簡單的繪製聖誕樹

新建tree1.py或者直接輸入下面程式碼執行

#宣告樹的高度
height = 5
#樹的雪花數，初始為1
stars = 1
#以數的高度作為迴圈次數

for i in range(height):
    print((' ' * (height - i)) + ('*' * stars))
    stars += 2
#輸出樹幹
print((' ' * height) + '|')

使用turtle繪製簡單聖誕樹

新建tree2py，輸入以下程式碼

#匯入turtle庫
import turtle
#設定螢幕大小
screen = turtle.Screen()
screen.setup(800,600)
#獲取畫筆並設定一些屬性：圓形、紅色、快
circle = turtle.Turtle()
circle.shape('circle')
circle.color('red')
circle.speed('fastest')
#擡起畫筆
circle.up()
#重新獲取畫筆
square = turtle.Turtle()
#重新設定畫筆屬性：四方形、綠色、快
square.shape('square')
square.color('green')
square.speed('fastest')
#重新擡起畫筆
square.up()
#跳到指定座標位置
circle.goto(0,280)
#複製當前圖形
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()
 

執行：

使用Turtle繪製複雜聖誕樹

新建tree3.py，輸入以下程式碼

#匯入所依賴的庫
from turtle import *
import random
import time
 
n = 80.0
#設定速度快
speed("fastest")
#背景顏色 海貝殼色，偏粉色
screensize(bg='seashell')
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)

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)
    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 * random.random()
    b = 10 - 20 * random.random()
    up()
    forward(b)
    left(90)
    forward(a)
    down()
    if random.randint(0, 1) == 0:
            color('tomato')
    else:
        color('wheat')
    circle(2)
    up()
    backward(a)
    right(90)
    backward(b)
time.sleep(60)
 

執行：

原始碼下載

https://download.csdn.net/download/badao_liumang_qizhi/10874465