python-stdnum commit: r115 - in python-stdnum: . stdnum stdnum/es tests

[Commits of the python-stdnum project <python-stdnum-commits [at] lists.arthurdejong.org>]

Author: arthur
Date: Sat Feb 11 15:50:11 2012
New Revision: 115
URL: http://arthurdejong.org/viewvc/python-stdnum?revision=115&view=revision

Log:
add a NIF (Número de Identificación Fiscal, Spanish VAT number) module

Added:
   python-stdnum/stdnum/es/nif.py
Modified:
   python-stdnum/README
   python-stdnum/stdnum/__init__.py
   python-stdnum/tests/test_robustness.doctest

Modified: python-stdnum/README
==============================================================================
--- python-stdnum/README        Sat Feb 11 15:44:35 2012        (r114)
+++ python-stdnum/README        Sat Feb 11 15:50:11 2012        (r115)
@@ -29,6 +29,7 @@
  * DNI (Documento nacional de identidad, Spanish personal identity codes)
  * NIE (Número de Identificación de Extranjeros, Spanish identification number
    for foreigners)
+ * NIF (Número de Identificación Fiscal, Spanish VAT number)
  * FPA, ΦΠΑ (Foros Prostithemenis Aksias, the Greek VAT number)
  * Ust ID Nr. (Umsatzsteur Identifikationnummer, the German VAT number)
  * BTW, TVA, NWSt (Belgian VAT number)

Modified: python-stdnum/stdnum/__init__.py
==============================================================================
--- python-stdnum/stdnum/__init__.py    Sat Feb 11 15:44:35 2012        (r114)
+++ python-stdnum/stdnum/__init__.py    Sat Feb 11 15:50:11 2012        (r115)
@@ -43,6 +43,7 @@
  * DNI (Documento nacional de identidad, Spanish personal identity codes)
  * NIE (Número de Identificación de Extranjeros, Spanish identification number
    for foreigners)
+ * NIF (Número de Identificación Fiscal, Spanish VAT number)
  * FPA, ΦΠΑ (Foros Prostithemenis Aksias, the Greek VAT number)
  * Ust ID Nr. (Umsatzsteur Identifikationnummer, the German VAT number)
  * BTW, TVA, NWSt (Belgian VAT number)

Added: python-stdnum/stdnum/es/nif.py
==============================================================================
--- /dev/null   00:00:00 1970   (empty, because file is newly added)
+++ python-stdnum/stdnum/es/nif.py      Sat Feb 11 15:50:11 2012        (r115)
@@ -0,0 +1,71 @@
+# nif.py - functions for handling Spanish NIF (VAT) numbers
+# coding: utf-8
+#
+# Copyright (C) 2012 Arthur de Jong
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
+
+"""Module for handling Spanish VAT (NIF, Número de Identificación Fiscal)
+numbers. It is a 9 digit number where either the first, last digits or
+both can be letters.
+
+The number is either a DNI (Documento nacional de identidad, for
+Spaniards), a NIE (Número de Identificación de Extranjeros, for
+foreigners) or a CIF (Certificado de Identificación Fiscal, for legal
+entities and others).
+
+>>> compact('ES B-58378431')
+'B58378431'
+>>> is_valid('B64717838')
+True
+>>> is_valid('B64717839')  # invalid check digit
+False
+>>> is_valid('54362315K')  # resident
+True
+>>> is_valid('X-5253868-R')  # foreign person
+True
+"""
+
+from stdnum.util import clean
+from stdnum.es import dni, nie, cif
+
+
+def compact(number):
+    """Convert the number to the minimal representation. This strips the
+    number of any valid separators and removes surrounding whitespace."""
+    number = clean(number, ' -').upper().strip()
+    if number.startswith('ES'):
+        number = number[2:]
+    return number
+
+
+def is_valid(number):
+    """Checks to see if the number provided is a valid VAT number. This checks
+    the length, formatting and check digit."""
+    try:
+        number = compact(number)
+    except:
+        return False
+    if len(number) != 9 or not number[1:-1].isdigit():
+        return False
+    if number[0].isdigit():
+        # natural resident
+        return dni.is_valid(number)
+    if number[0] in 'XYZ':
+        # foreign natural person
+        return nie.is_valid(number)
+    # otherwise it has to be a valid CIF
+    return cif.is_valid(number)

Modified: python-stdnum/tests/test_robustness.doctest
==============================================================================
--- python-stdnum/tests/test_robustness.doctest Sat Feb 11 15:44:35 2012        
(r114)
+++ python-stdnum/tests/test_robustness.doctest Sat Feb 11 15:50:11 2012        
(r115)
@@ -30,7 +30,7 @@
 >>> from stdnum.br import cpf
 >>> from stdnum.cz import rc
 >>> from stdnum.de import vat as de_vat
->>> from stdnum.es import cif, dni, nie
+>>> from stdnum.es import cif, dni, nie, nif
 >>> from stdnum.fi import hetu
 >>> from stdnum.fr import siren
 >>> from stdnum.gr import vat as gr_vat
-- 
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