本文以实例形式介绍了python turtle模块即海龟绘图的使用方法,对于需要进行图形编程的朋友相信会有一定的借鉴价值。
python turtle模块简介:
python2.6版本中引入的一个简单的绘图工具,叫做海龟绘图(Turtle Graphics)
1.使用海龟绘图首先我们需要导入turtle,如下所示:
from turtle import * #将turtle中的所有方法导入
2.海龟绘图属性:
(1)位置
(2)方向
(3)画笔(画笔的属性,颜色、画线的宽度)
3.操纵海龟绘图有着许多的命令,这些命令可以划分为两种:一种为运动命令,一种为画笔控制命令
(1)运动命令:
forward(degree) #向前移动距离degree代表距离 backward(degree) #向后移动距离degree代表距离 right(degree) #向右移动多少度 left(degree) #向左移动多少度 goto(x,y) #将画笔移动到坐标为x,y的位置 stamp() #复制当前图形 speed(speed) #画笔绘制的速度范围[0,10]整数
(2)画笔控制命令:
down() #移动时绘制图形,缺省时也为绘制 up() #移动时不绘制图形 pensize(width) #绘制图形时的宽度 color(colorstring) #绘制图形时的颜色 fillcolor(colorstring) #绘制图形的填充颜色 fill(Ture) fill(false)
4.关于turtle简介许多下面我们看个实例:
(一)绘制正方形:
import turtle import time #定义绘制时画笔的颜色 turtle.color("purple") #定义绘制时画笔的线条的宽度 turtle.size(5) #定义绘图的速度 turtle.speed(10) #以0,0为起点进行绘制 turtle.goto(0,0) #绘出正方形的四条边 for i in range(4): turtle.forward(100) turtle.right(90) #画笔移动到点(-150,-120)时不绘图 turtle.up() turtle.goto(-150,-120) #再次定义画笔颜色 turtle.color("red") #在(-150,-120)点上打印"Done" turtle.write("Done") time.sleep(3)
(二)绘制五角星:
import turtle import time turtle.color("purple") turtle.pensize(5) turtle.goto(0,0) turtle.speed(10) for i in range(6): turtle.forward(100) turtle.right(144) turtle.up() turtle.forward(100) turtle.goto(-150,-120) turtle.color("red") turtle.write("Done") time.sleep(3)
这里给出了两个简单的实例,大家可以根据上面的思路与方法进一步拓展,绘制出一些更复杂的图形。

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