turtle.sety() function in Python

turtle.sety() method moves the turtle to a specified y-coordinate while keeping its current x-coordinate and heading (direction) unchanged. If the pen is down, it will draw a line from the current position to the new y-coordinate; if the pen is up, it moves without drawing.

Syntax:

turtle.sety(y)

• Parameters: y (int | float) is the y-coordinate to move the turtle to.
• Returns: This method only changes the turtle's vertical position on the screen.

Examples of turtle.sety() function

Example 1 : Simple vertical movement

import turtle

print(turtle.position())  # Initial position
turtle.sety(30)
print(turtle.position())  # After moving up
turtle.sety(-50)
print(turtle.position())  # After moving down

turtle.done()

Output :

(0.0, 0.0)
(0.0, 30.0)
(0.0, -50.0)

Explanation: The turtle’s y-coordinate changes to 30, then to -50, while the x-coordinate remains 0.

Example 2 : Drawing with y-coordinate changes

import turtle

for i in range(4):
    turtle.forward(100)
    turtle.right(90)
    turtle.forward(20)
    turtle.right(90)
    turtle.forward(100)
    
    turtle.penup()
    turtle.sety(-40 * (i + 1))
    turtle.pendown()
    
    turtle.left(180)

turtle.done()

Output

Explanation: The turtle draws repeated vertical patterns, then uses sety() to jump down to the next row without affecting the x-coordinate.