Since SDK 1.5.1 you can use X-AppEngine-country request header (returns a two letter country code or ZZ for unknow locations) to retriev the country of the visitor, no need for external modules anymore.

IP to Country is a Google App Engine module (Python) to convert IP addresses into country names and country codes.

This module is provided FREE under the terms of the GENERAL PUBLIC LICENSE, June 1991

• This product is a Google App Engine port of http://www.phptutorial.info/iptocountry/the_script.html
• This product includes IP to Country database from http://software77.net/cgi-bin/ip-country/geo-ip.pl

sys.path.insert(0, 'iptocountry.zip')
from iptocountry import convert as iptolocation, country as iptocountry

location = iptolocation()
country = iptocountry()

print "You are from %s (country code - %s)" % (country, location)

To update the database, upzip the PHP files from http://www.phptutorial.info/iptocountry/ip_files.zip to /src/ip_files. Then run parser.php which generates new .PY files to src/iptocountry. Zip the directory src/iptocountry to iptocountry.zip and use the file instead of the old one in your projects.

IP to Country does not use database but a collection of files to find the country for a particular IP address. Google App Engine has a limit of 1000 files per application so it is highly encouraged to ZIP all the module files into one bigger file. See build for an example.