Draw Star Using Turtle Graphics-Python

Python's Turtle module offers a fun and interactive way to create graphics by controlling a turtle (pen) to draw on the screen. In this article, we will learn how to use Turtle to draw a simple star. Some commonly used methods are:

• forward(length) moves the pen in the forward direction by x unit.
• backward(length) moves the pen in the backward direction by x unit.
• right(angle) rotate the pen in the clockwise direction by an angle x.
• left(angle) rotate the pen in the anticlockwise direction by an angle x.
• penup() stop drawing of the turtle pen.
• pendown() start drawing of the turtle pen.

Steps to Draw a Star

Let’s go through these steps to implement this in Python:

• First import turtle module in the idle or editor you are using.

import turtle

• Get a screen board on which turtle will draw.

ws=turtle.Screen()

A screen like this will appear:-

• Define an instance for turtle.
• For a drawing, a Star executes a loop 5 times.
• In every iteration move the turtle 100 units forward and move it right 144 degrees.
• This will make up an angle 36 degrees inside a star.
• 5 iterations will make up a Star perfectly.

Below is the python implementation of the above approach.

import turtle

scr = turtle.Screen()
t = turtle.Turtle()

for i in range(5):
    t.forward(100) 
    t.right(144)    

Output

Explanation:

• turtle.Screen() creates the drawing window for the turtle.
• t = turtle.Turtle() creates the turtle object, which will act as the pen for drawing.
• For loop runs 5 times, with t.forward(100) moving the turtle 100 units forward and t.right(144) turning it by 144 degrees to draw the star's points.

Let’s draw a more colorful and styled version of the star using a color list and pen positioning.

import turtle

scr = turtle.Screen()
clr = ['red', 'green', 'blue', 'yellow', 'purple']

turtle.pensize(4)
turtle.penup()
turtle.setpos(-90, 30)
turtle.pendown()
for i in range(5):
    turtle.pencolor(clr[i])
    turtle.forward(200)
    turtle.right(144)

turtle.penup()
turtle.setpos(80, -140)
turtle.pendown()
turtle.pencolor("black")

turtle.done()

Output

Explanation:

• Initializes the drawing window with turtle.Screen() and sets the pen size to 4. The pen is moved to position (-90, 30).
• For loop runs 5 times, changing the pen color with turtle.pencolor(clr[i]) and drawing each point using turtle.forward(200) and turtle.right(144).
• After the star, the pen moves to (80, -140) and changes color to black with turtle.pencolor("black").