diff --git a/Week02/weighted_denizumut_sagiroglu.py b/Week02/weighted_denizumut_sagiroglu.py
new file mode 100644
index 00000000..29692259
--- /dev/null
+++ b/Week02/weighted_denizumut_sagiroglu.py
@@ -0,0 +1,9 @@
+import random
+def weighted_srs(data, n, weights, with_replacement=False):
+    if with_replacement or weights:
+        return random.choices(data, weights=weights, k=n)
+    pool_d, pool_w, sample = list(data), [1]*len(data), []
+    for _ in range(n):
+        i = random.choices(range(len(pool_d)), weights=pool_w, k=1)[0]
+        sample.append(pool_d.pop(i)); pool_w.pop(i)
+    return sample