diff --git a/src/__init__.py b/src/__init__.py
index 6c8aea6d55ca051ec21ab17cec385001cafa8430..4403bb6fc1bd628345ad371f10479e21018ce47c 100644
--- a/src/__init__.py
+++ b/src/__init__.py
@@ -155,6 +155,15 @@ class DependentDictionary(object):
 
 
 
+def len_iterable(iterable):
+    result = 0
+    for i in iterable:
+        result += 1
+    return result
+
+
+
+
 def add_tuples(t1, t2):
     return tuple([t1v + t2v for t1v, t2v in zip(t1, t2)])