python库——Turtle详解编程语言

penup():抬起画笔； 
pendown():落下画笔； 
pensize(width):画笔宽度；

forward(d)/fd(d): 向前移动距离d 
backward(d)/bd(d): 向后移动距离d 
left(angle):向左转angle度； 
right(angle):向右转angle度； 
goto(x,y):移动到绝对位置； 
home() : 移动到原点； 
circle(r, extent = None):绘制半径为r，角度为extent的弧形； 
setheading(angle)/seth(angle):改变前进方向； 
undo():撤销最后的动作； 
speed():将速度设置为0..10范围内整数；

from turtle import * 
color('red', 'yellow') 
begin_fill() 
while True: 
    forward(200) 
    left(170) 
    if abs(pos()) < 1: 
        break 
end_fill() 
done()

from turtle import * 
setup(600, 600, 0, 0) 
pensize(5) 
up() 
goto(0, -200) 
down() 
 
# 先画一个圆,并填充为红色 
begin_fill() 
color("red") 
circle(radius=150) 
end_fill() 
 
# 画苹果把儿 
color("brown") 
penup() 
goto(-90, 0) 
pendown() 
circle(180, 40) 
penup() 
setheading(105) 
goto(-20, 20) 
pendown() 
circle(180, 50) 
pendown() 
 
# 画左边叶子 
begin_fill() 
color("green") 
circle(180, 50) 
setheading(-30) 
circle(180, 55) 
end_fill() 
 
# 画右边叶子 
begin_fill() 
color("green") 
setheading(0) 
circle(180, 50) 
setheading(-180) 
circle(180, 50) 
end_fill() 
done()

from turtle import * 
# 设置初始位置 
penup() 
left(90) 
forward(200) 
pendown() 
right(90) 
# 花蕊 
fillcolor("blue") 
begin_fill() 
circle(10,180) 
circle(25,110) 
left(50) 
circle(60,45) 
circle(20,170) 
right(24) 
forward(30) 
left(10) 
circle(30,110) 
forward(20) 
left(40) 
circle(90,70) 
circle(30,150) 
right(30) 
forward(15) 
circle(80,90) 
left(15) 
forward(45) 
right(165) 
forward(20) 
left(155) 
circle(150,80) 
left(50) 
circle(150,90) 
end_fill() 
# 花瓣1 
left(150) 
circle(-90,70) 
left(20) 
circle(75,105) 
setheading(60) 
circle(80,98) 
circle(-90,40) 
# 花瓣2 
left(180) 
circle(90,40) 
circle(-80,98) 
setheading(-83) 
# 叶子1 
forward(30) 
left(90) 
forward(25) 
left(45) 
fillcolor("green") 
begin_fill() 
circle(-80,90) 
right(90) 
circle(-80,90) 
end_fill() 
right(135) 
forward(60) 
left(180) 
forward(85) 
left(90) 
forward(80) 
# 叶子2 
right(90) 
right(45) 
fillcolor("green") 
begin_fill() 
circle(80,90) 
left(90) 
circle(80,90) 
end_fill() 
left(135) 
forward(60) 
left(180) 
forward(60) 
right(90) 
circle(200,60) 
done()

from turtle import * 
setup(600, 400, 0, 0) 
bgcolor("red") 
fillcolor("yellow") 
color('yellow') 
speed(10) 
# 主星 
begin_fill() 
up() 
goto(-280, 100) 
down() 
for i in range(5): 
forward(150) 
right(144) 
end_fill() 
# 副星一 
begin_fill() 
up() 
goto(-100, 180) 
setheading(305) 
down() 
for i in range(5): 
forward(50) 
left(144) 
end_fill() 
# 副星二 
begin_fill() 
up() 
goto(-50, 110) 
setheading(30) 
down() 
for i in range(5): 
forward(50) 
right(144) 
end_fill() 
# 副星三 
begin_fill() 
up() 
goto(-40, 50) 
setheading(5) 
down() 
for i in range(5): 
forward(50) 
right(144) 
end_fill() 
# 副星四 
begin_fill() 
up() 
goto(-100, 10) 
setheading(300) 
down() 
for i in range(5): 
forward(50) 
left(144) 
end_fill() 
hideturtle() 
done()