diff --git a/Week02/weighted_kayra_basar_karadeniz b/Week02/weighted_kayra_basar_karadeniz
new file mode 100644
index 00000000..460f0420
--- /dev/null
+++ b/Week02/weighted_kayra_basar_karadeniz
@@ -0,0 +1,8 @@
+import random
+def weighted_srs(data, n, weights, with_replacement=False):
+    alz, veriler, xy = [], list(data), list(weights) if weights else [1]*len(data)
+    for _ in range(n):
+        idx = random.choices(range(len(veriler)), weights=xy)[0]
+        alz.append(veriler[idx] if with_replacement else veriler.pop(idx))
+        if not with_replacement: xy.pop(idx)
+    return alz