└── 30lines.py


/30lines.py:
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 1 | import turtle
 2 | def draw_triangle(points, color):
 3 |     turtle.fillcolor(color)
 4 |     turtle.penup()
 5 |     turtle.goto(points[0])
 6 |     turtle.pendown()
 7 |     turtle.begin_fill()
 8 |     for i in range(1, 4):
 9 |         turtle.goto(points[i % 3])
10 |     turtle.end_fill()
11 | def midpoint(point1, point2):
12 |     return ((point1[0] + point2[0]) / 2, (point1[1] + point2[1]) / 2)
13 | def sierpinski_triangle(points, order):
14 |     if order == 0:
15 |         draw_triangle(points, 'blue')
16 |     else:
17 |         mid1 = midpoint(points[0], points[1])
18 |         mid2 = midpoint(points[1], points[2])
19 |         mid3 = midpoint(points[2], points[0])
20 |         sierpinski_triangle([points[0], mid1, mid3], order - 1)
21 |         sierpinski_triangle([mid1, points[1], mid2], order - 1)
22 |         sierpinski_triangle([mid3, mid2, points[2]], order - 1)
23 | def main():
24 |     turtle.speed(0)
25 |     points = [(-200, -100), (0, 200), (200, -100)]
26 |     sierpinski_triangle(points, 5)
27 |     turtle.hideturtle()
28 |     turtle.done()
29 | if __name__ == "__main__":
30 |     main()


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