[Zope] [Python/Zope]how to open a "File"

Hi all , I'm running Zope 2.6.2 (binary) on a Linux box. I FTP-uploaded to the server (into the Site root) a file named "foo". The file has been added as a File Object ( no problem for that ) . This file content a single line ended by a '\n' , wich is an IP address( no problem for that either ) I wrote a very simple python Script that should return the line inside that file _without_ the final '\n' : import string fichier = open('ancienne_ip','r') ip = fichier.readline() ip = string.strip(ip) return ip the problem is that i got error for this : Error Type: NameError Error Value: global name 'open' is not defined What did i do wrong ? Thnak you .