hanasaka_python.py

import turtle
import random


class Tree:
    """木のクラス"""

    def __init__(self, x=0, y=0, n=5, length=40):
        self.n = n
        self.length = length

        self.t = turtle.Turtle()

        self.t.pu()
        self.t.setposition(x, y)
        self.t.pd()

        self.t.hideturtle()
        self.t.speed(0)
        self.t.setheading(90)

        self.bloom_point = []

    def grow(self, ):
        self.tree(self.n, self.length)

    def tree(self, n, length):
        self.t.pd()
        self.t.pensize(n)
        self.t.forward(length)
        if n > 0:
            # 分岐点の座標を記録
            branch_point = self.t.pos()

            branch_number = random.randint(2, 4)
            for _ in range(branch_number):
                branch_angle = random.uniform(-45, 45)
                branch_length = length * random.uniform(0.75, 0.9)

                self.t.right(branch_angle)
                self.tree(n - 1, branch_length)
                self.t.left(branch_angle)

                self.t.pu()
                self.t.setpos(branch_point)

        else:
            # 枝の先端を記録
            self.bloom_point.append(self.t.pos())

    # 花が咲く
    def bloom(self, ):
        self.t.pu()
        for position in self.bloom_point:
            # 花の場所に移動
            self.t.setpos(position)
            # 花が咲く
            self.t.dot(8, "pink")


if __name__ == "__main__":
    turtle.setup(300, 300)

    sakura = Tree(y=-150)
    sakura2 = Tree(x=10, y=-120)
    sakura.grow()
    sakura2.grow()
    sakura.bloom()
    sakura2.bloom()

    turtle.done()