diff --git a/Week04/decorators_nazmi_emir_ozer.py b/Week04/decorators_nazmi_emir_ozer.py
new file mode 100644
index 00000000..8d75c35a
--- /dev/null
+++ b/Week04/decorators_nazmi_emir_ozer.py
@@ -0,0 +1,25 @@
+import time
+import tracemalloc
+
+def performance(fn):
+    def wrapper(*args, **kwargs):
+        performance.counter += 1
+
+        tracemalloc.start()
+        start = time.perf_counter()
+
+        result = fn(*args, **kwargs)
+
+        end = time.perf_counter()
+        _ ,peak = tracemalloc.get_traced_memory()
+        tracemalloc.stop()
+
+        performance.total_time += end - start
+        performance.total_mem= peak
+        return result
+    return wrapper
+
+performance.counter=0
+performance.total_time=0
+performance.total_mem=0
+