python画一棵树源代码 用代码画出一棵树

分享给大家一篇文章，教你怎样用Python画了一棵圣诞树，快来学习。

如何用Python画一个圣诞树呢？

最简单：

height = 5

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

效果：

哈哈哈哈，总有一种骗了大家的感觉。

其实本文是想介绍Turtle库来画圣诞树。

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()

效果：

方法二：

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)

效果：