diff --git a/Week03/weighted_ozgun_kasapoglu.py b/Week03/weighted_ozgun_kasapoglu.py
new file mode 100644
index 0000000..9f1efcd
--- /dev/null
+++ b/Week03/weighted_ozgun_kasapoglu.py
@@ -0,0 +1,9 @@
+import random
+
+
+def weighted_srs(data, n, weights, with_replacement = False):
+
+    if with_replacement:
+        return random.choices(data, weights=weights, k=n)
+    else:
+        return random.sample(data, n)