用python海龟画一个三角形

import turtle

def draw_triangle(side_length):#triangle def

for x in range (3):

turtle. left(120)

turtle. forward(side_length)

return None

def jump(distance):#jump definition

turtle. penup()

turtle. forward(distance)

turtle. pendown()

return None

def color_triangle(side_length, color):#makes the triangle color filled

turtle. fillcolor()

turtle. begin_fill()

draw_triangle(size)

turtle. end_fill()

return None

color_a= input("choose a color for the first triangle ")

color_b= input ("choose a color for the second triangle ")

color_c= input("choose a color for the third triangle ")

back_color= input ("choose a color for the backround ")

my_colors= []

if color_a not in my_colors:

my_colors . append (color_a)

if color_b not in my_colors:

my_co

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