实验4

x = []
f = open(‘C:\\Users\\J&K\\Desktop\\实验4文档相关代码和数据文件\\实验4文档相关代码和数据文件\\data6_1.txt‘, encoding=‘utf_8‘)
y = f.readlines()
for i in y:
    x.append(i.strip().split())
a = lambda b: int(b[2])
x.sort(key=a, reverse=True)
for i in x:
    print(‘ ‘.join(i)+‘\n‘)
f.close()
f = open(‘C:\\Users\\J&K\\Desktop\\实验4文档相关代码和数据文件\\实验4文档相关代码和数据文件\\data6_2.txt‘, ‘w‘, encoding=‘utf_8‘)
for i in x:
    f.write(‘ ‘.join(i)+‘\n‘)
f.close()

x = eval(input(print(‘请输入抽点人数：‘)))
f = open(‘C:\\Users\\J&K\\Desktop\\实验4文档相关代码和数据文件\\实验4文档相关代码和数据文件\\data7.txt‘)
y = f.readlines()
z = []
for i in y:
    z.append(i.strip().split())
rolled = []
while len(rolled) < x:
    import random

    a = random.randint(1, 80)
    if a not in rolled:
        rolled.append(a)
for i in rolled:
    print(y[i])
f.close()

import datetime

t = datetime.datetime.now()
time = t.strftime(‘%Y%m%d‘)
f = open(‘C:\\Users\\J&K\\Desktop\\实验4文档相关代码和数据文件\\实验4文档相关代码和数据文件\\‘+time+‘.txt‘, ‘w‘)
for i in rolled:
    f.write(y[i])
f.close()