猫史档案馆

自行看：

import turtle

# turtle
t = turtle.Pen()
c = input('颜色?')
a = input('边长？')
n = input('边数？')
n = int(n)
t.color(c)
for i in range(n):
for j in range(3):
t.forward(a)
t.left(120)
t.forward(a)
t.right((360 / n))