Added note about not memoizing __iter__.

ghosthamlet · Dec 15, 2011 · f5c3f1f · f5c3f1f
1 parent fb4961e
commit f5c3f1f
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/powerseries.py b/powerseries.py
@@ -187,6 +187,11 @@ def __iter__(self):
         
         This makes a ``PowerSeries`` an iterable, which combined with the
         properties below makes the notation simple.
+        
+        Note that we do *not* memoize this method directly; we factor out
+        the memoized generator and just realize it here. This is because
+        ``__iter__`` is a special method that is handled differently by
+        Python, so decorators don't work properly with it.
         """
         return self._gen()