diff --git a/Week02/weighted_batuhan_keskin.py b/Week02/weighted_batuhan_keskin.py
new file mode 100644
index 00000000..6ced0192
--- /dev/null
+++ b/Week02/weighted_batuhan_keskin.py
@@ -0,0 +1,6 @@
+import random
+
+def weighted_srs(data, n, weights, with_replacement=False):
+    if with_replacement: return random.choices(data, weights=weights, k=n) # sample with replacement
+    if not weights: return random.sample(data, n) # simple random sample without weights
+    return random.sample(data, n, counts=weights) # sample without replacement using weights as counts