猫史档案馆

import turtle as T
import random
import time

# draw the trunk and branch(60,t)
def Tree(branch, t):
time.sleep(0.0005)
if branch > 3:
if 8 <= branch <= 12:
if random.randint(0, 2) == 0:
t.color('snow') # snow white
else:
t.color('lightcoral') # lightcoral
t.pensize(branch / 3)
elif branch < 8:
if random.randint(0, 1) == 0:
t.color('snow')
else:
t.color('lightcoral')
t.pensize(branch / 2)
else:
t.color('sienna') # sienna
t.pensize(branch / 10) # set pensize to 6
t.forward(branch)
a = 1.5 * random.random()
t.right(20 * a)
b = 1.5 * random.random()
Tree(branch - 10 * b, t)
t.left(40 * a)
Tree(branch - 10 * b, t)
t.right(20 * a)
t.up()
t.backward(branch)
t.down()

# falling petal
def Petal(m, t):
for i in range(m):
a = 200 - 400 * random.random()
b = 10 - 20 * random.random()
t.up()
t.forward(b)
t.left(90)
t.forward(a)
t.down()
t.color('lightcoral') # light coral
t.circle(1)
t.up()
t.backward(a)
t.right(90)
t.backward(b)

# drawing area
t = T.Turtle()
# screen size
w = T.Screen()
t.hideturtle() # hide the brush
t.getscreen().tracer(5, 0)
w.screensize(bg='wheat') # set screen background color towheat
t.left(90)
t.up()
t.backward(150)
t.down()
t.color('sienna')

# draw the trunk and branch
Tree(60, t)
# falling petal
Petal(200, t)
w.exitonclick()