turtle.done() function in Python

20 Sep turtle.done() function in Python

Posted at 11:04h in Python Turtle by Studyopedia Editorial Staff 0 Comments

The turtle.done() function starts the event loop. This must be the last statement in a turtle program to keep the window open. It is an alias for mainloop().

Syntax: turtle.done()
Parameters: None.

Let us see an example to implement the turtle.done() function in Python:

Demo38.py

# turtle.done() function in Python
# Code by Studyopedia

import turtle

window = turtle.Screen()
t = turtle.Turtle()

t.forward(100)
t.left(90)
t.forward(100)

turtle.done()  # Keep window open until manually closed

The following is the output:

turtle.done() function in Python

In the above code, we followed the below steps:

Import module: import turtle loads the turtle graphics library.
Create screen: window = turtle.Screen() opens the drawing window.
Create turtle: t = turtle.Turtle() creates the turtle you’ll control.
Move forward: t.forward(100) draws a 100-unit line (pen is down by default).
Turn left: t.left(90) rotates the turtle 90° counterclockwise.
Move forward again: t.forward(100) draws another 100-unit line in the new direction.
Keep window open: turtle.done() enters the event loop and keeps the window open until you close it manually.