使用Python画了一棵圣诞树的实例代码

height = 5
​
stars = 1
for i in range(height):
  print((' ' * (height - i)) + ('*' * stars))
  stars += 2
print((' ' * height) + '|')

import turtle
​
screen = turtle.Screen()
screen.setup(375, 700)
 
​
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, 13):
  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 += 3
​
  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(13, 17):
  y = 30 * i
  for j in range(2):
    x = 30 * j
    square.goto(x, -y + 280)
    square.stamp()
    square.goto(-x, -y + 280)
    square.stamp()

import turtle
​
​
# 定义圣诞树的绿叶函数
def tree(d, s):
  if d <= 0:
    return
  turtle.forward(s)
  tree(d - 1, s * .8)
  turtle.right(120)
  tree(d - 3, s * .5)
  turtle.right(120)
  tree(d - 3, s * .5)
  turtle.right(120)
  turtle.backward(s)
​
​
n = 100
""" 设置绘图速度
'fastest' : 0
'fast'  : 10
'normal' : 6
'slow'  : 3
'slowest' : 1
"""
turtle.speed('fastest') # 设置速度
​
turtle.left(90)
turtle.forward(3 * n)
turtle.color("orange", "yellow")
turtle.left(126)
​
​
# turtle.begin_fill()
for i in range(5):
  turtle.forward(n / 5)
  turtle.right(144)
  turtle.forward(n / 5)
  turtle.left(72)
  turtle.end_fill()
turtle.right(126)
turtle.color("dark green")
turtle.backward(n * 4.8)
​
# 执行函数
tree(15, n)
turtle.backward(n / 5)