To draw four squares turtle module has been used with the following functions, turtule.left$(90),$ turtle.right$(90)$ and turtle.forward$(100).$ Using $100$ value in foward function a square is formed with $100$ pixel length. turtle.rigth$(90)$ is used to move the pointer to the right to form all the four sides of the square. turtle.setup$()$ is used to set the size of the Python turtle graphics window.