diff --git a/output/.gitignore b/output/.gitignore
new file mode 100644
index 0000000..5c89ded
--- /dev/null
+++ b/output/.gitignore
@@ -0,0 +1 @@
+*.ifc
diff --git a/output/README.md b/output/README.md
new file mode 100644
index 0000000..22e0f66
--- /dev/null
+++ b/output/README.md
@@ -0,0 +1 @@
+# Output
diff --git a/python/Makefile b/python/Makefile
new file mode 100644
index 0000000..522bead
--- /dev/null
+++ b/python/Makefile
@@ -0,0 +1,12 @@
+# https://stackoverflow.com/questions/6273608/how-to-pass-argument-to-makefile-from-command-line
+args = `arg="$(filter-out $@,$(MAKECMDGOALS))" && echo $${arg:-${1}}`
+create:
+	python3 create.py
+extract:
+	python3 extract.py $(call args,none)
+arguments:
+	@echo action $(filter-out $@,$(MAKECMDGOALS))
+test:
+	@echo $(call args, default)
+%:      # thanks to chakrit
+	@:    # thanks to William Pursell
diff --git a/python/extract.py b/python/extract.py
index 7c0b334..f49d90a 100644
--- a/python/extract.py
+++ b/python/extract.py
@@ -67,22 +67,21 @@ def create(name,objects):
         print("adding",item)
         run("spatial.assign_container", model, relating_structure=storey, product=item)
 
-
     model.write(name)
 
 if len(sys.argv) > 1:
     arg = sys.argv[1]
     print(f">> filename:{arg}")
     if (arg == "list"):
-        print(os.listdir("./files"))
-    p = "./files/" + arg + ".ifc"
+        print(os.listdir("../ifc"))
+    p = "../ifc/" + arg + ".ifc"
     if os.path.exists(p):
         model = load_model(p)
         lst = get_walls(model)
         select(model,"IfcBuildingStorey")
-        create("test.ifc",lst)
+        create("../output/test.ifc",lst)
     else:
-        print(os.listdir("./files"))
+        print(os.listdir("../ifc"))
 
 else:
     print("extract [filepath]")