOld = unicode(raw_input("请输入备份文件所在目录："),"utf-8")     while not os.path.exists(global_DirOld):         print  u"指定的路径不存在，请重新输入"         global_DirOld = unicode(raw_input("请输入备份文件所在目录："),"utf-8")     global_DirNew = unicode(raw_input("请输入要检测文件的目录："),"utf-8")     while not os.path.exists(global_DirNew):         print  u"指定的路径不存在，请重新输入"         global_DirNew = unicode(raw_input("请输入要检测文件的目录："),"utf-8") #将数据保存到文件中 def SaveToFile(filePath,content):     try:         f = open(filePath,"a+")         f.write(content.encode("utf-8") + "\n")         f.close()     except Exception,ex:         print "Error:" + str(ex) #计算文件的MD5值 def CalcMD5(filepath):     try:         #以二进制的形式打开         with open(filepath,'rb') as f:             md5obj = hashlib.md5()             md5obj.update(f.read())             hash = md5obj.hexdigest()             return hash     except Exception,ex:         print "Error:" + str(ex)         return None #遍历目录下的所有文件 def GetAllSubFiles():     global global_FilesList     for dir in os.walk(global_DirNew):         for file in dir[2]:             filePath = dir[0] + os.sep + file             global_FilesList.append(filePath[len(global_DirNew)+1:]) #列出新增文件和变动的文件 def ListChangedFiles():     global global_DirOld,global_DirNew,global_FilesList     print u"变动或新增的文件："     for file in global_FilesList:         filePathOld = global_DirOld + os.sep + file         filePathNew = global_DirNew + os.sep + file         if not os.path.exists(filePathOld) or CalcMD5(filePathOld)!=CalcMD5(filePathNew):             content = "[" + datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')+ "]" + filePathNew             print content             SaveToFile("ChangedFiles.txt",content) if __name__=="__main__":     InputDirPath()     GetAllSubFiles()     ListChangedFiles()