Modified square.py to use a for loop in order to simplify the code block.

1) I think coming from for loops in JS makes python for loops
loops look a little weird sometime. But also utilizing list items as distances for Turtle is really cool, I didnt even think of that,
im wondering if you could do the same on JS. It just looks a little different and obviously there are different use cases.

2)

square.py

@@ -1,16 +1,14 @@
 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)
+    for i in range(4):
+        forward(side_length)
+        left(90)
+        #forward(side_length)
 
 sizes = [20, 40, 60, 80, 100]
 for size in sizes:
     square(size)
 
+done()