（一）Python入门：06海龟绘图-坐标系问题-画笔各种方法

一：开始学习图形化程序设计

 1 >>> import turtle #导入turtle 模块
 2 >>> turtle.showturtle() #显示箭头
 3 >>> turtle.write("python") #写字符串
 4 >>> turtle.forward(300) #前进 300 像素
 5 >>> turtle.color("red") #画笔颜色改为red
 6 >>> turtle.left(90) #箭头左转 90 度
 7 >>> turtle.forward(300)
 8 >>> turtle.goto(0,50) #去坐标（0,50）
 9 >>> turtle.goto(0,0)
10 >>> turtle.penup() #抬笔。这样，路径就不会画出来
11 >>> turtle.goto(0,300)
12 >>> turtle.pendown() #下笔。这样，路径就会画出来
13 >>> turtle.circle(100) #画圆

二：绘制奥运五环标记

 1 import turtle
 2 
 3 turtle.width(10)
 4 
 5 turtle.color("blue")
 6 turtle.circle(50)
 7 
 8 turtle.penup()
 9 turtle.goto(120,0)
10 turtle.color("black")
11 turtle.pendown()
12 turtle.circle(50)
13 
14 turtle.penup()
15 turtle.goto(240,0)
16 turtle.color("red")
17 turtle.pendown()
18 turtle.circle(50)
19 
20 turtle.penup()
21 turtle.goto(60,-50)
22 turtle.color("yellow")
23 turtle.pendown()
24 turtle.circle(50)
25 
26 turtle.penup()
27 turtle.goto(180,-50)
28 turtle.color("green")
29 turtle.pendown()
30 turtle.circle(50)

　　运行结果：

 

posted on 2019-05-11 23:22  JACK#zhang  阅读(5501)  评论(0)  编辑  收藏  举报