diff --git a/sub_package/__init__.py b/sub_package/__init__.py
index ce28e69..50b3846 100644
--- a/sub_package/__init__.py
+++ b/sub_package/__init__.py
@@ -3,3 +3,4 @@ from .sub import sub_func
 __all__ = ["sub_func"]
 
 print("__sub_pacakge__.__init__")
+print('__name__#__init__', __name__)
diff --git a/sub_package/sub.py b/sub_package/sub.py
index 7789b5d..55362cd 100644
--- a/sub_package/sub.py
+++ b/sub_package/sub.py
@@ -1,3 +1,4 @@
 
 def sub_func():
     print("call: sub_func")
+    print('__name__#sub.py', __name__)