I finsished the first checkpoint in iteration labs

square.py

@@ -12,6 +12,9 @@ def square(side_length):
 
 sizes = [20, 40, 60, 80, 100]
 for size in sizes:
-    square(size)
+    square(20)
+    penup()
+    forward(40)
+    pendown()
 input()