python封装的一个ftp功能的代码

from ctypes import *
import os
import sys
import ftplib

class KANFtp:
ftp = ftplib.FTP()
bIsDir = False
path = ""
def __init__(self, host):
self.ftp.connect( host )

def Login(self, user, passwd ):
self.ftp.login( user, passwd )
print self.ftp.welcome
def DownLoadFile( self, LocalFile, RemoteFile ):
file_handler = open( LocalFile, 'wb' )
self.ftp.retrbinary( "RETR %s" %( RemoteFile ), file_handler.write )
file_handler.close()
return True

def UpLoadFile( self, LocalFile, RemoteFile ):
if os.path.isfile( LocalFile ) == False:
return False
file_handler = open( LocalFile, "rb" )
self.ftp.storbinary( 'STOR %s'%RemoteFile, file_handler, 4096 )
file_handler.close()
return True

def UpLoadFileTree( self, LocalDir, RemoteDir ):
if os.path.isdir( LocalDir ) == False:
return False
LocalNames = os.listdir( LocalDir )
self.ftp.cwd( RemoteDir )
for Local in LocalNames:
src = os.path.join( LocalDir, Local)
if os.path.isdir( src ):
self.UpLoadFileTree( src, Local )
else:
self.UpLoadFile( src, Local )

self.ftp.cwd( ".." )
return

def DownLoadFileTree( self, LocalDir, RemoteDir ):
if os.path.isdir( LocalDir ) == False:
os.makedirs( LocalDir )
self.ftp.cwd( RemoteDir )
RemoteNames = self.ftp.nlst()
for file in RemoteNames:
Local = os.path.join( LocalDir, file )
if self.isDir( file ):
self.DownLoadFileTree( Local, file )
else:
self.DownLoadFile( Local, file )
self.ftp.cwd( ".." )
return

def show( self, list  ):
result = list.lower().split( " " )
if self.path in result and "<dir>" in result:
self.bIsDir = True

def isDir( self, path ):
self.bIsDir = False
self.path = path
#this ues callback function ,that will change bIsDir value
self.ftp.retrlines( 'LIST', self.show )
return self.bIsDir

ftp = KANFtp('192.168.21.10')
ftp.Login('XXX','XXXX')

#ftp.DownLoadFile('TEST.TXT', 'publichechangminTEST.TXT')#ok
#ftp.UpLoadFile('TEST.TXT', 'publichechangminTEST.TXT')#ok
#ftp.DownLoadFileTree('HECM', 'publichechangminxxx')#ok
ftp.UpLoadFileTree('ts',"Publichechangmin   estFTP" )
print "ok!"