turtle.isdown() function in Python

turtle.down() method is used to lower the turtle’s pen, allowing it to draw as it moves. If the pen is already down, the turtle continues drawing.

Syntax :

turtle.down()

# or

turtle.pendown()

# or

turtle.pd()

• Parameters: This method does not require any arguments.
• Returns: It only changes the pen state to “down” to enable drawing.

Examples

Example 1: Basic use of pen up and down

import turtle

turtle.forward(50)
turtle.up()
turtle.forward(50)
turtle.down()
turtle.forward(50)

turtle.done()

Output:

Explanation:

• The turtle draws the first 50 units.
• turtle.up() lifts the pen, so the next 50 units are moved without drawing.
• turtle.down() lowers the pen again, so the following 50 units are drawn.

Example 2: Using pen up and down with turns

import turtle

turtle.forward(50)
turtle.right(90)
turtle.up()
turtle.forward(50)
turtle.down()
turtle.right(90)
turtle.forward(50)

turtle.done()

Output:

Explanation:

• The turtle draws the first segment, turns, and lifts the pen to move without drawing.
• After lowering the pen with turtle.down(), it resumes drawing the next segment, demonstrating how pen state controls what is drawn.