diff --git a/Week03/weighted_batuhan_bicen.py b/Week03/weighted_batuhan_bicen.py
new file mode 100644
index 0000000..d8cb707
--- /dev/null
+++ b/Week03/weighted_batuhan_bicen.py
@@ -0,0 +1,6 @@
+import random
+
+def weighted_srs(data, n, weights, with_replacement):
+    return random.choices(data, weights, k=n) if with_replacement else random.sample(data, n)
+
+