Merge pull request #154 from MarkDana/patch-for-endpoint-comparison

Endpoint comparison: check only for Endpoint instances

Author: kunwuz

causallearn/graph/Endpoint.py

@@ -20,4 +20,4 @@ def __str__(self):
         return self.name
 
     def __eq__(self, other):
-        return self.value == other.value
+        return isinstance(other, Endpoint) and self.value == other.value