python turtle我想用五种颜色画五个圆，并且用画圆周的颜色填充，老是出问题，怎么回事，怎么修改？

from?turtle?import?*

colors?=?['red',?'blue',?'green',?'yellow',?'orange',?'purple']

def?circle():

for?i?in?range(36):

forward(20)

left(10)

for?i?in?colors:

color(i)

begin_fill()

circle()

end_fill()

left(60)