FTP.retrlines help

[fabio.geraci]

Hello everyone,

I am a newbee on python. I have created a python script to connect to a remserver.

datfile = []
for dk in range(len(files)):
   dfnt=files[dk]
   dpst=dfnt.find('.dat')
   if dpst == 15:
       dlist = dfnt[:]
       datfile.append(dlist)

datfile is

['a.dat','b.dat']

which as you can see create a list. now I am passing this list to

ftp.retrbinary('datfile')

but this lines returns an error:

typeerror: retrbinary() takes at least 3 arguments (2 given)

not sure what is looking for? thanks in advanced for anyhelp