[python] math与turtle库之蝴蝶曲线
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【python代码】math与turtle库之蝴蝶曲线的运用
几个turtle库基本函数：
1：turtle.pensize(x) :X大小控制画笔大小 2：turtle.pencolor(“color”):画笔颜色控制，color为想要输入的颜色名称引入turtle库跟math库：
from turtle import* from math import* 几个math函数： exp（x）:表示为e的x次方 pow（x,y）：表示为x的y次方[python] math与turtle库之蝴蝶曲线代码：
**from turtle import * from math import * pensize(3) pencolor("red") #画笔颜色 def draw(a,end): t=0 while t<24*end: x=a*sin(t)*(exp(cos(t))-2*cos(4*t)+pow(sin(t/12),5)) y=a*cos(t)*(exp(cos(t))-2*cos(4*t)+pow(sin(t/12),5)) goto(x,y) t=t+0.05 if __name__ == '__main__': draw(60,pi)** 
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