diff --git a/Week03/weighted_yaseminbuse_kirtepe.py b/Week03/weighted_yaseminbuse_kirtepe.py
new file mode 100644
index 0000000..144ed18
--- /dev/null
+++ b/Week03/weighted_yaseminbuse_kirtepe.py
@@ -0,0 +1,7 @@
+import random
+
+def weighted_srs(data, n, weights, with_replacement):
+    if with_replacement:
+        return random.choices(data, weights=weights, k=n)
+    else:
+        return random.sample(data, k=n)