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#!/usr/bin/env python

# -*- coding: utf-8 -*-

"""http://ginstrom.com/scribbles/2007/10/08/design-patterns-python-style/"""

class GreekGetter:

"""A simple localizer a la gettext"""

def __init__(self):

self.trans = dict(dog="σκύλος", cat="γάτα")

def get(self, msgid):

"""We'll punt if we don't have a translation"""

try:

return self.trans[msgid]

except KeyError:

return str(msgid)

class EnglishGetter:

"""Simply echoes the msg ids"""

def get(self, msgid):

return str(msgid)

def get_localizer(language="English"):

"""The factory method"""

languages = dict(English=EnglishGetter, Greek=GreekGetter)

return languages[language]()

# Create our localizers

e, g = get_localizer(language="English"), get_localizer(language="Greek")

# Localize some text

for msgid in "dog parrot cat bear".split():

print(e.get(msgid), g.get(msgid))

### OUTPUT ###

# dog σκύλος

# parrot parrot

# cat γάτα

# bear bear