python turtle画简单树_大家用Python-turtle库作图画出过哪些漂亮的树哇 ？

改进了大神的代码，turtle很好玩。

from turtle import *

from random import *

from math import *

from cmath import pi

def tree(n, l):

pd()

t = cos(radians(heading() + 45)) / 8 + 0.25

pencolor(t+125/255, t+71/255, t+11/255)

pensize(n / 4)

forward(l)

if n > 0:

b = random() * 15 + 10

c = random() * 15 + 10

d = l * (random() * 0.35 + 0.6)

right(b)

tree(n - 1, d)

left(b + c)

tree(n - 1, d)

right(c)

else:

s = randint(0,1)

if s == 1:

pencolor('green')

die = 110

C = 8

R = C/(2*cos(pi*((90-die/2)/180)))

for i in range(2):

left(die/2)

circle(-R,die)

pu()

left(die/2)

backward(2*R*cos(pi*((90-die/2)/180)))

pd()

die -= 70

R = C/(2*cos(pi*((90-die/2)/180)))

die = 90

R = C/(2*cos(pi*((90-die/2)/180)))

right(die/2)

circle(R,die)

pu()

right(die/2)

backward(2*R*cos(pi*((90-die/2)/180)))

pd()

pu()

backward(l)

bgcolor(0.5, 0.5, 0.5)

speed(0)

ht()

tracer(0,0)

left(90)

pu()

backward(300)

tree(12, 120)

done()