（四）海龟绘图初试水

海龟绘图之坐标系问题

使用代码

>>> import turtle #导入turtle模块 >>> turtle.showturtle() #显示箭头 >>> turtle.write("你好,python") #写字符串 >>> turtle.forward(300) #前进300像素 >>> turtle.color("red") #画笔颜色改为red >>> turtle.left(90) #箭头左转90度 >>> turtle.forward(300) >>> turtle.goto(0,50) #取坐标（0，50） >>> turtle.goto(0,0) >>> turtle.penup() #抬笔 >>> turtle.goto(0,300) >>> turtle.pendown() #落笔 >>> turtle.circle(100)

运行结果

海龟绘图之奥运五环

使用代码

#绘制奥运五环 import turtle turtle.width(10) turtle.color("blue") turtle.circle(50) turtle.penup() turtle.goto(120,0) turtle.pendown() turtle.color("black") turtle.circle(50) turtle.penup() turtle.goto(240,0) turtle.pendown() turtle.color("red") turtle.circle(50) turtle.penup() turtle.goto(60,-50) turtle.pendown() turtle.color("yellow") turtle.circle(50) turtle.penup() turtle.goto(180,-50) turtle.pendown() turtle.color("green") turtle.circle(50)

运行截图