diff --git a/09-closure-deco/registration_param_1.py b/09-closure-deco/registration_param_1.py
new file mode 100644
index 0000000..31209da
--- /dev/null
+++ b/09-closure-deco/registration_param_1.py
@@ -0,0 +1,26 @@
+# tag::REGISTRATION_PARAM[]
+
+registry = dict()  # <1>
+
+def register(key):  # <2>
+    def decorate(func):  # <3>
+        print('running register'
+              f'(key={key})->decorate({func})')
+        registry[key] = func
+        return func  # <6>
+    return decorate  # <7>
+
+@register('key1')  # <8>
+def f1():
+    print('key1')
+
+@register('key2')  # <9>
+def f2():
+    print('key2')
+
+def f3():
+    print('running f3()')
+
+# end::REGISTRATION_PARAM[]
+if __name__ == "__main__":
+    print(registry)
\ No newline at end of file
diff --git a/09-closure-deco/registration_param_2_main.py b/09-closure-deco/registration_param_2_main.py
new file mode 100644
index 0000000..6ee16d8
--- /dev/null
+++ b/09-closure-deco/registration_param_2_main.py
@@ -0,0 +1,8 @@
+# tag::REGISTRATION_PARAM[]
+
+from registration_param_2_module_registry import registry
+import registration_param_2_module_funcs    # Note: need this import to register funcs in registration_param_2_module_funcs.py
+
+# end::REGISTRATION_PARAM[]
+if __name__ == "__main__":
+    print(registry)
diff --git a/09-closure-deco/registration_param_2_module_funcs.py b/09-closure-deco/registration_param_2_module_funcs.py
new file mode 100644
index 0000000..fe8a427
--- /dev/null
+++ b/09-closure-deco/registration_param_2_module_funcs.py
@@ -0,0 +1,15 @@
+from registration_param_2_module_registry import register
+
+
+@register('key1')  # <8>
+def f1():
+    print('key1')
+
+
+@register('key2')  # <9>
+def f2():
+    print('key2')
+
+
+def f3():
+    print('running f3()')
diff --git a/09-closure-deco/registration_param_2_module_registry.py b/09-closure-deco/registration_param_2_module_registry.py
new file mode 100644
index 0000000..1b52778
--- /dev/null
+++ b/09-closure-deco/registration_param_2_module_registry.py
@@ -0,0 +1,12 @@
+# tag::REGISTRATION_PARAM[]
+
+registry = dict()  # <1>
+
+def register(key):  # <2>
+    def decorate(func):  # <3>
+        print('running register'
+              f'(key={key})->decorate({func})')
+        registry[key] = func
+        return func  # <6>
+    return decorate  # <7>
+