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需求:快速进行ftp上传 ,下载,查询文件
原来直接在shell下操作:
需要【连接,输用户名,输密码,单文件操作,存在超时限制】
太过于繁琐,容易操作失败
脚本改进:
一句命令,搞定多文件上传,下载,查询,列表等操作
后期可以加入更强大的功能
直接上脚本:
#!/usr/bin/python #ftp.py #this script is used to make some ftp operations more convenient #add upload and download operations 20111210 version0.1 import sys,os,ftplib,socket CONST_HOST = "your ftp host or ip" CONST_USERNAME = "your username" CONST_PWD = "your password" CONST_BUFFER_SIZE = 8192 COLOR_NONE = "\033[m" COLOR_GREEN = "\033[01;32m" COLOR_RED = "\033[01;31m" COLOR_YELLOW = "\033[01;33m" def connect(): try: ftp = ftplib.FTP(CONST_HOST) ftp.login(CONST_USERNAME,CONST_PWD) return ftp except socket.error,socket.gaierror: print("FTP is unavailable,please check the host,username and password!") sys.exit(0) def disconnect(ftp): ftp.quit() def upload(ftp, filepath): f = open(filepath, "rb") file_name = os.path.split(filepath)[-1] try: ftp.storbinary('STOR %s'%file_name, f, CONST_BUFFER_SIZE) except ftplib.error_perm: return False return True def download(ftp, filename): f = open(filename,"wb").write try: ftp.retrbinary("RETR %s"%filename, f, CONST_BUFFER_SIZE) except ftplib.error_perm: return False return True def list(ftp): ftp.dir() def find(ftp,filename): ftp_f_list = ftp.nlst() if filename in ftp_f_list: return True else: return False def help(): print("help info:") print("[./ftp.py l]\t show the file list of the ftp site ") print("[./ftp.py f filenamA filenameB]\t check if the file is in the ftp site") print("[./ftp.py p filenameA filenameB]\t upload file into ftp site") print("[./ftp.py g filenameA filenameB]\t get file from ftp site") print("[./ftp.py h]\t show help info") print("other params are invalid") def main(): args = sys.argv[1:] if len(args) == 0: print("Params needed!") sys.exit(0) ftp = connect() if args[0] == "p": f_list = args[1:] for up_file in f_list: if not os.path.exists(up_file): print(("UPLOAD: %s "+COLOR_RED+"FAILED"+COLOR_NONE+" :file not exist")%up_file) continue elif not os.path.isfile(up_file): print(("UPLOAD: %s "+COLOR_RED+"FAILED"+COLOR_NONE+" :%s is not a file")%(up_file,up_file)) continue if upload(ftp, up_file): print(("UPLOAD: %s "+COLOR_GREEN+"SUCCESS"+COLOR_NONE)%up_file) else: print(("UPLOAD: %s "+COLOR_RED+"FAILED"+COLOR_NONE)%up_file) elif args[0] == "g": f_list = args[1:] for down_file in f_list: if not find(ftp,down_file): print(("DOWNLOAD: %s "+COLOR_RED+"FAILED"+COLOR_NONE+" :%s is not in the ftp site")%(down_file,down_file)) continue if download(ftp, down_file): print(("DOWNLOAD: %s "+COLOR_GREEN+"SUCCESS"+COLOR_NONE)%down_file) else: print(("DOWNLOAD: %s "+COLOR_RED+"FAILED"+COLOR_NONE)%down_file) elif args[0] == "l": list(ftp) elif args[0] == "f": f_list = args[1:] for f_file in f_list: if find(ftp,f_file): print(("SEARCH: %s "+COLOR_GREEN+"EXIST"+COLOR_NONE)%f_file) else: print(("SEARCH: %s "+COLOR_RED+"NOT EXIST"+COLOR_NONE)%f_file) elif args[0] == "h": help() else: print("args are invalid!") help() disconnect(ftp) if __name__ == "__main__": main()
常用函数:
用手册查看,以下只是简略,因为没用用到,[待整理]:
login(user='',passwd='', acct='') 登录到FTP 服务器,所有的参数都是可选的
pwd() 当前工作目录
cwd(path) 把当前工作目录设置为path
dir([path[,...[,cb]]) 显示path 目录里的内容,可选的参数cb 是一个回调函数,会被传给retrlines()方法
nlst([path[,...]) 与dir()类似,但返回一个文件名的列表,而不是显示这些文件名
retrlines(cmd [, cb]) 给定FTP 命令(如“RETR filename”),用于下载文本文件。可选的回调函数cb 用于处理文件的每一行
retrbinary(cmd, cb[,bs=8192[, ra]]) 与retrlines()类似,只是这个指令处理二进制文件。回调函数cb 用于处理每一块(块大小默认为8K)下载的数据。
storlines(cmd, f) 给定FTP 命令(如“STOR filename”),以上传文本文件。要给定一个文件对象f
storbinary(cmd, f[,bs=8192]) 与storlines()类似,只是这个指令处理二进制文件。要给定一个文件对象f,上传块大小bs 默认为8Kbs=8192])
rename(old, new) 把远程文件old 改名为new
delete(path) 删除位于path 的远程文件
mkd(directory) 创建远程目录