turtle.onrelease() function in Python

The turtle module provides turtle graphics primitives, in both object-oriented and procedure-oriented ways. Because it uses tkinter for the underlying graphics, it needs a version of Python installed with Tk support.

turtle.onrelease()

This function is used to bind fun to the mouse-button-release event on this turtle on canvas.

Syntax :

turtle.onrelease(fun, btn=1, add=None)

Parameters:

Arguments	Description
fun	a function with two arguments, to which will be assigned the coordinates of the clicked point on the canvas.
btn	number of the mouse-button defaults to 1 (left mouse button).
add	True or False. If True, new binding will be added, otherwise, it will replace a former binding

Below is the implementation of the above method with an example :

Python3

# import package
import turtle

# methods to action
def fxn1(x,y):
   turtle.fillcolor("blue")
def fxn2(x,y):
   turtle.fillcolor("white")

# set screen and turtle
sc=turtle.Screen()
sc.setup(400,300)

turtle.shape("turtle")
turtle.turtlesize(2)
turtle.speed(1)

# allow user to click for some action
turtle.onclick(fxn1)

# allow user to release for some action
turtle.onrelease(fxn2)

Output :

Here we can find that :

• whenever the user click (yellow-colored dot on  arrow) on turtle it changes to the blue color, and
• after releasing (yellow dot disappears) from the screen it changes to white color.