Fix method name and improve doc string

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26260 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Utils.py

@@ -265,10 +265,10 @@ def getPath(object_or_path, **kw):
     return path.split('/')
   return path
 
-def int2letters(i):
+def int2letter(i):
   """
   Convert an integer to letters, to generate spreadsheet column id
-  A, B, C ..., Z, AA, AB, ..., AZ, BA, ..., ZZ, AAA ...
+  0=>A, 25=>Z, 26=>AA, 27=>AB, ...
   """
   if i < 26:
     return (chr(i + ord('A')))

product/ERP5Type/__init__.py

@@ -109,7 +109,7 @@ allow_module('Products.ERP5Type.Cache')
 ModuleSecurityInfo('Products.ERP5Type.Utils').declarePublic(
     'sortValueList', 'convertToUpperCase', 'UpperCase',
     'convertToMixedCase', 'cartesianProduct', 'sleep', 'getCommonTimeZoneList',
-    'int2letters',)
+    'int2letter',)
 
 allow_module('Products.ERP5Type.Message')
 ModuleSecurityInfo('Products.ERP5Type.Message').declarePublic('translateString')