diff --git a/Week02/weighted_keremcagan_ulver.py b/Week02/weighted_keremcagan_ulver.py
new file mode 100644
index 00000000..0af39e27
--- /dev/null
+++ b/Week02/weighted_keremcagan_ulver.py
@@ -0,0 +1,8 @@
+import random
+def weighted_srs(data, n, weights, *, with_replacement=False):
+    if with_replacement: return random.choices(data, weights=weights, k=n)
+    res, w = [], list(weights)
+    for _ in range(n):
+        idx = random.choices(range(len(data)), weights=w)[0]
+        res.append(data[idx]); w[idx] = 0
+    return res