simplify squre

1 A little bit difficult to think what should put into [] i initially defined a new variable. but after read the prompt closely, I found it unnecessary
prompt is helpful.

square.py

@@ -1,16 +1,15 @@
 from turtle import *
 
 def square(side_length):
-    forward(side_length)
-    right(90)
-    forward(side_length)
-    right(90)
-    forward(side_length)
-    right(90)
-    forward(side_length)
-    right(90)
+    moves = [1,1,1,1]
+    for move in moves:
+        forward(side_length)
+        right(90)
 
-sizes = [20, 40, 60, 80, 100]
+sizes = [20,40,60,80,100]
 for size in sizes:
-    square(size)
+    square(40)
+    penup()
+    forward(40)
+    pendown()