diff --git a/Week04/custom_power_gamze_kilinc.py b/Week04/custom_power_gamze_kilinc.py
new file mode 100644
index 00000000..a72f3385
--- /dev/null
+++ b/Week04/custom_power_gamze_kilinc.py
@@ -0,0 +1 @@
+custom_power = lambda x=0, /, e=1: x ** e