Draw Rainbow using Turtle Graphics in Python (original) (raw)

Last Updated : 15 Jul, 2025

Turtle is an inbuilt module in Python. It provides:

1. Drawing using a screen (cardboard).
2. Turtle (pen).

To draw something on the screen, we need to move the turtle (pen), and to move the turtle, there are some functions like the forward(), backward(), etc.

Prerequisite: Turtle Programming Basics

Draw Rainbow Using Turtle Graphics

In this section, we will discuss how to draw a Rainbow using two different ways using Turtle Graphics.

Approach:

1. Import Turtle.
2. Set screen
3. Make Turtle Object
4. Define colors used for drawing
5. Loop to draw semi-circles oriented by 180-degree position.

Example 1:

python3 `

Import turtle package

import turtle

Creating a turtle screen object

sc = turtle.Screen()

Creating a turtle object(pen)

pen = turtle.Turtle()

Defining a method to form a semicircle

with a dynamic radius and color

def semi_circle(col, rad, val):

# Set the fill color of the semicircle
pen.color(col)

# Draw a circle
pen.circle(rad, -180)

# Move the turtle to air
pen.up()

# Move the turtle to a given position
pen.setpos(val, 0)

# Move the turtle to the ground
pen.down()

pen.right(180)

Set the colors for drawing

col = ['violet', 'indigo', 'blue', 'green', 'yellow', 'orange', 'red']

Setup the screen features

sc.setup(600, 600)

Set the screen color to black

sc.bgcolor('black')

Setup the turtle features

pen.right(90) pen.width(10) pen.speed(7)

Loop to draw 7 semicircles

for i in range(7): semi_circle(col[i], 10*( i + 8), -10*(i + 1))

Hide the turtle

pen.hideturtle()

`

Output:

Example 2:

Python3 `

import turtle

mypen= turtle.Turtle() mypen.shape('turtle') mypen.speed(10)

window= turtle.Screen() window.bgcolor('white') rainbow= ['red','orange','yellow','green','blue','indigo','violet'] size= 180 mypen.penup() mypen.goto(0,-180) for color in rainbow: mypen.color(color) mypen.fillcolor(color) mypen.begin_fill() mypen.circle(size) mypen.end_fill() size-=20

turtle.done()

`