--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/contrib/localflavor/uy/util.py	Tue May 25 02:43:45 2010 +0200
@@ -0,0 +1,12 @@
+# -*- coding: utf-8 -*-
+
+def get_validation_digit(number):
+    """ Calculates the validation digit for the given number. """
+    sum = 0
+    dvs = [4, 3, 6, 7, 8, 9, 2]
+    number = str(number)
+
+    for i in range(0, len(number)):
+        sum = (int(number[-1 - i]) * dvs[i] + sum) % 10
+
+    return (10-sum) % 10