python绘图小结（2）

Python015

python绘图小结（2）,第1张

#例题1绘制一个四叶草

import turtle

turtle.color("green","green")

turtle.setheading(90)

turtle.begin_fill()

for i in range(4):

    turtle.circle(-100,180)

    turtle.left(90)

turtle.end_fill()

turtle.done()

#例题2绘制一个四角星

import turtle

turtle.color("yellow","yellow")

turtle.begin_fill()

for i in range(4):

    turtle.circle(100,90)

    turtle.right(180)

turtle.end_fill()

turtle.done()

#例题3绘制一个四叶花瓣

import turtle

turtle.color("pink","pink")

turtle.begin_fill()

turtle.circle(-100,90)

turtle.right(90)

turtle.circle(-100,90)

turtle.circle(100, 90)

turtle.right(90)

turtle.circle(-100, -90)

turtle.right(90)

turtle.circle(-100, 90)

turtle.right(90)

turtle.circle(-100, 90)

turtle.circle(100, 90)

turtle.right(90)

turtle.circle(-100, -90)

turtle.end_fill()

turtle.done()

#例题4输入一个数字，绘制以该数字为边数的正多边形

import turtle

a=int(turtle.textinput("绘制正多边形","请输入边数："))

turtle.circle(100,360,a)

turtle.done()

1、python画樱花树代码为：

import turtle as T

import random

import time

2、# 画樱花的躯干(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') # 白

else:

t.color('lightcoral') # 淡珊瑚色

t.pensize(branch / 3)

elif branch <8:

if random.randint(0, 1) == 0:

t.color('snow')

else:

t.color('lightcoral') # 淡珊瑚色

t.pensize(branch / 2)

else:

t.color('sienna') # 赭(zhě)色

t.pensize(branch / 10) # 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()

3、# 掉落的花瓣

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') # 淡珊瑚色

t.circle(1)

t.up()

t.backward(a)

t.right(90)

t.backward(b)

# 绘图区域

t = T.Turtle()

# 画布大小

w = T.Screen()

t.hideturtle() # 隐藏画笔

t.getscreen().tracer(5, 0)

w.screensize(bg='wheat') # wheat小麦

t.left(90)

t.up()

t.backward(150)

t.down()

t.color('sienna')

4、# 画樱花的躯干

Tree(60, t)

# 掉落的花瓣

Petal(200, t)

w.exitonclick()