python-stdnum commit: r135 - in python-stdnum: . stdnum stdnum/ee tests

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

Author: arthur
Date: Fri Feb 17 17:15:53 2012
New Revision: 135
URL: http://arthurdejong.org/viewvc/python-stdnum?revision=135&view=revision

Log:
add a KMKR (Käibemaksukohuslase, Estonian VAT number) module

Added:
   python-stdnum/stdnum/ee/
   python-stdnum/stdnum/ee/__init__.py
   python-stdnum/stdnum/ee/kmkr.py
Modified:
   python-stdnum/README
   python-stdnum/stdnum/__init__.py
   python-stdnum/tests/test_robustness.doctest

Modified: python-stdnum/README
==============================================================================
--- python-stdnum/README        Fri Feb 17 17:10:02 2012        (r134)
+++ python-stdnum/README        Fri Feb 17 17:15:53 2012        (r135)
@@ -48,6 +48,7 @@
  * DIČ (Daňové identifikační číslo, Czech VAT number)
  * VAT (Irish VAT number)
  * ANUM (Közösségi adószám, Hungarian VAT number)
+ * KMKR (Käibemaksukohuslase, Estonian VAT number)
  * IMEI (International Mobile Equipment Identity)
  * IMSI (International Mobile Subscriber Identity)
  * MEID (Mobile Equipment Identifier)

Modified: python-stdnum/stdnum/__init__.py
==============================================================================
--- python-stdnum/stdnum/__init__.py    Fri Feb 17 17:10:02 2012        (r134)
+++ python-stdnum/stdnum/__init__.py    Fri Feb 17 17:15:53 2012        (r135)
@@ -62,6 +62,7 @@
  * DIČ (Daňové identifikační číslo, Czech VAT number)
  * VAT (Irish VAT number)
  * ANUM (Közösségi adószám, Hungarian VAT number)
+ * KMKR (Käibemaksukohuslase, Estonian VAT number)
  * IMEI (International Mobile Equipment Identity)
  * IMSI (International Mobile Subscriber Identity)
  * MEID (Mobile Equipment Identifier)

Added: python-stdnum/stdnum/ee/__init__.py
==============================================================================

Added: python-stdnum/stdnum/ee/kmkr.py
==============================================================================
--- /dev/null   00:00:00 1970   (empty, because file is newly added)
+++ python-stdnum/stdnum/ee/kmkr.py     Fri Feb 17 17:15:53 2012        (r135)
@@ -0,0 +1,56 @@
+# kmkr.py - functions for handling Estonian 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 Estonian KMKR (Käibemaksukohuslase, VAT) numbers.
+
+>>> compact('EE 100 931 558')
+'100931558'
+>>> is_valid('100594102')
+True
+>>> is_valid('100594103')  # incorrect check digit
+False
+"""
+
+from stdnum.util import clean
+
+
+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('EE'):
+        number = number[2:]
+    return number
+
+
+def checksum(number):
+    """Calculate the checksum."""
+    weights = (3, 7, 1, 3, 7, 1, 3, 7, 1)
+    return sum(weights[i] * int(n) for i, n in enumerate(number)) % 10
+
+
+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
+    return number.isdigit() and len(number) == 9 and checksum(number) == 0

Modified: python-stdnum/tests/test_robustness.doctest
==============================================================================
--- python-stdnum/tests/test_robustness.doctest Fri Feb 17 17:10:02 2012        
(r134)
+++ python-stdnum/tests/test_robustness.doctest Fri Feb 17 17:15:53 2012        
(r135)
@@ -33,6 +33,7 @@
 >>> from stdnum.cz import dic, rc
 >>> from stdnum.de import vat as de_vat
 >>> from stdnum.dk import cvr
+>>> from stdnum.ee import kmkr
 >>> from stdnum.es import cif, dni, nie, nif as es_nif
 >>> from stdnum.fi import hetu, alv
 >>> from stdnum.fr import siren
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