Turtle Turbines

You can draw nice turbines with Python turtle with the codes in this tutorial.

We will explain how you can twist to code to give more flavor to your drawing as well.

Basic turtle illustration - turbine
import turtle

t = turtle.Turtle()

for i in range(10):
    t.forward(200)
    t.right(120)
    t.forward(40)
    t.goto(0,0)
    t.left(84)

turtle.done()

Turtle Pensize

pensize() will let you control the thickness of the pen. Look at the code below:
Basic turtle illustration - turbine (pensize = 5)
import turtle

t = turtle.Turtle()
t.pensize(5)

for i in range(10):
    t.forward(200)
    t.right(120)
    t.forward(40)
    t.goto(0,0)
    t.left(84)
    
turtle.done()

Turtle Colors

Using color() you can give your pen a color. Using a list of predefined colors you can loop through the colors with a simple trick. % operator will give the remainder from a division.

colors[i%6] will make sure colors only takes an index from 1 to 6 so each color gets assigned and then the index goes back to zero when i reaches a multiple of 6.

Turtle spiral example with color iteration
import turtle

colors = ["red", "blue", "green", "gray", "orange", "black"]
a = turtle.Turtle()

for i in range(30):
    a.forward(20+i)
    a.left(30 - i/1.5)
    a.color(colors[i%6])

turtle.done()
Basic turtle illustration - turbine (iterating colors)
import turtle

t = turtle.Turtle()
colors = ['red', 'blue', 'orange', 'green', 'black', 'brown']

for i in range(10):
    t.color(colors[i%6])
    t.forward(200)
    t.right(120)
    t.forward(40)
    t.goto(0,0)
    t.left(84)

turtle.done()

Combining codes

Let’s add a post to our turbine so it can rotate one day.

Basic turtle illustration - turbine (with the post)
import turtle

t = turtle.Turtle()
colors = ['red', 'blue', 'orange', 'green', 'black', 'brown']
t.pensize(20)

t.goto(0,150)
t.right(90)
t.color('gray')
t.forward(470)

t.pensize(3)

t.penup()
t.goto(0,150)
t.pendown()

for i in range(10):
    t.color(colors[i%6])
    t.forward(200)
    t.right(120)
    t.forward(40)
    t.goto(0,150)
    t.fillcolor("black")
    t.left(84)



turtle.done()
Basic turtle illustration - turbine (more elegant shapes)
import turtle

def turbase(thickness):

    t = turtle.Turtle()
    t.pensize(thickness)
    t.color('lightgray')
    t.penup()    
    t.goto(4,0)
    t.pendown()
    t.right(90)
    t.forward(400)


def turwings(thickness, startingdegree):
    t = turtle.Turtle()
    t.pensize(thickness)
    colors = ['red', 'blue', 'orange', 'green', 'black', 'brown']    
    t.color("darkblue")
    i=30
    
    t.penup()
    t.forward(20)
    t.pendown()
    t.right(startingdegree)
    t.forward(300)
    t.left(174)
    t.forward(300)
    
    
    t.right(45)
    t.forward(300)
    t.left(175)
    t.forward(300)
    
    
    t.right(70)
    t.forward(300)
    t.left(175)
    t.forward(300)
    
    t.fillcolor('red')    
turbase(20)
turwings(3, 257.5)
turtle.done()

If you enjoyed this Python turtle lesson, feel free to spread it.

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