[Python] Python ftplib EOFerror

I have a script that connects to server and makes a local copy of the whole directory. EOFerror occurs after exactly 50 files of any choice have been downloaded.

Can anyone please tell me, what is wrong with the script?

ERROR:

Traceback (most recent call last):
File "ftp.py", line 37, in <module>
ftp_walk(ftp)
File "ftp.py", line 17, in ftp_walk
currdir = ftp.pwd()[1:]
File "/usr/lib/python2.7/ftplib.py", line 574, in pwd
resp = self.sendcmd('PWD')
File "/usr/lib/python2.7/ftplib.py", line 244, in sendcmd
return self.getresp()
File "/usr/lib/python2.7/ftplib.py", line 210, in getresp
resp = self.getmultiline()
File "/usr/lib/python2.7/ftplib.py", line 196, in getmultiline
line = self.getline()
File "/usr/lib/python2.7/ftplib.py", line 186, in getline
if not line: raise EOFError
EOFError


SCRIPT:

#!/usr/bin/python

import ftplib
import sys
import os
import datetime

def ftp_walk(ftp):
dirs = ftp.nlst()
for item in (path for path in dirs if path not in ('.', '..')):
try:
ftp.cwd(item)
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M")+' DIR: ', ftp.pwd()
ftp_walk(ftp)
ftp.cwd('..')
except Exception, e:
currdir = ftp.pwd()[1:]
if not os.path.exists(currdir): os.makedirs(currdir)
try:
with open(currdir+"/"+item, 'wb') as f:

def callback(data):
f.write(data)

ftp.retrbinary('RETR %s' % item, callback)
f.close()
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M")+' RETR: '+ currdir+"/"+item
except Exception, e:
print e


ftp = ftplib.FTP("hhhhhhhhhhhhhh")
ftp.login("aaaaaaaa", "bbbbbbbbbbb")
ftp.sendcmd("TYPE I") #binary mode
ftp.set_pasv(True) # Trying Passive mode
ftp.cwd("public_html/eeeeeeee/rrrrrrrr/images")
ftp_walk(ftp)
ftp.quit()


Edit: After manual update of ftplib for python 2.7:

Traceback (most recent call last):
File "ftp.py", line 29, in <module>
ftp = ftplib.FTP("something.com")
File "/usr/lib/python2.7/ftplib.py", line 114, in __init__
self.connect(host)
File "/usr/lib/python2.7/ftplib.py", line 150, in connect
self.file = self.sock.makefile('r', encoding=self.encoding)
TypeError: makefile() got an unexpected keyword argument 'encoding'

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