python四瓣花图形_使用python图形模块turtle库绘制樱花、玫瑰、圣诞树代码实例

好的，下面是使用Python的turtle库绘制樱花、玫瑰、圣诞树的代码实例：

## 樱花图形代码实例

import turtle
import random

def tree(branchLen,t):
    if branchLen > 5:
        angle = random.randint(20, 40)
        factor = random.uniform(0.6, 0.8)
        t.pensize(branchLen/10)
        t.forward(branchLen)
        t.right(angle)
        tree(branchLen*factor,t)
        t.left(angle*2)
        tree(branchLen*factor,t)
        t.right(angle)
        t.backward(branchLen)

def petal(m, t):
    for i in range(m):
        angle = 360/m*i
        t.left(angle)
        t.circle(20, 60)
        t.right(angle+60)
        t.circle(20, 60)
        t.right(120-angle)

def main():
    t = turtle.Turtle()
    myWin = turtle.Screen()
    t.left(90)
    t.up()
    t.backward(300)
    t.down()
    t.color("brown")
    tree(100, t)
    t.up()
    t.forward(150)
    t.color("pink")
    t.down()
    petal(7, t)
    myWin.exitonclick()

main()

## 玫瑰图形代码实例

import turtle

def curve():
    for i in range(200):
        turtle.right(1)
        turtle.forward(1)

def heart():
    turtle.fillcolor('red')
    turtle.begin_fill()
    turtle.left(140)
    turtle.forward(113)
    curve()
    turtle.left(120)
    curve()
    turtle.forward(112)
    turtle.end_fill()

def txt():
    turtle.up()
    turtle.setpos(-70, 95)
    turtle.down()
    turtle.color('lightgreen')
    turtle.write("I Love You", font=('Arial', 30, 'bold'))

turtle.bgcolor('black')
turtle.speed(1)
turtle.pensize(5)
heart()
txt()
turtle.done()

## 圣诞树图形代码实例

import turtle

def drawTriangle(x, y):
    turtle.up()
    turtle.goto(x, y)
    turtle.down()
    turtle.begin_fill()
    turtle.color("green")
    turtle.goto(x+50, y+100)
    turtle.goto(x-50, y+100)
    turtle.goto(x, y)
    turtle.end_fill()

def drawRectangle(x, y):
    turtle.up()
    turtle.goto(x, y)
    turtle.down()
    turtle.begin_fill()
    turtle.color("brown")
    turtle.goto(x+20, y-50)
    turtle.goto(x-20, y-50)
    turtle.goto(x, y)
    turtle.end_fill()

def drawStar(x, y):
    turtle.up()
    turtle.goto(x, y)
    turtle.down()
    turtle.begin_fill()
    turtle.color("yellow")
    for i in range(5):
        turtle.forward(25)
        turtle.right(144)
        turtle.forward(25)
        turtle.right(72-144)
    turtle.end_fill()

drawRectangle(0, -150)
drawTriangle(0, -50)
drawTriangle(0, 50)
drawTriangle(0, 150)
drawStar(0, 200)

turtle.done()

以上就是使用Python的turtle库绘制樱花、玫瑰、圣诞树的代码实例，希望对您有所帮助！