Since the other thread gone into the wild, i choosed not to participate any longer and i state the question in this new thread.

'python files.py' interprets without an error.
Problem is that when via browser - http://superhost.gr/cgi-bin/koukos.py
i receive the following:
Code:
------------------------------- 
root@nikos [/home/nikos/www/cgi-bin]# ls 
./  ../  convert.py*  files.py*  .htaccess  koukos.py*  metrites.py*  pelatologio.py* 

root@nikos [/home/nikos/www/cgi-bin]# tail -F /usr/local/apache/logs/error_log & 

root@nikos [/home/nikos/www/cgi-bin]# [Wed Jun 05 22:47:43 2013] [error] [client                                                                                         79.103.41.173] (2)No such file or directory: exec of '/home/nikos/public_html/c                                                                                        gi-bin/koukos.py' failed 
[Wed Jun 05 22:47:43 2013] [error] [client 79.103.41.173] Premature end of scrip                                                                                        t headers: koukos.py 
----------------------------------
What file does the error complain it cannot find? I do not understand its message. Here is the code of koukos.py

-----------------------------
Code:
#!/usr/bin/python 
# coding=utf-8 

import cgitb; cgitb.enable() 
import cgi, os, sys, locale, codecs 
from http import cookies 

#needed line, script does *not* work without it 
sys.stdout = codecs.getwriter('utf-8')(sys.stdout.detach()) 

# initialize cookie 
cookie = cookies.SimpleCookie( os.environ.get('HTTP_COOKIE') ) 
cookie.load( cookie ) 
nikos = cookie.get('nikos') 

# if visitor cookie does exist 
if nikos: 
        message = "ΑΠΟ ΤΗΝ ΕΠΟΜΕΝΗ ΕΠΙΣΚΕΨΗ ΣΟΥ ΘΑ ΣΕ ΥΠΟΛΟΓΙΖΩ ΩΣ ΕΠΙΣΚΕΠΤΗ ΑΥΞΑΝΟΝΤΑΣ ΤΟΝ ΜΕΤΡΗΤΗ!" 
        cookie['nikos'] = 'admin' 
        cookie['nikos']['path'] = '/' 
        cookie['nikos']['expires'] = -1                #this cookie will expire now 
else: 
        message  = "ΑΠΟ ΔΩ ΚΑΙ ΣΤΟ ΕΞΗΣ ΔΕΝ ΣΕ ΕΙΔΑ, ΔΕΝ ΣΕ ΞΕΡΩ, ΔΕΝ ΣΕ ΑΚΟΥΣΑ! ΘΑ ΕΙΣΑΙ ΠΛΕΟΝ Ο ΑΟΡΑΤΟΣ ΕΠΙΣΚΕΠΤΗΣ!!" 
        cookie['nikos'] = 'admin' 
        cookie['nikos']['path'] = '/' 
        cookie['nikos']['expires'] = 60*60*24*30*12                #this cookie will expire in a year 


print( cookie, "Content-type: text/html; charset=utf-8\n", message ) 

sys.exit(0)
---------------------------------

All it tries to do is to set a cookie.


print( cookie, "\nContent-type: text/html; charset=utf-8\n\n", message )

or by trying:

print( cookie + "\nContent-type: text/html; charset=utf-8\n\n" + message )

or by trying:

print( cookie )
print( '''Content-type: text/html; charset=utf-8\n''' )
print( message )

the output is forall of them

Code:
------------------------------- 
root@nikos [/home/nikos/www/cgi-bin]# ls 
./  ../  convert.py*  files.py*  .htaccess  koukos.py*  metrites.py*  pelatologio.py* 

root@nikos [/home/nikos/www/cgi-bin]# tail -F /usr/local/apache/logs/error_log & 

root@nikos [/home/nikos/www/cgi-bin]# [Wed Jun 05 22:47:43 2013] [error] [client                                                                                         79.103.41.173] (2)No such file or directory: exec of '/home/nikos/public_html/c                                                                                        gi-bin/koukos.py' failed 
[Wed Jun 05 22:47:43 2013] [error] [client 79.103.41.173] Premature end of scrip                                                                                        t headers: koukos.py 
----------------------------------