diff --git a/Week04/decorators_alp_ozdemir.py b/Week04/decorators_alp_ozdemir.py
new file mode 100644
index 00000000..b5a7a8cd
--- /dev/null
+++ b/Week04/decorators_alp_ozdemir.py
@@ -0,0 +1,21 @@
+import time
+import tracemalloc
+
+def performance(func):
+    
+    performance.counter = 0
+    performance.total_time = 0
+    performance.total_mem = 0
+    
+    def init(*args,**kwargs):
+        start_time = time.time()
+        tracemalloc.start()
+        res = func(*args,**kwargs)
+        end_time = time.time()
+        n, high = tracemalloc.get_traced_memory()
+        tracemalloc.stop()
+        performance.total_time += end_time - start_time
+        performance.counter += 1
+        performance.total_mem += high
+        return res 
+    return init