What is this chunk of code doing? Explain each line in a discussion post with english def drawing (a_turtle, side_len): for i in range (5): a_turtle. forward (side_len) a_turtle.right (144) return None . After, write a program using a for loop that will make an octagon (8 sides) with turtle using a for loop. Call the file octagon.py and attach it to your discussion post! You are not required to respond to a colleague's post, but you are encouraged to! NOTE: If