diff --git a/dependency_injector/errors.py b/dependency_injector/errors.py
index 69aa283e..0d56b02b 100644
--- a/dependency_injector/errors.py
+++ b/dependency_injector/errors.py
@@ -6,3 +6,5 @@ class Error(Exception):
 
     All dependency injector errors extend this error class.
     """
+
+print(__file__, __name__)