turtle海龟库是一个很流行的绘制图像的函数库,想象一个小乌龟,在一个横轴为x、纵轴为y的坐标系原点,(0,0)位置开始,它根据一组函数指令的控制,在这个平面坐标系中移动,从而在它爬行的路径上绘制了图形。
七巧板中,各个边长可以用勾股定理求到
勾股定理公式 a²+b²=c²
from math import sqrt from turtle import color from turtle import begin_fill from turtle import left from turtle import forward from turtle import end_fill from turtle import right from turtle import exitonclick from turtle import hideturtle a=300 color("red") # ① begin_fill() left(45) forward(a) left(135) forward(sqrt(2*a*a)) left(135) forward(a) end_fill() color("blue") # 2 begin_fill() right(90) forward(a) right(135) forward(sqrt(2*a*a)) right(135) forward(a) end_fill() color("orange") color("orange") #3 begin_fill() left(90) forward(a) right(135) forward((sqrt(2*a*a))/2) right(135) forward(a/2) end_fill() color("#9400D3")#4 begin_fill() for i in range(4): left(90) forward(a/2) end_fill() left(90) forward(a/2) end_fill() color("#CD00CD") # 5 begin_fill() forward(a/2) left(135) forward((sqrt(2*a*a))/2) left(135) forward(a/2) end_fill() left(90) forward(a/2) end_fill() color("yellow") # 6 begin_fill() forward(a/2) left(135) forward((sqrt(2*a*a))/2) left(45) forward(a/2) end_fill() color("green") #7 begin_fill() forward(a/2) right(135) forward((sqrt(2*a*a))/2) right(90) forward((sqrt(2*a*a))/2) end_fill() hideturtle() exitonclick()
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