第一種

-- coding: utf-8 --

“”"
功能：圣誕樹1
作者：cxf
日期：2021年12月22日
“”"
height = 5
stars = 1
for i in range(height):
print((’ ’ * (height - i) + (’*’ * stars)))
stars += 2
print((’ ’ * height) + ‘|’)

第二種 方塊圣誕樹

-- coding: utf-8 --

“”"
功能：圣誕樹2
作者：cxf
日期：2021年12月22日
“”"
import turtle

screen = turtle.Screen()

screen.setup(800,600)

circle = turtle.Turtle()

circle.shape(‘circle’)

circle.color(‘red’)

circle.speed(‘fastest’)

circle.up()

square = turtle.Turtle()

square.shape(‘square’)

square.color(‘green’)

square.speed(‘fastest’)

square.up()

circle.goto(0,280)

circle.stamp()

k = 0

for i in range(1, 17):

y = 30*i

for j in range(i-k):

x = 30*j

square.goto(x,-y+280)

square.stamp()

square.goto(-x,-y+280)

square.stamp()

if i % 4 == 0:

x = 30*(j+1)

circle.color(‘red’)

circle.goto(-x,-y+280)

circle.stamp()

circle.goto(x,-y+280)

circle.stamp()

k += 2

if i % 4 == 3:

x = 30*(j+1)

circle.color(‘yellow’)

circle.goto(-x,-y+280)

circle.stamp()

circle.goto(x,-y+280)

circle.stamp()

square.color(‘brown’)

for i in range(17,20):

y = 30*i

for j in range(3):

x = 30*j

square.goto(x,-y+280)

square.stamp()

square.goto(-x,-y+280)

square.stamp()

turtle.exitonclick()

第三種 線性圣誕樹

-- coding: utf-8 --

“”"
功能：圣誕樹3
作者：cxf
日期：2021年12月22日
“”"
import turtle as t
from turtle import *
import random as r
import time
n = 100.0
t.pensize(10)
speed(“fastest”)
screensize(bg=‘black’)
left(90)
forward(3 * n)
color(“orange”, “yellow”)
begin_fill()
left(126)
for i in range(5):
forward(n / 5)
right(144)
forward(n / 5)
left(72)
end_fill()
right(126)
def drawlight():
if r.randint(0, 30) == 0:
color(‘tomato’)
circle(6)
elif r.randint(0, 30) == 1:
color(‘orange’)
circle(3)
else:
linewidth = 5
color(‘dark green’)
color(“dark green”)
backward(n * 4.8)
def tree(d, s):
if d <= 0: return
forward(s)
tree(d - 1, s * .8)
right(120)
tree(d - 3, s * .5)
drawlight()
right(120)
tree(d - 3, s * .5)
right(120)
backward(s)
tree(15, n)
backward(n / 2)
for i in range(200):
a = 200 - 400 * r.random()
b = 10 - 20 * r.random()
up()
forward(b)
left(90)
forward(a)
down()
if r.randint(0, 1) == 0:
color(‘tomato’)
else:
color(‘wheat’)
circle(2)
up()
backward(a)
right(90)
backward(b)
t.color(“dark red”, “red”)
t.write(“Merry Christmas”, align=“center”, font=(“Comic Sans MS”, 40, “bold”))
def drawsnow():
t.ht()
t.pensize(2)
for i in range(200):
t.pencolor(“white”)
t.pu()
t.setx(r.randint(-350, 350))
t.sety(r.randint(-100, 350))
t.pd()
dens = 6
snowsize = r.randint(1, 10)
for j in range(dens):
t.fd(int(snowsize))
t.backward(int(snowsize))
t.right(int(360 / dens))
drawsnow()

總結

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