diff --git a/Week04/decorators_efe_samil_sarigul.py b/Week04/decorators_efe_samil_sarigul.py
new file mode 100644
index 00000000..15d5135d
--- /dev/null
+++ b/Week04/decorators_efe_samil_sarigul.py
@@ -0,0 +1,22 @@
+import time
+import tracemalloc
+
+
+def performance(func):
+    def _performance(*args, **kwargs):
+        performance.counter += 1
+        tracemalloc.start()
+        start = time.perf_counter()
+        result = func(*args, **kwargs)
+        end = time.perf_counter()
+        current, peak = tracemalloc.get_traced_memory()
+        tracemalloc.stop()
+        performance.total_time += end - start
+        performance.total_mem += peak
+        return result
+    return _performance
+
+
+performance.counter = 0
+performance.total_time = 0
+performance.total_mem = 0