给定Ftp的IP地址、用户名和密码，列出其中所有文件夹和文件。
# python ftpdir.py <ip> <username> <password>import ftplibimport sysdef lineCallBack(line): global lines lines.append(line) def getFileName(aname): names=aname.split() if len(names) < 9: return '' else: fileNames=names[8:] res='' for name in fileNames: res = res + name+' ' return res.strip()def getDirsFiles(alines): dirs=[] files=[] for line in alines: if line.startswith('d'): fileName=getFileName(line) if fileName=='.' or fileName=='..' : continue dirs.append(fileName) elif line.startswith('-'): fileName=getFileName(line) files.append(fileName) return dirs,files def printItem(pathLevel,item): #part2='|-------' #indent=8 part1=('/t')*pathLevel print part1+item def listDir(aftp,path,pathLevel): global lines aftp.cwd(path) lines=[] aftp.retrlines('LIST',lineCallBack) dirs,files=getDirsFiles(lines) for dir in dirs: printItem(pathLevel,dir) listDir(aftp,path+dir+'/',pathLevel+1) for file in files: printItem(pathLevel,file) host=sys.argv[1]user=sys.argv[2]password=sys.argv[3]ftp=ftplib.FTP(host,user,password)lines=[] listDir(ftp,'/',0)