移除了无用的库，小优化

点名器.pyw

@@ -3,9 +3,7 @@ from tkinter import *
 import tkinter.messagebox as msgbox
 import random
 import sys
-import win32con, win32api
 import winsound
-import time
 
 filename = "./data/names.xls"
 configname = "./data/config.data"
@@ -119,8 +117,6 @@ for i in range(elim_rows,rows):
         student = Student(tmp_list[0],tmp_list[1],tmp_list[2],tmp_list[3])
         students.append(student)
 
-cur_stu = []
-
 cur_stu = students[:]
 
 for student in students:
@@ -164,8 +160,6 @@ def sel_class(flag = 1):
         filter = classes[:]
         cur_stu = students[:]
 
-
-
 def choose():
     global last_choice, cur_stu
     sel_class(0)
@@ -206,11 +200,8 @@ def choose():
         winsound.PlaySound(selname, winsound.SND_ASYNC | winsound.SND_FILENAME)
 
 startrandom = Button(gui, text = "立刻摇人!", font = ("宋体", 17, "bold"), height = 2, fg = "red", command = choose, bg = "white")
-
 setclass = Button(gui, text = "应用班级选用", font = ("宋体", 17), height = 2, command = sel_class, bg = "white")
-
 scrool = Scrollbar(gui, command = listbox.yview)
-
 listbox.config(yscrollcommand=scrool.set)
 
 name_label = Label(gui, textvariable = cur_name, font = ("宋体", 30, "bold"), width = 20, bg = "white", fg = "blue")