实验5

#6

实验内容：

 1 #6
 2 with open('data6.csv','r',encoding='gbk') as f:
 3     f1=f.readlines()
 4     f1=list(f1)
 5 l1=[]
 6 l2=[]
 7 title=['原始数据','四舍五入后数据']
 8 info1=f1[1:]
 9 f2=[[str(eval(i)),str(round(eval(i)))] for i in info1]
10 for i in f2:
11     l1.append((i[0]))
12     l2.append(eval(i[1]))
13 with open('data6_processed.csv', 'w', encoding = 'gbk') as f:
14     f.write(','.join(title) + '\n')
15     for j in f2:
16         f.write(','.join(j)+'\n')
17 print(f'{title[0]}:')
18 print(l1)
19 print(f'{title[1]}:')
20 print(l2)

实验结果：

#7

实验内容：

 1 #7
 2 with open ('data7.csv','r',encoding='gbk') as f:
 3     data=f.readlines()
 4 l=[]
 5 l1=[]
 6 for i in data:
 7     l.append(list((i).split(',')))
 8 l[-1][-1]+='\n'
 9 l=sorted(l,key=lambda x:x[3],reverse=True)
10 with open ('data7_processed.csv', 'w', encoding = 'gbk') as f:
11     for i in l:
12         f.write(','.join(i))
13 print('    '.join(['学号','姓名','专业','分数']))
14 for i in l[1:]:
15     i[-1]=str(eval(i[-1]))
16     print('    '.join(i))

实验结果：

 #8

实验内容：

 1 #8
 2 with open ('hamlet.txt','r') as f:
 3     h=f.read()
 4 lines=h.split('\n')
 5 hs=len(lines)
 6 words=h.split()
 7 dcs=len(words)
 8 zfs=len(h)
 9 kgs=h.count(' ')
10 print('hamlet.txt粗略统计：')
11 print(f'行数：{hs}')
12 print(f'单词数：{dcs}')
13 print(f'字符数：{zfs}')
14 print(f'空格数：{kgs}')
15 c=1
16 with open('hamlet_with_line_number.txt','w') as f:
17     for i in lines:
18         f.write(f'{c} {i}+\n')
19         c+=1

实验结果：

#9

实验内容：

 1 #9
 2 def is_valid(x):
 3     x=list(x)
 4     if len(x) !=18:
 5         return False
 6     for i in x[:-2]:
 7         if i.isdigit():
 8             pass
 9         else:
10             return False
11             break
12     if str(x[-1]) in ['0','1','2','3','4','5','6','7','8','9','X']:
13         return True
14     else:
15         return False
16 
17 import datetime
18 t=datetime.datetime.now()
19 t=t.strftime('%Y%m%d')
20 
21 with open('data9_id.txt','r') as f:
22     data=f.read()
23 data=data.split('\n')
24 l=[]
25 l2=[]
26 for i in data:
27     i=i.split(',')
28     l.append(list(i))
29 for i in l[1:]:
30     if is_valid(i[1]) is True:
31         p=f'{i[1][6:10]}-{i[1][10:12]}-{i[1][12:14]}'
32         age=int(t[0:4])-int(i[1][6:10])
33         if int(t[4:8])-int(i[1][10:14])>=0:
34             age+=1
35         else:
36             age-=1
37         l2.append([i[0],p,age])
38 l2=sorted(l2,key=lambda x:x[2],reverse=True)
39 print('姓名， 出生日期， 年龄')
40 for i in l2:
41     print(f'{i[0]}, {i[1]}, {i[2]}')

实验结果：

#10

实验内容：

 1 import datetime
 2 import random
 3 t=datetime.datetime.now()
 4 t=t.strftime('%Y%m%d')
 5 
 6 with open ('data10_stu.txt','r') as f:
 7     stu=f.read()
 8 stu=stu.split('\n')
 9 
10 l=[]
11 for i in stu:
12     l.append(i)
13 c=[i for i in range(0,len(l))]
14 n=int(input('输入随机抽点人数：'))
15 for i in range(n):
16     j=random.sample(c,5)
17 
18 with open (f'{t}.txt','w') as f:
19     for i in j:
20         print(l[i])
21         f.write(l[i]+'\n')

实验结果：