Learn > BGE > Python – Turtle Graphics > 1. Turtle Basics

Turtle Basics

Initial Setup

Before you can draw, you must set up Turtle:

from turtle import *
screen = getscreen()
tom = Turtle()

 

Basic Commands

tom.forward(100)
  • Moves the turtle forward
  • Draws a line as it moves
tom.backward(100)
  • Moves the turtle backwards
  • Draws a line as it moves
tom.left(90)
  • Turns the turtle left (anticlockwise)
  • The angle is how much the turtle turns, measured in degrees (°)
  • Common angles:
    • 90° → quarter turn (used for squares)
    • 180° → turn around
    • 360° → full circle
tom.right(90)
  • Turns the turtle right (clockwise)
  • The angle is how much the turtle turns, measured in degrees (°)
  • Common angles:
    • 90° → quarter turn (used for squares)
    • 180° → turn around
    • 360° → full circle
tom.penup()
  • Lifts the pen
  • Turtle moves without drawing
tom.pendown()
  • Puts the pen down
  • Turtle draws again

Example - Square

from turtle import *
screen = getscreen()
tom = Turtle()

tom.forward(100)
tom.right(90)

tom.forward(100)
tom.right(90)

tom.forward(100)
tom.right(90)

tom.forward(100)
tom.right(90)

 

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