实验任务1：
1 def is_valid(x):
2 if len(x)==18:
3 if x[-1]=='Y':
4 return False
5 else:
6 return True
7 else:
8 return False
9
10 with open('C:\\Users\\可可子\\Desktop\\实验6数据文件\\data3_id.txt','r',encoding='utf-8') as f:
11 data=f.readlines()
12 del data[0]
13 new=[]
14
15 for i in data:
16 datas=i.strip('\n').split(',')
17 if is_valid(datas[1]) == True:
18 new.append(datas)
19 new.sort(key=lambda x:int(x[1][6:10]))
20 for i in new:
21 print(f'{i[0]},{i[1][6:10]}-{i[1][10:12]}-{i[1][12:14]}')
实验任务2：
1 import random
2 import datetime
3 f=open('C:\\Users\\可可子\\Desktop\\实验6数据文件\\data5.txt','r',encoding='utf-8')
4 t=datetime.datetime.now()
5 filename=t.strftime('%Y%m%d') + ('.txt')
6
7
8 with open(filename,'w',encoding='utf-8') as g:
9 data=f.readlines()
10 x=int(input('输入随机抽点人数：'))
11 new_data=random.sample(data,x)
12
13 for i in new_data:
14 print(i.strip('\n'))
15
16 f.close()
实验任务3：
1 print(f"{'抽点开始':=^40}")
2 import random
3 import datetime
4 f=open('C:\\Users\\可可子\\Desktop\\实验6数据文件\\data5.txt','r',encoding='utf-8')
5 t=datetime.datetime.now()
6 filename=t.strftime('%Y%m%d') + ('.txt')
7
8
9
10 a=[]
11 data=f.readlines()
12 while True:
13 x=int(input('输入随机抽点人数：'))
14 if x==0:
15 break
16 else:
17 new_data=random.sample(data,x)
18 for i in new_data:
19 print(i.strip('\n'))
20 a.append(i)
21
22
23
24 print(f"{'抽点结束':=^40}")
25 f.close()
26
27
28
29 with open(filename,'w',encoding='utf-8') as g:
30 b=set(a)
31 for j in a:
32 g.write(j)
