利用turtle库绘制四个圆形螺旋，颜色为红、绿、蓝、黄

好的，以下是利用turtle库绘制四个圆形螺旋的代码，颜色为红、绿、蓝、黄：

import turtle

# 创建画布和画笔
canvas = turtle.Screen()
pen = turtle.Turtle()

# 设置画笔颜色和画布背景色
pen.width(3)
canvas.bgcolor("black")

# 绘制红色圆形螺旋
pen.penup()
pen.goto(-200, 0)
pen.pendown()
pen.pencolor("red")
for i in range(100):
    pen.circle(5*i)
    pen.left(10)

# 绘制绿色圆形螺旋
pen.penup()
pen.goto(0, 0)
pen.pendown()
pen.pencolor("green")
for i in range(100):
    pen.circle(5*i)
    pen.left(10)

# 绘制蓝色圆形螺旋
pen.penup()
pen.goto(200, 0)
pen.pendown()
pen.pencolor("blue")
for i in range(100):
    pen.circle(5*i)
    pen.left(10)

# 绘制黄色圆形螺旋
pen.penup()
pen.goto(0, -200)
pen.pendown()
pen.pencolor("yellow")
for i in range(100):
    pen.circle(5*i)
    pen.left(10)

# 隐藏画笔
pen.hideturtle()

# 显示画布
canvas.mainloop()

运行上述代码，即可在画布上看到绘制出的四个圆形螺旋，颜色分别为红、绿、蓝、黄。