diff --git a/src/python/jw/Makefile b/src/python/jw/Makefile
index 62d684a7..7a283d36 100644
--- a/src/python/jw/Makefile
+++ b/src/python/jw/Makefile
@@ -2,3 +2,9 @@ TOPDIR = ../../..
 
 include $(TOPDIR)/make/proj.mk
 include $(JWBDIR)/make/dirs.mk
+
+all:
+
+clean: py.clean
+py.clean:
+	rm -rf __pycache__
diff --git a/src/python/jw/__init__.py b/src/python/jw/__init__.py
new file mode 100644
index 00000000..e69de29b