diff --git a/tracefoo_mag.py b/tracefoo_mag.py
new file mode 100644
index 0000000..22d5dbc
--- /dev/null
+++ b/tracefoo_mag.py
@@ -0,0 +1,14 @@
+import sys
+
+
+def tracefoo(userfunc):
+    global nameofuserfunc
+    nameofuserfunc = userfunc.__name__
+    sys.settrace(tracefunc)
+
+
+def tracefunc(frame, event, arg):
+    if event == "return" and frame.f_code.co_name == nameofuserfunc:
+        print("function:", frame.f_code.co_name, ", local vars:", list(frame.f_locals.keys()))
+    return tracefunc
+