diff -r 36ff13ea73e9 django/contrib/localflavor/ar/ar_provinces.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/django/contrib/localflavor/ar/ar_provinces.py	Thu Sep 13 21:04:13 2007 -0300
@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+"""
+A list of Argentinean provinces and autonomous cities as `choices` in a
+formfield. From
+http://www.argentina.gov.ar/argentina/portal/paginas.dhtml?pagina=425
+
+This exists in this standalone file so that it's only imported into memory
+when explicitly needed.
+"""
+
+PROVINCE_CHOICES = (
+    ('B', u'Buenos Aires'),
+    ('K', u'Catamarca'),
+    ('H', u'Chaco'),
+    ('U', u'Chubut'),
+    ('C', u'Ciudad Autónoma de Buenos Aires'),
+    ('X', u'Córdoba'),
+    ('W', u'Corrientes'),
+    ('E', u'Entre Ríos'),
+    ('P', u'Formosa'),
+    ('Y', u'Jujuy'),
+    ('L', u'La Pampa'),
+    ('F', u'La Rioja'),
+    ('M', u'Mendoza'),
+    ('N', u'Misiones'),
+    ('Q', u'Neuquén'),
+    ('R', u'Río Negro'),
+    ('A', u'Salta'),
+    ('J', u'San Juan'),
+    ('D', u'San Luis'),
+    ('Z', u'Santa Cruz'),
+    ('S', u'Santa Fe'),
+    ('G', u'Santiago del Estero'),
+    ('V', u'Tierra del Fuego, Antártida e Islas del Atlántico Sur'),
+    ('T', u'Tucumán'),
+)
diff -r 36ff13ea73e9 django/contrib/localflavor/ar/forms.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/django/contrib/localflavor/ar/forms.py	Thu Sep 13 21:04:13 2007 -0300
@@ -0,0 +1,113 @@
+# -*- coding: utf-8 -*-
+"""
+AR-specific Form helpers.
+"""
+
+from django.newforms import ValidationError
+from django.newforms.fields import RegexField, CharField, Select, EMPTY_VALUES
+from django.utils.encoding import smart_unicode
+from django.utils.translation import ugettext
+import re
+
+class ARProvinceSelect(Select):
+    """
+    A Select widget that uses a list of Argentinean provinces/autonomous
+    cities as its choices.
+
+    """
+    def __init__(self, attrs=None):
+        from ar_provinces import PROVINCE_CHOICES
+        super(ARProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES)
+
+
+class ARPostalCodeField(RegexField):
+    """
+    A field that accepts a `classic� NNNN Postal Code or a CPA.
+
+    See http://www.correoargentino.com.ar/consulta_cpa/home.php
+
+    """
+    def __init__(self, *args, **kwargs):
+        super(ARPostalCodeField, self).__init__(r'^\d{4}$|^[A-HJ-NP-Za-hj-np-z]\d{4}\D{3}$',
+            min_length=4, max_length=8,
+            error_message=ugettext("Enter a postal code in the format NNNN or ANNNNAAA."),
+                    *args, **kwargs)
+
+    def clean(self, value):
+        value = super(ARPostalCodeField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        if len(value) not in (4, 8):
+            raise ValidationError(ugettext("Enter a postal code in the format NNNN or ANNNNAAA."))
+        if len(value) == 8:
+            return u'%s%s%s' % (value[0].upper(), value[1:5], value[5:].upper())
+        return value
+
+
+class ARDNIField(CharField):
+    """
+    A field that validates `Documento Nacional de Identidad� (DNI)
+    numbers.
+
+    """
+    def __init__(self, *args, **kwargs):
+        super(ARDNIField, self).__init__(max_length=10, min_length=7, *args,
+                **kwargs)
+
+    def clean(self, value):
+        """
+        Value can be a string either in the [X]X.XXX.XXX or [X]XXXXXXX formats.
+        """
+        value = super(ARDNIField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        if not value.isdigit():
+            value = value.replace('.', '')
+        if not value.isdigit():
+            raise ValidationError(ugettext("This field requires only numbers."))
+        if len(value) not in (7, 8):
+            raise ValidationError(
+                    ugettext("This field requires 7 or 8 digits."))
+
+        return value
+
+
+class ARCUITField(RegexField):
+    """
+    This field validates a CUIT (C�digo �nico de Identificaci�n
+    Tributaria). A CUIT is of the form XX-XXXXXXXX-V. The last digit
+    is a check digit.
+
+    """
+    def __init__(self, *args, **kwargs):
+        super(ARCUITField, self).__init__(r'^\d{2}-?\d{8}-?\d$',
+            error_message=ugettext('Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.'),
+            *args, **kwargs)
+
+    def clean(self, value):
+        """
+        Value can be either a string in the format XX-XXXXXXXX-X or an
+        11-digit number.
