From 3941a5f5e128c290b28897487bcdf3b0a84a47c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=9Eekip=20Yaman=20Arslan?=
 <155294621+yamanarslan@users.noreply.github.com>
Date: Tue, 7 Apr 2026 21:41:49 +0300
Subject: [PATCH] Implement performance decorator for function metrics

Added a performance decorator to measure execution time and memory usage.
---
 Week04/decorators_sekip_yaman_arslan.py | 32 +++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 Week04/decorators_sekip_yaman_arslan.py

diff --git a/Week04/decorators_sekip_yaman_arslan.py b/Week04/decorators_sekip_yaman_arslan.py
new file mode 100644
index 00000000..267a4141
--- /dev/null
+++ b/Week04/decorators_sekip_yaman_arslan.py
@@ -0,0 +1,32 @@
+import time
+import tracemalloc as tm
+
+
+def performance(func):
+    """
+    A decorator function that measures the performance of the given function
+    and also saves some statistics.
+    (The definition is from the lecture notes.)
+    """
+    performance.counter = 0
+    performance.total_mem = 0.0
+    performance.total_time = 0.0
+
+    def _performance(*args, **kwargs):
+        tm.start()
+        start_time = time.time()
+
+        result = func(*args, **kwargs)
+
+        _, peak_mem = tm.get_traced_memory()
+        end_time = time.time()
+
+        tm.stop()
+
+        performance.total_time += end_time - start_time
+        performance.total_mem += peak_mem
+        performance.counter += 1
+
+        return result
+
+    return _performance