Python随机点名神器

import random
import easygui
import turtle
import time
import pygame
import pyttsx3
import pyttsx3.drivers
import pyttsx3.drivers.sapi5
engine = pyttsx3.init()  # 初始化
rate = engine.getProperty('rate')
engine.setProperty('rate', rate - 55)
students= []
# students = ["tom", "jerry", "jack", "bob"]
# count = len(students)
file = open("student.txt")
for stu_name in file.readlines():
    students.append(stu_name.strip())
count= len(students)
while True:
    btn = easygui.buttonbox(" 点名请按开始，退出请按退出", "随机点名系统", ("开始", "退出"))
    if btn=="开始":
        #背景音效
        pygame.init()
        music = pygame.mixer.music.load('bg.mp3')
        pygame.mixer.music.play(-1, 100)
        screen = pygame.display.set_mode((1, 1))

        rand = random.randint(0, count-1)
        turtle.goto(0,0)
        turtle.up()
        turtle.hideturtle()
        #easygui.msgbox(students[rand], "Roll")
        for i in range(50):
            turtle.clear()
            turtle.write(students[(i+rand)%count],move=False,align="center",font=("Arial",40,"normal"))
            time.sleep(0.1)
        turtle.goto(0,80)
        turtle.write("请答题", move=False, align="center", font=("Arial", 40, "normal"))
        #背景音乐停止
        pygame.mixer.music.stop()
        txt = students[(i+rand)%count]
        engine.say("请答题"+txt)
        engine.runAndWait()  # 运行并且等待
        students.pop((i+rand)%count)
        count=len(students)
    else:
        break