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|
import six
from sqlalchemy_utils import i18n
from sqlalchemy_utils.utils import str_coercible
@str_coercible
class Country(object):
"""
Country class wraps a 2 to 3 letter country code. It provides various
convenience properties and methods.
::
from babel import Locale
from sqlalchemy_utils import Country, i18n
# First lets add a locale getter for testing purposes
i18n.get_locale = lambda: Locale('en')
Country('FI').name # Finland
Country('FI').code # FI
Country(Country('FI')).code # 'FI'
Country always validates the given code.
::
Country(None) # raises TypeError
Country('UnknownCode') # raises ValueError
Country supports equality operators.
::
Country('FI') == Country('FI')
Country('FI') != Country('US')
Country objects are hashable.
::
assert hash(Country('FI')) == hash('FI')
"""
def __init__(self, code_or_country):
if isinstance(code_or_country, Country):
self.code = code_or_country.code
elif isinstance(code_or_country, six.string_types):
self.validate(code_or_country)
self.code = code_or_country
else:
raise TypeError(
"Country() argument must be a string or a country, not '{0}'"
.format(
type(code_or_country).__name__
)
)
@property
def name(self):
return i18n.get_locale().territories[self.code]
@classmethod
def validate(self, code):
try:
i18n.babel.Locale('en').territories[code]
except KeyError:
raise ValueError(
'Could not convert string to country code: {0}'.format(code)
)
def __eq__(self, other):
if isinstance(other, Country):
return self.code == other.code
elif isinstance(other, six.string_types):
return self.code == other
else:
return NotImplemented
def __hash__(self):
return hash(self.code)
def __ne__(self, other):
return not (self == other)
def __repr__(self):
return '%s(%r)' % (self.__class__.__name__, self.code)
def __unicode__(self):
return self.name
|