+        """
+        value = super(ARCUITField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        value, cd = self._canon(value)
+        if self._calc_cd(value) != cd:
+            raise ValidationError(ugettext("Invalid CUIT."))
+        return self._format(value, cd)
+
+    def _canon(self, cuit):
+        cuit = cuit.replace('-', '')
+        return cuit[:-1], cuit[-1]
+
+    def _calc_cd(self, cuit):
+        mults = (5, 4, 3, 2, 7, 6, 5, 4, 3, 2)
+        tmp = sum([m * int(cuit[idx]) for idx, m in enumerate(mults)])
+        return str(11 - tmp % 11)
+
+    def _format(self, cuit, check_digit=None):
+        if check_digit == None:
+            check_digit = cuit[-1]
+            cuit = cuit[:-1]
+        return u'%s-%s-%s' % (cuit[:2], cuit[2:], check_digit)
diff -r 36ff13ea73e9 tests/regressiontests/forms/localflavor.py
--- a/tests/regressiontests/forms/localflavor.py	Thu Sep 13 19:16:59 2007 -0300
+++ b/tests/regressiontests/forms/localflavor.py	Thu Sep 13 21:04:13 2007 -0300
@@ -1514,4 +1514,294 @@ ValidationError: [u'Enter a valid SoFi n
 >>> s = NLProvinceSelect()
 >>> s.render('provinces', 'OV')
 u'<select name="provinces">\n<option value="DR">Drente</option>\n<option value="FL">Flevoland</option>\n<option value="FR">Friesland</option>\n<option value="GL">Gelderland</option>\n<option value="GR">Groningen</option>\n<option value="LB">Limburg</option>\n<option value="NB">Noord-Brabant</option>\n<option value="NH">Noord-Holland</option>\n<option value="OV" selected="selected">Overijssel</option>\n<option value="UT">Utrecht</option>\n<option value="ZE">Zeeland</option>\n<option value="ZH">Zuid-Holland</option>\n</select>'
+
+# ARProvinceField #############################################################
+
+>>> from django.contrib.localflavor.ar.forms import ARProvinceSelect
+>>> f = ARProvinceSelect()
+>>> f.render('provincias', 'A')
+u'<select name="provincias">\n<option value="B">Buenos Aires</option>\n<option value="K">Catamarca</option>\n<option value="H">Chaco</option>\n<option value="U">Chubut</option>\n<option value="C">Ciudad Aut\xf3noma de Buenos Aires</option>\n<option value="X">C\xf3rdoba</option>\n<option value="W">Corrientes</option>\n<option value="E">Entre R\xedos</option>\n<option value="P">Formosa</option>\n<option value="Y">Jujuy</option>\n<option value="L">La Pampa</option>\n<option value="F">La Rioja</option>\n<option value="M">Mendoza</option>\n<option value="N">Misiones</option>\n<option value="Q">Neuqu\xe9n</option>\n<option value="R">R\xedo Negro</option>\n<option value="A" selected="selected">Salta</option>\n<option value="J">San Juan</option>\n<option value="D">San Luis</option>\n<option value="Z">Santa Cruz</option>\n<option value="S">Santa Fe</option>\n<option value="G">Santiago del Estero</option>\n<option value="V">Tierra del Fuego, Ant\xe1rtida e Islas del Atl\xe1ntico Sur</option>\n<option value="T">Tucum\xe1n</option>\n</select>'
+
+# ARPostalCodeField ###########################################################
+
+>>> from django.contrib.localflavor.ar.forms import ARPostalCodeField
+>>> f = ARPostalCodeField()
+>>> f.clean('5000')
+u'5000'
+>>> f.clean('C1064AAB')
+u'C1064AAB'
+>>> f.clean('c1064AAB')
+u'C1064AAB'
+>>> f.clean('C1064aab')
+u'C1064AAB'
+>>> f.clean(u'4400')
+u'4400'
+>>> f.clean(u'C1064AAB')
+u'C1064AAB'
+>>> f.clean('C1064AABB')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at most 8 characters (it has 9).']
+>>> f.clean('C1064AA')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean('C106AAB')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean('106AAB')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean('500')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at least 4 characters (it has 3).']
+>>> f.clean('5PPP')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean(None)
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+>>> f.clean('')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+>>> f.clean(u'')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+
+>>> f = ARPostalCodeField(required=False)
+>>> f.clean('5000')
+u'5000'
+>>> f.clean('C1064AAB')
+u'C1064AAB'
+>>> f.clean('c1064AAB')
+u'C1064AAB'
+>>> f.clean('C1064aab')
+u'C1064AAB'
+>>> f.clean(u'4400')
+u'4400'
+>>> f.clean(u'C1064AAB')
+u'C1064AAB'
+>>> f.clean('C1064AABB')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at most 8 characters (it has 9).']
