diff --git a/list.for.py b/list.for.py
new file mode 100644
index 0000000..5e56f86
--- /dev/null
+++ b/list.for.py
@@ -0,0 +1,4 @@
+a = [2, 5, 1, 9, 10]
+for i in range(len(a)):
+    a[i] *= a[i]
+print(a)