Valient's IT Notes: Turtle

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Christmas tree on Python on Turtle

# Christmas tree on Python
import turtle

def line(x1, y1, x2, y2):
    turtle.penup()
    turtle.goto(x1, y1)
    turtle.pendown()
    turtle.goto(x2, y2)
    
screen = turtle.Screen()
screen.title("Christmas Fir tree")
screen.setup(500, 500)
# To turn the drawing upside down
screen.setworldcoordinates(0, screen.window_height(), screen.window_width(), 0)

turtle.pencolor('green')

line(200,210,220,230)
line(220,230,180,230) 
line(180,230,200,210)
line(200,230,230,250)
line(230,250,170,250)
line(170,250,200,230)
line(200,250,250,270)
line(250,270,150,270)
line(150,270,200,250)
line(200,270,270,290)
line(270,290,130,290) 
line(130,290,200,270)
line(200,290,290,310)
line(290,310,110,310) 
line(110,310,200,290)

turtle.hideturtle()
turtle.exitonclick()

This simple code example was intentionally made similar to Christmas tree on Pascal on Android

The Christmas tree on Python on Turtle is available in My Github Repository

GUIs with Tkinter (and Fun with Turtles)

Turtle graphics is a popular way for introducing programming to kids. It was part of the original Logo programming language developed by Wally Feurzig and Seymour Papert in 1966.

The example that comes with the turtle docs:


from turtle import *

color('purple', 'cyan')
begin_fill()

while True:
    forward(200)
    left(170)
    if abs(pos()) < 1:
        break

end_fill()
done()

The example was found in the book "Head First Python, 2nd Edition" by Paul Barry, released November 2016, Publisher(s): O'Reilly Media, Inc.