python turtle 画图

关键的几个代码：

Turtle motion

Move and draw

forward() | fd()

backward() | bk() | back()

right() | rt()

left() | lt()

goto() | setpos() | setposition()

setx()

sety()

setheading() | seth()

home()

circle()

dot()

stamp()

clearstamp()

clearstamps()

undo()

speed()

Tell Turtle’s state

position() | pos()

towards()

xcor()

ycor()

heading()

distance()

Setting and measurement

degrees()

radians()

Pen control

Drawing state

pendown() | pd() | down()

penup() | pu() | up()

pensize() | width()

pen()

isdown()

Color control

color()

pencolor()

fillcolor()

Filling

fill()

begin_fill()

end_fill()

example：画个苹果🍎

import turtle
turtle.pendown()
turtle.fillcolor("red")
turtle.begin_fill()
turtle.circle(60, 360)
turtle.end_fill()
turtle.circle(60,180)
turtle.left(90)
turtle.forward(20)
turtle.left(90)
turtle.forward(10)
turtle.back(20)
turtle.forward(10)
turtle.left(90)
turtle.forward(50)
turtle.back(20)
turtle.left(180)
turtle.penup()
turtle.circle(60, 270)
turtle.pendown()
turtle.fillcolor("green")
turtle.begin_fill()
turtle.circle(60, 90)
turtle.left(90)
turtle.circle(60, 90)
turtle.left(135)
turtle.fd(90)
turtle.end_fill()
turtle.done()