more on organize.person's age attribute

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1209 fd906abe-77d9-0310-91a1-e0d9ade77398

organize/README.txt

@@ -18,12 +18,15 @@ Let's start with a Person:
 
 A Person object knows the age of the person:
   
-  >>> john.age
-
+  >>> john.age is None
+  True
   >>> from datetime import date
   >>> john.birthDate = date(1980, 3, 25)
-  >>> john.age
+  >>> now = date(2006, 5, 12)
+  >>> john.ageAt(now)
   26
+  >>> john.age >= 26
+  True
 
   >>> john.firstName = u'John'
   >>> john.firstName

organize/party.py

@@ -45,9 +45,12 @@ class Person(object):
 
     @property
     def age(self):
+        return self.ageAt(date.today())
+
+    def ageAt(self, date):
         if self.birthDate is None:
             return None
-        return int((date.today() - self.birthDate).days/365.25)
+        return int((date - self.birthDate).days/365.25)
 
 
 class Address(object):