#本地python环境编写不是jupyter环境IDLE就可以运行后面的代码可以jupyter里面运行think in Python 第四章练习题 from turtle import * from math import sin,pi def triangle(r,n): forward(r) a1180-(180-360/n)/2 left(a1) length2*r*sin(360/(2*n)/180*pi) #print(length) forward(length) left(a1) forward(r) left(180) def draw_pie(n, size): for i in range(n): triangle(size,n) # left(360/n) #make_turtle() # triangle(20,5) size 40 draw_pie(5, size) #turtle make_turtle(delay1) ##jump(-80) ## ##size 40 ##draw_pie(5, size) ##jump(2*size) ##draw_pie(6, size) ##jump(2*size) ##draw_pie(7, size)