How to Draw Circle Using Turtle in Python - Simple Guide

To draw a circle using turtle in Python, use the circle(radius) method of a turtle object. This method draws a circle with the specified radius on the screen.

Syntax

The basic syntax to draw a circle with turtle is:

• turtle.circle(radius): Draws a circle with the given radius.
• The radius is a number that sets the size of the circle.
• Positive radius draws the circle counterclockwise; negative radius draws clockwise.

python

import turtle

t = turtle.Turtle()
t.circle(50)
turtle.done()

Output

A window opens showing a circle with radius 50 drawn by the turtle.

Example

This example creates a turtle and draws a circle with radius 100 pixels. It shows how simple it is to use the circle() method.

python

import turtle

screen = turtle.Screen()
t = turtle.Turtle()
t.circle(100)
screen.mainloop()

Output

A window opens displaying a circle with radius 100 drawn by the turtle.

Common Pitfalls

Common mistakes when drawing circles with turtle include:

• Not calling turtle.done() or screen.mainloop() to keep the window open.
• Using a negative radius without understanding it draws the circle clockwise.
• Forgetting to import the turtle module or create a turtle object.

python

import turtle

t = turtle.Turtle()
# Wrong: forgetting to keep window open
# t.circle(50)

# Right way:
t.circle(50)
turtle.done()

Output

A window opens showing a circle with radius 50 drawn by the turtle.

Quick Reference

Here is a quick summary of the circle() method parameters:

Parameter	Description
radius	Radius of the circle (positive for counterclockwise, negative for clockwise)
extent (optional)	Portion of the circle to draw in degrees (default is 360 for full circle)
steps (optional)	Number of steps to approximate the circle (higher means smoother)

Key Takeaways

Use the turtle object's circle(radius) method to draw circles easily.

Always call turtle.done() or screen.mainloop() to keep the drawing window open.

Positive radius draws counterclockwise circles; negative radius draws clockwise.

You can control how much of the circle to draw with the optional extent parameter.

The steps parameter controls the smoothness of the circle shape.