Python 2.7.10 (default, Oct 14 2015, 16:09:02)
[GCC 5.2.1 20151010] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import ftplib
from ftplib import FTP
url = 'ftp.k-bits.com'
user = 'usuario1@k-bits.com'
password = 'happy1234'
archivo = 'Banamex.txt'
ftp = FTP( url )
ftp.login(user=user,passwd=password)
directorio = ftp.retrlines('LIST')
directorio
import os
directorio_local = os.listdir('.')
from __future__ import print_function #para python 2.7
print(directorio_local)
ftp.quit()

remoto = []
ftp.dir(remoto.append)

for r in remoto
  print r

with open("BanBajio.txt", "wb") as localfile
	ftp.retrbinary('RETR'+'BanBajio.txt',localfile.write,1024)

def placeFile( ftp, filename):
	ftp.storbinary('STOR'+filename,open(filename, 'rb'))