The_Official_Raspberry_Pi_-_Beginner’s_Book_Vol1,_2018 (1)

104 THE OFFICIAL RASPBERRY PI BEGINNER'S GUIDE

To turn that into a snowflake-like shape, click the Stop icon in the main Thonny window and

create a loop around your loop by adding the following line as line 3:

for i in range( 10 ):

...and the following at the bottom of your program:

pat.right( 36 )

Your program won’t run as it is, because the existing loop isn’t indented correctly. To fix that,

click on the start of each line in the existing loop – lines 4 through 8 – and press the SPACE

key four times to correct the indentation. Your program should now look like this:

import turtle

pat = turtle.Turtle()

for i in range( 10 ):

for i in range( 2 ):

pat.forward( 100 )

pat.right( 60 )

pat.forward( 100 )

pat.right( 120 )

pat.right( 36 )

Click the Run icon, and watch the turtle: it’ll draw a parallelogram, as before, but when

it’s done it’ll turn 36 degrees and draw another, then another, and so on until there are ten

overlapping parallelograms on the screen – looking a little like a snowflake (Figure 5-10).

5 Figure 5-10: Repeating the shape to make a more complex one