method description turtle left(anglealiaseslt argumentangle number (integer or floatturn turtle left by angle units (units are by default degreesbut can be set via the degrees(and radians(functions angle orientation depends on mode (see this example (for turtle instance named turtle)turtle heading( turtle left( turtle heading( turtle onclick(funbtn= add=nonebind fun to mouse-click event on this turtle on canvas argumentsfun function with two argumentsto which will be assigned the coordinates of the clicked point on the canvas num number of the mouse-button defaults to (left mouse buttonadd true or false if truenew binding will be addedotherwise it will replace former binding example for the anonymous turtlei the procedural waydef turn(xy)turtle left( onclick(turnnow clicking into the turtle will turn it onclick(noneevent-binding will be removed turtle ondrag(funbtn= add=nonebind fun to mouse-move event on this turtle on canvas argumentsfun function with two argumentsto which will be assigned the coordinates of the clicked point on the canvas num number of the mouse-button defaults to (left mouse buttonevery sequence of mouse-move-events on turtle is preceded by mouse-click event on that turtle example (for turtle instance named turtle)turtle ondrag(turtle goto##subsequently clicking and dragging turtle will ##move it across the screen thereby producing handdrawings ##(if pen is downthis copy belongs to 'acha