今天继续看Python，发现一个绘图的包turtle，非常简单和有趣。turtle（中文海龟的意思，可能因为默认的demo有一只乌龟），据说海龟绘图以“最适合教给孩子的编程语言”而闻名。
从Python2.5开始，turtle被包含在Python库中，官网文档在：turtle — Turtle graphics for Tk
下面给出一个实例，这是一个画五角星的简单demo：
# -*- coding: utf-8 -*-import turtleimport timeturtle.forward(100)turtle.right(144)turtle.forward(100)turtle.right(144)turtle.forward(100)turtle.right(144)turtle.forward(100)turtle.right(144)turtle.forward(100)turtle.right(144)time.sleep(3)
在使用中发现一个问题：
错误框标题是Microsoft Visual C++ Runtime Library内容是：Runtime Error！Program c:\Python27\python.exeR6025-pure virtual function call
网上找了一下，比较靠谱的解释：Runtime Error! R6025 pure virtual function call
下面再给出一个复杂的demo，画一个圆再画出多个正方形：
# -*- coding: utf-8 -*-# the turtle module provides turtle graphics primitives, it uses a Tkinter canvas# turtle is part of the Tkinter library (lib-tk)# tested with Python24 vegaseat 30jun2005from turtle import *import time# pen/turtle starts at the center (x=0, y=0) of the turtle display areacolor("green")# pen up, don't drawup()# centers the circlegoto(0,-50)# pen down, drawdown()# radius=50 center is 50 radius units above the turtlecircle(50)up()# center the turtle againgoto(0,0)down()# draw blue 100x100 squarescolor("blue")for deg in range(0, 61, 6): right(90 + deg) forward(100) right(90) forward(100) right(90) forward(100) right(90) forward(100) up()goto(-150,-120)color("red")write("Done!")time.sleep(5) # wait 5 seconds
也可以在IDLE命令行中使用turtle，用命令的方式演示绘图：
>>> from turtle import *>>> reset()>>> shape("square")>>> color("blue", "red")>>> resizemode("user") # at first no visual effect, but ...>>> turtlesize(2,3,5)>>> fd(100)>>> left(45)>>> pensize(8)>>> fd(100)>>> left(90)>>> pencolor("green")>>> fd(100)>>> turtlesize(1,5)>>> left(1080)>>> stamp()8>>> left(45)>>> ht()>>> fd(100)>>> stamp()9>>> left(45)>>> fd(100)>>> stamp()10>>>
原文地址：Python 使用 turtle 绘图, 感谢原作者分享。 人生难免遇风雨,天空晴朗有阴云,别因雨水湿透衣衫而难过,
