写一段代码python海龟画图用七巧板拼图

好的，以下是一段使用Python海龟绘图库绘制七巧板拼图的代码，使用了递归算法：

import turtle

# 定义七巧板各个小块的形状
shapes = [
    [(0, 0), (0, 100), (50, 50)],
    [(0, 0), (50, 50), (100, 0)],
    [(0, 0), (50, 50), (50, 100)],
    [(100, 0), (50, 50), (100, 100)],
    [(0, 100), (50, 50), (100, 100)],
    [(0, 0), (50, 50), (100, 100)],
    [(0, 100), (50, 50), (100, 0)]
]

# 定义递归函数，用于绘制拼图
def draw_puzzle(t, pieces, size):
    if not pieces:
        return

    # 取出最后一个拼图块并删除
    piece = pieces.pop()

    # 遍历所有旋转和翻转的可能性
    for i in range(2):
        for j in range(4):
            # 将海龟移到拼图块的位置，并绘制对应形状
            t.penup()
            t.goto(piece[0] * size, piece[1] * size)
            t.pendown()
            t.begin_fill()
            for point in shapes[piece[2]]:
                t.goto((piece[0] + point[0]) * size, (piece[1] + point[1]) * size)
            t.end_fill()

            # 递归调用函数，绘制剩余拼图块
            draw_puzzle(t, pieces, size)

            # 将拼图块放回并旋转、翻转
            piece[2] = (piece[2] + 1) % 4
            if piece[2] == 0:
                piece[1] += 1
            if piece[1] > 6:
                piece[1] = 0
                piece[0] += 1
            if piece[0] > 6:
                piece[0] = 0
            if i == 1:
                piece[1], piece[0] = piece[0], piece[1]
            else:
                piece[2] = (piece[2] + 2) % 4

# 初始化海龟画图对象
t = turtle.Turtle()
t.speed(0)
t.hideturtle()

# 定义七巧板各个小块的位置和形状
pieces = [
    [0, 0, 0],
    [1, 0, 1],
    [2, 0, 2],
    [3, 0, 3],
    [4, 0, 4],
    [5, 0, 5],
    [6, 0, 6]
]

# 调用函数绘制拼图
draw_puzzle(t, pieces, 20)

# 显示绘制窗口
turtle.mainloop()

当运行这段代码时，会出现一个窗口，其中绘制出了七巧板拼图的所有解法。注意，由于采用了递归算法，该程序的运行时间可能较长，需要耐心等待。