实验五 文件应用编程

实验任务6

task6:

源代码：

 1 import csv
 2 with open(r'C:\Users\LENOVO\Desktop\python\data6.csv','r',encoding = 'gbk') as f:
 3     data = f.readlines()
 4 
 5 data1 = [i.strip('\n') for i in data]
 6 data2 = [eval(j) for j in data1[1:]]
 7 print(f'{data1[0]}:\n{data2}')
 8 
 9 data3 = [int(y+0.5) for y in data2]
10 title = [data1[0]]
11 title.append('四舍五入后数据')
12 file = []
13 for z in range(len(data2)):
14     a = []
15     a.append(str(data2[z]))
16     a.append(str(data3[z]))
17     file.append(a)
18 
19 print(f'{title[1]}:\n{data3}')
20 
21 with open(r'C:\Users\LENOVO\Desktop\python\data6.csv','w',encoding = 'gbk',newline='') as f:
22     content = csv.writer(f)
23     content.writerow(title)
24     content.writerows(file)

运行结果：

 

 

实验任务7

task7:

源代码：

 1 import csv
 2 
 3 with open(r'C:\Users\LENOVO\Desktop\python\data7.csv','r',encoding='gbk') as f:
 4     data = f.readlines()
 5 
 6 data = [i.strip('\n') for i in data]
 7 title = data[0].split(',')
 8 
 9 del data[0]
10 data = [i.split(',') for i in data]
11 
12 id_name_major_score = {}
13 for i in data:
14     data1 = i[1:]
15     id_name_major_score[i[0]] = data1
16 
17 print(f'{title[0]:8s}{title[1]:8s}{title[2]:8s}{title[3]:8s}')
18 data2 = sorted(id_name_major_score.items(),key = lambda x:x[1][2],reverse=True)
19 for j in data2:
20     print(f'{j[0]:8s}{j[1][0]:8s}{j[1][1]:8s}{j[1][2]:8s}')
21 
22 data3 = []
23 for y in data2:
24     a = [y[0]]
25     a.append(y[1][0])
26     a.append(y[1][1])
27     a.append(y[1][2])
28     data3.append(a)
29 with open(r'C:\Users\LENOVO\Desktop\python\data7.csv','w',encoding='gbk',newline='') as f:
30     content = csv.writer(f)
31     content.writerow(title)
32     content.writerows(data3)

运行结果：

 

实验任务8

task8:

源代码：

 1 with open(r'C:\Users\LENOVO\Desktop\python\hamlet.txt','r',encoding='utf-8') as f:
 2     data = f.readlines()
 3 
 4 hang = len(data)
 5 
 6 data1 = ''
 7 for line in data:
 8     data1 += line
 9 al = len(data1.split())
10 blanket = data1.count(' ')
11 a,b = 0,0
12 for i in data1:
13     if i.isalpha():
14         a += 1
15     else:
16         b += 1
17 string = a+b
18 
19 print(f'行数:{hang}\n单词数:{al}\n字符数:{string}\n空格数:{blanket}')
20 data2 = []
21 num = [str(i) for i in range(1,hang+1)]
22 for i in range(1,hang+1):
23     a = num[i-1]+' '+data[i-1]
24     data2.append(a)
25 
26 with open(r'C:\Users\LENOVO\Desktop\python\hamlet_with_line_number.txt','w',encoding='utf-8') as f:
27     f.writelines(data2)

运行结果：

 

实验任务9

task9：

源代码：

 1 with open(r'C:\Users\LENOVO\Desktop\python\data9_id.txt','r',encoding='utf-8') as f:
 2     data = f.readlines()
 3 
 4 def is_valid(n):
 5     length = len(n)
 6     if length == 18:
 7         al = n.count('X')
 8         if al == 0:
 9             return True
10         elif al == 1:
11             w = n.index('X')
12             if w == 17:
13                 return True
14             else:
15                 return False
16         else:
17             return False
18 data1 = [i.strip('\n') for i in data]
19 del data1[0]
20 data2 = [i.split(',') for i in data1]
21 name_id = {}
22 for i in data2:
23     id = i[1]
24     if is_valid(id) == True:
25         name_id[i[0]] = id
26 
27 name_data_age = {}
28 for key,j in name_id.items():
29     time = j[6:10]+'-'+j[10:12]+'-'+j[12:14]
30     ages = str(2023-int(j[6:10]))
31     name_data_age[key] = time,ages
32 
33 print('姓名，出生日期，年龄')
34 data3 = sorted(name_data_age.items(),key = lambda x:x[1][1],reverse=True)
35 for i in data3:
36     print(f'{i[0]},{i[1][0]},{i[1][1]}')

运行结果：

 

实验任务10

task10-1：

源代码：

 1 import datetime
 2 import random
 3 
 4 n = eval(input('输入随机抽点人数：'))
 5 data = datetime.datetime.now()
 6 filename = data.strftime('%Y%m%%d') + '.txt'
 7 
 8 with open(r'C:\Users\LENOVO\Desktop\python\data10_stu.txt','r',encoding='utf-8') as f:
 9     data1 = f.readlines()
10 
11 def random_n(n):
12     data2 = random.sample(data1,n)
13     return data2
14 
15 data3 = random_n(n)
16 for i in data3:
17     print(i.strip('\n'))
18 
19 with open(r'C:\Users\LENOVO\Desktop\python\filename','w',encoding='utf-8') as f:
20     f.writelines(data3)

运行结果：

task10-2：

源代码：

 1 import datetime
 2 import random
 3 
 4 print('*'*20+'抽点开始'+'*'*20)
 5 
 6 data = datetime.datetime.now()
 7 filename = data.strftime('%Y%m%%d') + '.txt'
 8 
 9 with open(r'C:\Users\LENOVO\Desktop\python\data10_stu.txt','r',encoding='utf-8') as f:
10     data1 = f.readlines()
11 
12 def random_n(n):
13     data2 = random.sample(data1,n)
14     return data2
15 
16 while True:
17     n = eval(input('输入随机抽点人数：'))
18     if n!=0:
19         data3 = random_n(n)
20         for i in data3:
21             print(i.strip('\n'))
22 
23         with open(r'C:\Users\LENOVO\Desktop\python\filename','w',encoding='utf-8') as f:
24             f.writelines(data3)
25     else:
26         print('*'*20+'抽点结束'+'*'*20)
27         break

 

 

运行结果：

 

posted on 2023-06-07 02:08  DTong  阅读(7)  评论(0)  编辑  收藏  举报

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