diff --git a/operator/operator.py b/operator/operator.py
new file mode 100644
index 00000000..7b8b0998
--- /dev/null
+++ b/operator/operator.py
@@ -0,0 +1,5 @@
+def attrgetter(attr):
+    assert "." not in attr
+    def _attrgetter(obj):
+        return getattr(obj, attr)
+    return _attrgetter