Draw rainbow using turtle graphics in python python

turtle graphics is a popular way to introduce programming to kids and beginners. it provides a visual way of understanding how code can control graphics on the screen. in this tutorial, we will learn how to draw a rainbow using python's turtle graphics library.

### prerequisites

before we begin, make sure you have python installed on your computer. the turtle module comes pre-installed with python, so you won't need to install anything extra. you can check if python is installed by running `python --version` or `python3 --version` in your command line or terminal.

### getting started with turtle graphics

1. **import the turtle module**: we start by importing the turtle module.
2. **set up the screen**: we'll create a screen for our turtle to draw on.
3. **create a turtle**: we'll create a turtle object that will draw the rainbow.
4. **draw the rainbow**: finally, we will use a loop to draw arcs in different colors to form a rainbow.

### code example

here's a simple example of how to draw a rainbow using turtle graphics in python:

### explanation of the code

- **importing turtle**: we start by importing the turtle module.
- **function definition**: we define a function `draw_rainbow(radius)` that takes an initial radius for the largest arc of the rainbow.
- **colors**: we create a list of colors that represent the rainbow.
- **looping through colors**: we loop through each color, set the turtle's color, and draw a semicircle. the turtle moves forward after drawing each arc, decreasing the radius for the next arc.
- **setting up the screen**: we set a sky blue background to represent the sky.
- **moving the turtle**: we position the turtle at the bottom of the screen to start drawing the rainbow.

### running the code

2. run the file using the command line or terminal:

or


# ...

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