update shared dependencies

Shared/lib/python3.4/site-packages/stdnum/de/wkn.py

@@ -0,0 +1,74 @@
+# wkn.py - functions for handling Wertpapierkennnummer
+# coding: utf-8
+#
+# Copyright (C) 2015 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
+
+"""Wertpapierkennnummer (German securities identification code).
+
+The WKN, WPKN, WPK (Wertpapierkennnummer) is a German code to identify
+securities. It is a 6-digit alphanumeric number without a check digit that no
+longer has any structure. It is expected to be replaced by the ISIN.
+
+>>> validate('A0MNRK')
+'A0MNRK'
+>>> validate('AOMNRK')  # no capital o allowed
+Traceback (most recent call last):
+    ...
+InvalidFormat: ...
+>>> to_isin('SKWM02')
+'DE000SKWM021'
+"""
+
+from stdnum.exceptions import *
+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."""
+    return clean(number, ' ').strip().upper()
+
+
+# O and I are not valid but are accounted for in the check digit calculation
+_alphabet = '0123456789ABCDEFGH JKLMN PQRSTUVWXYZ'
+
+
+def validate(number):
+    """Checks to see if the number provided is valid. This checks the length
+    and check digit."""
+    number = compact(number)
+    if not all(x in _alphabet for x in number):
+        raise InvalidFormat()
+    if len(number) != 6:
+        raise InvalidLength()
+    return number
+
+
+def is_valid(number):
+    """Checks to see if the number provided is valid. This checks the length
+    and check digit."""
+    try:
+        return bool(validate(number))
+    except ValidationError:
+        return False
+
+
+def to_isin(number):
+    """Convert the number to an ISIN."""
+    from stdnum import isin
+    return isin.from_natid('DE', number)