Recursive Turtle graphics program to draw nested squares

Overview

In this tutorial, we will learn how to draw nested squares using a recursive turtle graphics program. We will use Eclipse IDE to run the python program.

Create graphics window and turtle handle.

WindowTurtleScreen=turtle.Screen()
tDocsTurtle = turtle.Turtle()

The recursive function is NestedSquare. This function calls itself. Initially, we will call the function from the main

NestedSquare(tDocsTurtle,600,60)

Program

 

#Import turtle module 
import turtle

#############################################
# Recursive Function to draw square # 
# using Turtle graphics in Python #
#############################################
def NestedSquare(tDocsTurtle,side, delta):
 if side < delta: 
 return 
 
 tDocsTurtle.penup()
 tDocsTurtle.goto(-(side-delta)/2, -(side-delta)/2)
 tDocsTurtle.pendown()
 
 for i in range(4):
 tDocsTurtle.forward(side)
 tDocsTurtle.left(90) 

 #Recursive call to draw inner square
 NestedSquare(tDocsTurtle,side-delta,delta)
 
 
########################################
# Main function #
########################################
def main():
 WindowTurtleScreen=turtle.Screen()
 tDocsTurtle = turtle.Turtle()
 WindowTurtleScreen.title("NestedSquares - www.TestingDocs.com")
 tDocsTurtle.penup()
 tDocsTurtle.goto(0, -300)
 tDocsTurtle.pendown()
 tDocsTurtle._write("www.TestingDocs.com", "right","Arial") 
 NestedSquare(tDocsTurtle,600,60) 
 WindowTurtleScreen.exitonclick()
 

main()

Sample Output

Run the program.

Run As >> Python Run