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Zope 3 sources for pycountry databases

Project description

This package lets you use the pycountry database within Zope 3.

In practice, this means e.g., that you can easily get a zope.schema.Choice field to provide a full list of iso 3166 country codes.

For more information about the database please refer to the pycountry product. provides Zope 3 sources for the pycountry databases. You can use it e.g. to get a zope.schema.Choice field with all iso 3166 countries.

>>> import
>>> import
>>> import zope.schema

ISO 3166 countries

To get a list of ISO 3166 countries in a webform, you can use the zope.schema.Choice field and provide the as source:

>>> countries_field = zope.schema.Choice(title=u'Country',
>>> countries_field
<zope.schema._field.Choice object at 0x...>
>>> countries = iter(countries_field.source)

The sourcefactory returns Country objects as values, which use the values from pycountry:

>>> afghanistan =
>>> afghanistan
< object at 0x...>

Calling the next() method again returns the next country from the source:

>>> islands =
u'\xc5land Islands'

There are all information available, which you can get from pycountry:

>>> afghanistan.alpha2
>>> afghanistan.alpha3
>>> afghanistan.numeric
>>> afghanistan.official_name
'Islamic Republic of Afghanistan'

ISO 15924 Scripts

Scripts are similar to countries:

>>> scripts_field = zope.schema.Choice(title=u'Script',
>>> scripts = iter(scripts_field.source)
>>> arabic =
>>> aramaic =
u'Imperial Aramaic'

ISO 4217 Currencies

Currencies are, again, similar to the ones before:

>>> currencies_field = zope.schema.Choice(title=u'Currency',
>>> currencies = iter(currencies_field.source)
>>> dirham =
u'UAE Dirham'
>>> afghani =

ISO 639 Languages

Languages are similar, too:

>>> languages_field = zope.schema.Choice(title=u'Language',
>>> languages = iter(languages_field.source)
>>> afar =
>>> abkhazian =


First we fetch a specific country:

>>> countries = list(iter(countries_field.source))
>>> germany = countries[80]

The i18n translate method translates ‘Germany’ into german:

>>> zope.i18n.translate(, target_language='de')

Translations are also operating for scripts, currencies and languages.


Countries, scripts, currenties and languages can be compared to equality. To test this, we will need another country object afghanistan, which is not the same object as retrieved before:

>>> countries = iter(countries_field.source)
>>> afghanistan =
>>> countries = iter(countries_field.source)
>>> afghanistan2 =
>>> str(afghanistan) == str(afghanistan2)

Comparing them will get the token for each and compare it:

>>> afghanistan == afghanistan2

Pickling and unpickling

It should be possible to store “proxy objects” in a database (like the ZODB). Therefore, they have to be pickleable:

>>> import StringIO
>>> import cPickle
>>> f = StringIO.StringIO('')

Pickling a country should never raise an error…

>>> cPickle.dump(afghanistan, f)

… and results in storing the token in the pickle:

>>> 'AF' in

Reading the pickle again will return the same country which was pickled before:

>>> afghanistan2 = cPickle.load(f)
>>> afghanistan2 == afghanistan


0.3 (2008-05-21)

  • added test for comparing the returned countries to equality

  • added __reduce__ to data objects so that they can be pickled

  • added tests for pickling and unpickling data objects

0.2 (2008-05-20)

  • now returns special data objects instead of pycountry objects for a better object-oriented purpose and flexibility in handling the result

  • improved configure.zcml and added functional tests for the i18n translations

  • improved test cases in general

0.1 (2008-05-20)

  • initial release

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