def is_valid(m):
    if len(m)==18 and m.isdigit():
        return 'True'
    elif len(m)==18 and m[-1]=='X':
        return 'True'
    else:
        return 'False'

with open('D:/实验六数据文件data3_id.txt','r',encoding = 'utf-8') as f:
    data = f.readlines()
list = []
for i in data:
    data_ = i.strip('\n')
    if is_valid(data_[3:]) == 'True':
        list.append(data_)
list.sort(key=lambda x: x[9:13])
for m in list:
    print('{},{}-{}-{}'.format(m[:2],m[9:13],m[13:15],m[15:17]))

import random
import datetime
t = datetime.datetime.now()
m = eval(input('输入随机抽点人数:'))
with open('D:/实验六数据文件data5.txt', encoding = 'utf-8') as f:

    data = f.readlines()
list = []
for i in range(m):
    x = random.choice(data)
    list.append(x)
    data.remove(x)
filename = t.strftime('%Y%m%d') + '.txt'
with open(filename, "w+", encoding="utf-8") as f:
    f.writelines(list)
    f.seek(0)
    print(f.read())

with open('D:/实验六数据文件data5_1.txt','r',encoding='utf-8')as f:
    data=f.readlines()
    for i in data:
        i.strip("\n")
import datetime
t=datetime.datetime.now()
filename=t.strftime('%Y%m%d')+'txt'
print(f"{'抽点开始':=^40}")
import random
while True:
    n=int(input('输入随机抽点人数:'))
    sample=random.sample(data,n)
    for i in sample:
        data.remove(i)
    with open(filename, 'a+', encoding='utf-8') as f:
        for i in sample:
            print(i)
            f.write(i)
    if n==0:
        print(f"{'抽点结束':=^40}")
        break