第一次作业

蟒蛇
from turtle import *
setup(800,800,200,200)
penup()
fd(-10)
pendown()
pensize(20)
pencolor("blue")
seth(10)
colors=["blue","green","yellow","red"]
for i in range(4):
    color(colors[i])
    circle(40,80)
    circle(-40,80)
pencolor("violet")
circle(40,40)
fd(40)
circle(16,180)
fd(40*2/3)

无角正方形
import turtle
turtle.setup(600,400,200,200)
turtle.pensize(2)
turtle.pencolor("blue")
turtle.pendown()
turtle.fd(80)
turtle.penup()
turtle.seth(90)
turtle.fd(10)
turtle.pendown()
turtle.fd(80)
turtle.left(90)
turtle.penup()
turtle.fd(16)
turtle.pendown()
turtle.fd(60)
turtle.penup()
turtle.left(90)
turtle.fd(10)
turtle.pendown()
turtle.fd(70)

六角形
from turtle import *
setup(600,600,200,200)
pensize(2)
penup()
fd(-50)
pendown()
pencolor("blue")
seth(30)
fd(120)
seth(-90)
fd(120)
seth(150)
fd(120)
seth(30)
fd(40)
seth(90)
fd(40)
seth(-30)
fd(120)
seth(-150)
fd(120)
seth(90)
fd(80)