用代码制作一个外围带有360°刻度线的圆，在圆心处有1个90°的扇形框，分别标识为G1。在圆上有1个随机的黑点，此系统拥有翻转按钮，若G1可以覆盖黑点，就将其移动到黑点处，并将G1变成红色

以下是Python代码实现：

import turtle
import random

# 绘制圆形
def draw_circle(radius):
    turtle.penup()
    turtle.goto(0, -radius)
    turtle.pendown()
    turtle.circle(radius)

# 绘制刻度线
def draw_scale(radius):
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(90)
    for i in range(36):
        turtle.forward(radius)
        turtle.pendown()
        turtle.forward(10)
        turtle.penup()
        turtle.goto(0, 0)
        turtle.right(10)

# 绘制扇形框
def draw_sector(radius):
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("white")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, 90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("red")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, 90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()
    turtle.penup()

# 绘制黑点
def draw_dot(radius):
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(random.randint(0, 359))
    turtle.forward(radius)
    turtle.dot(10, "black")

# 移动扇形框并变色
def move_sector(radius):
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("white")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, 90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("red")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, 90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("red")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, -90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()

# 翻转扇形框
def flip_sector(radius):
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("white")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, 90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()
    turtle.penup()
    turtle.goto(0, 0)
    turtle.setheading(0)
    turtle.pendown()
    turtle.fillcolor("red")
    turtle.begin_fill()
    turtle.forward(radius)
    turtle.right(90)
    turtle.circle(radius, -90)
    turtle.right(90)
    turtle.forward(radius)
    turtle.right(180)
    turtle.end_fill()

# 初始化画布
turtle.setup(800, 800)
turtle.bgcolor("white")
turtle.speed(0)

# 绘制圆形和刻度线
draw_circle(300)
draw_scale(300)

# 绘制扇形框
draw_sector(300)

# 绘制黑点
draw_dot(300)

# 等待用户翻转扇形框
turtle.onkey(lambda: flip_sector(300), "space")
turtle.listen()

# 移动扇形框和变色
if turtle.distance(0, 0) < 290:
    move_sector(300)

turtle.done()