python turtle库设置画笔颜色异常

import turtle
import random

#turtle.setup(200,200)
len = 9
colorStr = "darkgreen" ,"purple" , "violet" , "gold"
turtle.pensize(2)
turtle.begin_fill()
for i in range(50):
turtle.seth(90)
r = random.randint(1 , 255)
g = random.randint(1 , 255)
b = random.randint(1 , 255)
turtle.pencolor(( r , g , b))
len += 3
turtle.fd(len)
len += 3
turtle.seth(180)
turtle.pencolor(colorStr[random.randint(0 , 3)])
turtle.fd(len)
len += 3
turtle.seth(270)
turtle.pencolor(colorStr[random.randint(0 , 3)])
turtle.fd(len)
len += 3
turtle.seth(360)
turtle.pencolor(colorStr[random.randint(0 , 3)])
turtle.fd(len)
turtle.end_fill()
turtle.done()

import turtle as t
# 设置画布大小
t.setup(800, 800)
# 将画笔移动到绘画点
t.goto(50, 200)

# 设置背景颜色
# rgb 红绿蓝 最小值0 最大值1
t.bgcolor((1,0,0))
# 设置填充颜色
t.fillcolor((1,1,0))
# 设置画笔颜色
t.pencolor((1,1,0))
t.pensize(2)
# 开始填充点
t.begin_fill()
for i in range(5):
    # 绘制五角星边长
    t.forward(200)
    # 转角144度
    t.right(144)
#填充内置颜色
t.end_fill()
# 等待弹窗关闭
t.done()

r,gb必须在colormode内，colormode范围是1.0或255范围，你试试1.0内

改为
r = random.random()
g = random.random()
b = random.random()