Python海龟画图常用指令

Python海龟画图常用指令：

turtle.forward(a)#或turtle.fd(a) 前进，距离为a#
turtle.back(a)#或turtle.bk(a) 后退，距离为a#
turtle.right(a)#或turtle.rt(a) 右转，角度为a#
turtle.left(a)#或turtle.lt(a) 左转，角度为a#
turtle.home(a)#回到原点#
turtle.goto(a,b)#去到坐标(a,b)#
turtle.color("颜色")#修改颜色#
turtle.width(a)#修改笔粗为a
turtle.circle(a)#画圆，半径为a#
turtle.circle(a,b)#a为正数时向右画弧，a为负数时向左画弧，半径为a，圆心角为b#
turtle.showturtle()#或turtle.st() 显示画笔#
turtle.hideturtle()#或turtle.ht() 隐藏画笔#
turtle.penup()#或up() 将画笔抬起#
turtle.pendown()#或pd() 将画笔放下#
turtle.write()#书写文本#