Using pygeoip to choose a country from a list if matches.

detect_country_from_list.py

# $ pip install pygeoip
# $ pip install requests
# $ wget -N http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz
# $ gunzip GeoIP.dat.gz

import pygeoip
import requests  # Just for hiting httplib.

# Example or supported countries:
COUNTRIES = ('br', 'mx', 'cl', 'ar')

gi = pygeoip.GeoIP('GeoIP.dat', pygeoip.MEMORY_CACHE)

# Hiting httplib just for local test.
# In case of Django, look for request.META['REMOTE_ADDR']:
response = requests.get('http://httpbin.org/ip')
ip = response.json()['origin']

country_code = gi.country_code_by_addr(ip).lower()

if country_code in COUNTRIES:
    print 'Detected country code as %s.' % country_code
else:
    print 'Country not supported.'