Python turtle绘图实例分析
画一个红色的五角星
from turtle import * color('red','red') begin_fill() for i in range(5): fd(200) rt(144) end_fill() done()
效果图：
画一条蟒蛇
#PythonDraw.py import turtle #turtle.setup(650,350,200,200) turtle.penup() turtle.fd(-250) turtle.pendown() turtle.pensize(25) turtle.pencolor("purple") turtle.seth(-40) for i in range(4): turtle.circle(40,80) turtle.circle(-40,80) turtle.circle(40,80/2) turtle.fd(40) turtle.circle(16,180) turtle.fd(40*2/3)
效果图：
画一组内切圆
import turtle turtle.pensize(2) turtle.circle(10) turtle.circle(40) turtle.circle(80) turtle.circle(120)
效果图：
画一个社会人小猪佩奇，代码是借鉴某位大佬的
from turtle import * def nose(x,y): pu() goto(x,y) pd() seth(-30) begin_fill() a=0.4 for i in range(120): if 0<=i<30 or 60<=i<90: a=a+0.08 lt(3) fd(a) else: a=a-0.08 lt(3) fd(a) end_fill() pu() seth(90) fd(25) seth(0) fd(10) pd() pencolor(255,155,192) seth(10) begin_fill() circle(5) color(160,82,45) end_fill() pu() seth(0) fd(20) pd() pencolor(255,155,192) seth(10) begin_fill() circle(5) color(160,82,45) end_fill() def head(x,y): color((255,155,192),"pink") pu() goto(x,y) seth(0) pd() begin_fill() seth(180) circle(300,-30) circle(100,-60) circle(80,-100) circle(150,-20) circle(60,-95) seth(161) circle(-300,15) pu() goto(-100,100) pd() seth(-30) a=0.4 for i in range(60): if 0<=i<30 or 60<=i<90: a=a+0.08 lt(3) fd(a) else: a=a-0.08 lt(3) fd(a) end_fill() def ears(x,y): color((255,155,192),"pink") pu() goto(x,y) pd() begin_fill() seth(100) circle(-50,50) circle(-10,120) circle(-50,54) end_fill() pu() seth(90) fd(-12) seth(0) fd(30) pd() begin_fill() seth(100) circle(-50,50) circle(-10,120) circle(-50,56) end_fill() def eyes(x,y): color((255,155,192),"white") pu() seth(90) fd(-20) seth(0) fd(-95) pd() begin_fill() circle(15) end_fill() color("black") pu() seth(90) fd(12) seth(0) fd(-3) pd() begin_fill() circle(3) end_fill() color((255,155,192),"white") pu() seth(90) fd(-25) seth(0) fd(40) pd() begin_fill() circle(15) end_fill() color("black") pu() seth(90) fd(12) seth(0) fd(-3) pd() begin_fill() circle(3) end_fill() def cheek(x,y): color((255,155,192)) pu() goto(x,y) pd() seth(0) begin_fill() circle(30) end_fill() def mouth(x,y): color(239,69,19) pu() goto(x,y) pd() seth(-80) circle(30,40) circle(40,80) def body(x,y): color("red",(255,99,71)) pu() goto(x,y) pd() begin_fill() seth(-130) circle(100,10) circle(300,30) seth(0) fd(230) seth(90) circle(300,30) circle(100,3) color((255,155,192),(255,100,100)) seth(-135) circle(-80,63) circle(-150,24) end_fill() def hands(x,y): color((255,155,192)) pu() goto(x,y) pd() seth(-160) circle(300,15) pu() seth(90) fd(15) seth(0) fd(0) pd() seth(-10) circle(-20,90) pu() seth(90) fd(30) seth(0) fd(237) pd() seth(-20) circle(-300,15) pu() seth(90) fd(20) seth(0) fd(0) pd() seth(-170) circle(20,90) def foot(x,y): pensize(10) color((240,128,128)) pu() goto(x,y) pd() seth(-90) fd(40) seth(-180) color("black") pensize(15) fd(20) pensize(10) color((240,128,128)) pu() seth(90) fd(40) seth(0) fd(90) pd() seth(-90) fd(40) seth(-180) color("black") pensize(15) fd(20) def tail(x,y): pensize(4) color((255,155,192)) pu() goto(x,y) pd() seth(0) circle(70,20) circle(10,330) circle(70,30) def setting(): pensize(4) hideturtle() colormode(255) color((255,155,192),"pink") setup(840,500) speed(10) def main(): setting() nose(-100,100) head(-69,167) ears(0,160) eyes(0,140) cheek(80,10) mouth(-20,30) body(-32,-8) hands(-56,-45) foot(2,-177) tail(148,-155) done() main()
效果极佳：
简单总结一下好了，其实turtle库还是非常有用的，以后可以画张很有创意的图片去表白女神了，讲不好那天就用上了呢：
显示器和turtle窗体的左上角都是原点
turtle.setup(width,height,startx,starty)设置窗体大小及位置，后面两个参数可选，非必需
空间坐标：绝对坐标：右方向x轴，上方向为y轴，正中心为原点，turtle.goto(x,y)让在任何位置的海龟到达指定的位置
海龟坐标：turtle.fd(d)海龟向前行多少像素
turtle.bk(d)向海龟的反方向运行
turtle.circle(r,angle)以海龟左边的某一点为圆心进行曲线运行
角度坐标：绝对角度：turtle.seth(angle)angle为绝对度数，表示改变海龟的运行方向
海龟角度：turtle.right(angle),turtle.left(angle)改变海龟的运行方向
RGB体系：turtle.colormode(mode)mode=1.0则改用0和1表示，mode=255则改用255和0表示，默认为小数
库引用：import <库名>,from <库名> import *或者from <库名> import <函数名>,import <库名> as <库别名>
画笔控制函数：turtle.penup()别名：turtle.pu()抬起画笔，turtle.pendown()别名：turtle.pd()落下画笔，turtle.pensize(width)别名：turtle.width(width)设置画笔宽度，turtle.pencolor(color)设置画笔颜色，color有三种方式，颜色字符串，或者RGB小数值，或者RGB元组值，例如：turtle.pencolor((0.63,0.13,0.94))
运动控制函数:turtle.circle(r,angle),r（海龟左方向）表示半径，angle表示绘制的角度，默认是360度
方向控制函数：turtle.seth(angle)改变海龟的行进方向，顺时针转向