+>>> f.clean('C1064AA')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean('C106AAB')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean('106AAB')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean('500')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure this value has at least 4 characters (it has 3).']
+>>> f.clean('5PPP')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a postal code in the format NNNN or ANNNNAAA.']
+>>> f.clean(None)
+u''
+>>> f.clean('')
+u''
+>>> f.clean(u'')
+u''
+
+# ARDNIField ##################################################################
+
+>>> from django.contrib.localflavor.ar.forms import ARDNIField
+>>> f = ARDNIField()
+>>> f.clean('20123456')
+u'20123456'
+>>> f.clean('20.123.456')
+u'20123456'
+>>> f.clean('9123456')
+u'9123456'
+>>> f.clean('9.123.456')
+u'9123456'
+>>> f.clean(u'20123456')
+u'20123456'
+>>> f.clean(u'20.123.456')
+u'20123456'
+>>> f.clean('20.123456')
+u'20123456'
+>>> f.clean('101234566')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field requires 7 or 8 digits.']
+>>> f.clean('W0123456')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field requires only numbers.']
+>>> f.clean('10,123,456')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field requires only numbers.']
+>>> f.clean(None)
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+>>> f.clean('')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+>>> f.clean(u'')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+
+>>> f = ARDNIField(required=False)
+>>> f.clean('20123456')
+u'20123456'
+>>> f.clean('20.123.456')
+u'20123456'
+>>> f.clean('9123456')
+u'9123456'
+>>> f.clean('9.123.456')
+u'9123456'
+>>> f.clean(u'20123456')
+u'20123456'
+>>> f.clean(u'20.123.456')
+u'20123456'
+>>> f.clean('20.123456')
+u'20123456'
+>>> f.clean('101234566')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field requires 7 or 8 digits.']
+>>> f.clean('W0123456')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field requires only numbers.']
+>>> f.clean('10,123,456')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field requires only numbers.']
+>>> f.clean(None)
+u''
+>>> f.clean('')
+u''
+>>> f.clean(u'')
+u''
+
+# ARCUITField #################################################################
+
+>>> from django.contrib.localflavor.ar.forms import ARCUITField
+>>> f = ARCUITField()
+>>> f.clean('20-10123456-9')
+u'20-10123456-9'
+>>> f.clean(u'20-10123456-9')
+u'20-10123456-9'
+>>> f.clean('27-10345678-4')
+u'27-10345678-4'
+>>> f.clean('20101234569')
+u'20-10123456-9'
+>>> f.clean('27103456784')
+u'27-10345678-4'
+>>> f.clean('2-10123456-9')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('210123456-9')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('20-10123456')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('20-10123456-')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('20-10123456-5')
+Traceback (most recent call last):
+...
+ValidationError: [u'Invalid CUIT.']
+>>> f.clean(u'2-10123456-9')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('27-10345678-1')
+Traceback (most recent call last):
+...
+ValidationError: [u'Invalid CUIT.']
+>>> f.clean(u'27-10345678-1')
+Traceback (most recent call last):
+...
+ValidationError: [u'Invalid CUIT.']
+>>> f.clean(None)
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+>>> f.clean('')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+>>> f.clean(u'')
+Traceback (most recent call last):
+...
+ValidationError: [u'This field is required.']
+
+>>> f = ARCUITField(required=False)
+>>> f.clean('20-10123456-9')
+u'20-10123456-9'
+>>> f.clean(u'20-10123456-9')
+u'20-10123456-9'
+>>> f.clean('27-10345678-4')
+u'27-10345678-4'
+>>> f.clean('20101234569')
+u'20-10123456-9'
+>>> f.clean('27103456784')
+u'27-10345678-4'
+>>> f.clean('2-10123456-9')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('210123456-9')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('20-10123456')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('20-10123456-')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('20-10123456-5')
+Traceback (most recent call last):
+...
+ValidationError: [u'Invalid CUIT.']
+>>> f.clean(u'2-10123456-9')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid CUIT in XX-XXXXXXXX-X or XXXXXXXXXXXX format.']
+>>> f.clean('27-10345678-1')
+Traceback (most recent call last):
+...
+ValidationError: [u'Invalid CUIT.']
+>>> f.clean(u'27-10345678-1')
+Traceback (most recent call last):
+...
+ValidationError: [u'Invalid CUIT.']
+>>> f.clean(None)
+u''
+>>> f.clean('')
+u''
+>>> f.clean(u'')
+u''
 """
