Python删除指定目录下的过期文件，python过期,import osimp

Python删除指定目录下的过期文件，python过期,import osimp

import osimport sysimport timeclass DeleteLog:    def __init__(self,fileName,days):        self.fileName = fileName        self.days = days    def delete(self):        if os.path.isfile(self.fileName):            fd = open(self.fileName,'r')            while 1:                buffer = fd.readline()                if not buffer : break                if os.path.isfile(buffer):                    os.remove(buffer)            fd.close()        elif os.path.isdir(self.fileName):            for i in [os.sep.join([self.fileName,v]) for v in os.listdir(self.fileName)]:                print i                if os.path.isfile(i):                    if self.compare_file_time(i):                        os.remove(i)                elif os.path.isdir(i):                    self.fileName = i                    self.delete()    def compare_file_time(self,file):        time_of_last_access = os.path.getatime(file)        age_in_days = (time.time()-time_of_last_access)/(60*60*24)        if age_in_days > self.days:            return True        return Falseif __name__ == '__main__':    if len(sys.argv) == 2:        obj = DeleteLog(sys.argv[1],0)        obj.delete()    elif len(sys.argv) == 3:        obj = DeleteLog(sys.argv[1],int(sys.argv[2]))        obj.delete()    else:        print "usage: python %s listFileName|dirName [days]" % sys.argv[0]        sys.exit(1)