python-stdnum commit: r113 - python-stdnum/stdnum

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

Author: arthur
Date: Sat Feb 11 15:43:55 2012
New Revision: 113
URL: http://arthurdejong.org/viewvc/python-stdnum?revision=113&view=revision

Log:
implement a digitsum() function to find the sub of all digits in a number

Modified:
   python-stdnum/stdnum/util.py

Modified: python-stdnum/stdnum/util.py
==============================================================================
--- python-stdnum/stdnum/util.py        Sat Feb 11 15:37:28 2012        (r112)
+++ python-stdnum/stdnum/util.py        Sat Feb 11 15:43:55 2012        (r113)
@@ -17,13 +17,23 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301 USA
 
-"""Common functions for other stdnum modules.
-
->>> clean('123-456:78 9', ' -:')
-'123456789'
-"""
+"""Common functions for other stdnum modules."""
 
 
 def clean(number, deletechars):
-    """Remove the specified characters from the supplied number."""
+    """Remove the specified characters from the supplied number.
+
+    >>> clean('123-456:78 9', ' -:')
+    '123456789'
+    """
     return ''.join(x for x in number if x not in deletechars)
+
+
+def digitsum(numbers):
+    """Returns the sum of the individual digits of the provided numbers.
+
+    >>> digitsum([12, 55])
+    13
+    """
+    # note: this only works for two-digit numbers
+    return sum((x // 10) + (x % 10) for x in numbers)
-- 
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