具体代码如下所示：

#!/usr/bin/python

# -*- coding: GBK -*-

# -*- coding: UTF-8 -*-

from ftplib import FTP

import os

import datetime

ftp_server = '127.0.0.1' # 对应ftp服务器地址

username = 'ponshine' # 用户名

password = '1qaz2wsx' # 密码

ftp_path = '/GBCC/' # ftp目录

local_path = "C:Fpythonpythonwangtestwyjj2" #本地的目录

# 连接FTP

def ftpconnect():

ftp = FTP()

ftp.set_debuglevel(2) # 打开调试级别2，显示详细信息

ftp.connect(ftp_server, 21) # 连接

ftp.login(username, password) # 登录，如果匿名登录则用空串代替即可

return ftp

# 获取当前的年月日时分秒

def getdatetime():

i = datetime.datetime.now()

date = ("%s%s%s%s%s%s" % (i.year, i.month, i.day, i.hour,i.minute,i.second))

return date # 需返回才能取值

# 获取当前的年月日

def getdate():

import datetime

i = datetime.datetime.now()

date = ("%s%s%s" % (i.year, i.month, i.day))

return date # 需返回才能取值

def downloadfile(remotepath, localpath):

ftp = ftpconnect() # 连接ftp

print ftp.getwelcome() # 显示ftp服务器欢迎信息

ftp_filename = ftp.nlst(remotepath) # 运用nlst()获取文件名

print 'ftp_filename: ', ftp_filename # ftp上的文件名

for eachfile in ftp_filename: # 循坏取文件名

if eachfile.endswith('.AVL'):

localpath_files = eachfile.split("/")

localpath_file = localpath_files[len(localpath_files) - 1] # 文件名：localpath_file= GBCC_201611102155_01.AVL

print "localpath_file--->" + localpath_file

# 创建记录下载文件名的文件名

writefiletext = local_path + getdate() + ".txt" # 记录下载后的文件名

print "writefile_text--->" + writefiletext

if os.path.exists(writefiletext):

print writefiletext + "is exists"

else:

print writefiletext + "is not exists"

makefile = open(writefiletext,"w+")

makefile.close()

files = open(writefiletext, "r") # 打开黑名单表

print "writefiletext--->" + writefiletext

try:

all_the_text = files.read()

print "all_the_text-------》" + all_the_text

if all_the_text.__contains__(localpath_file):

print "文件已下载，不需要重复下载"

else:

print "文件没有下载，现在开始下载"

bufsize = 1024 # 设置缓冲块大小

fp = open(localpath + localpath_file, "wb+")

ftp.retrbinary('RETR ' + eachfile, fp.write, bufsize) # 下载文件

fo = open(writefiletext,"ab+")

fo.write(localpath_file + "n") # 将每个文件名写入文件

fo.flush() # 刷新文件

fo.close()

fp.flush()

finally:

print "结束了"

files.close()

ftp.set_debuglevel(0)

ftp.close()

if __name__ == "__main__":

downloadfile("/GBCC", "C:Fpythonpythonwangtestwyjj2")

补充：python 黑名单过滤

需要过滤一些词语

写了下面这个函数，在blacklist 文件中添加需要过滤的词语