实验6

import random
n = eval(input('输入抽取数目：'))
with open('C:\\Users\\肖鑫\\Desktop\\实验6数据文件\\实验6数据文件\\data5.txt','r',encoding='utf-8') as f:
    x = []
    for line in f:
        x.append(line.strip('\n'))
    print(x)
    data = random.sample(x, n)
    for i in data:
        print(i)
import datetime
t = datetime.datetime.now()
filename = t.strftime('%Y%m%d') + '.txt'
print(filename)
with open(filename,'a',encoding='utf-8')as f:
    for j in data:
        f.write(j)

 

 

with open('C:\\Users\\肖鑫\\Desktop\\实验6数据文件\\实验6数据文件\\data3_id.txt','r',encoding='utf-8') as f:
    data = f.readlines()
def is_valid(x):
    if len(x) != 18:
        return False
    else:
        for i in x:
            if '0' <= i <= '9' or i == 'X': continue
            return False
    return True

data0 =data[1::]
data0=[line .rstrip('\n' ).split(',') for line in data0]
data1=[]
for i in range (len(data0)):
    if is_valid(data0[i][1])==True:
        data1. append(data0[i])
print(data1)
for i in range(len(data1)):
    data2 = data1[i][0]+data1[i][1][6:14]
    i = i + 1
    data3 = [data2[0:2],',',data2[2:6],'-',data2[6:8],'-',data2[8:10]]
    data4 = ''.join(data3)
    print(data4)

 

 （按年龄排序用lambda函数，本人还需钻研钻研一下。待更。）