画圆
import turtle
r=0
while r<360:
turtle.forward(1)
turtle.right(1)
r=r+1
多边形
import turtle
sides=int(input('enter the number of sides:'))
angle=360.0/sides
length=400.0/sides
for side in range(sides):
turtle.forward(length)
turtle.right(angle)
turtle.done()
填充颜色
import turtle
sides=int(input('enter the number of sides:'))
angle=360.0/sides
length=400.0/sides
turtle.fillcolor('blue')
turtle.begin_fill()
for side in range(sides):
turtle.forward(length)
turtle.right(angle)
turtle.end_fill()
turtle.done()