turtle.onrelease() function in Python
Last Updated :
26 Jul, 2020
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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 :
# 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.
