Fix bool(newlist())

edschofield · edschofield · commit 371020ebf2db · 2014-04-12T14:33:27.000+10:00
diff --git a/future/builtins/types/newlist.py b/future/builtins/types/newlist.py
@@ -67,7 +67,12 @@ def __radd__(self, left):
             return NotImplemented
 
     def __getitem__(self, y):
-        """x.__getitem__(y) <==> x[y]"""
+        """
+        x.__getitem__(y) <==> x[y]
+
+        Warning: a bug in Python 2.x prevents indexing via a slice from
+        returning a newlist object.
+        """
         if isinstance(y, slice):
             return newlist(super(newlist, self).__getitem__(y))
         else:
@@ -79,5 +84,8 @@ def __native__(self):
         """
         return list(self)
 
+    def __nonzero__(self):
+        return len(self) > 0
+
 
 __all__ = ['newlist']
