实验5 文件应用编程

task1_1.py

with open('data1_1.txt', 'r', encoding = 'utf-8') as f:
    data = f.readlines()

n = 0
for line in data:
    if line.strip('\n') == '':
        continue
    n += 1
print(f'共{n}行')

 

task1_2.py

1 with open('data1_1.txt', 'r', encoding = 'utf-8') as f:
2     data = f.readlines()
3 
4 n = 0
5 for line in data:
6     if line.strip('\n') == '':
7         continue
8     n += 1
9 print(f'共{n}行')

task1_3.py

1 with open('data1_2.txt', 'r', encoding = 'utf-8') as f:
2     n = 0
3     for line in f:
4         if line.strip() == '':
5             continue
6         n += 1
7 print(f'共{n}行')

 

task1_4.py

with open('data1_2.txt', 'r', encoding = 'utf-8') as f:
    n = 0
    for line in f:
        if line.isspace():
            continue
        n += 1
print(f'共{n}行')

 

task2.py

 1 with open('data2.txt', 'r', encoding = 'utf-8') as f:
 2     data = f.read().split('\n')
 3 
 4 unique_line = []
 5 for line in data:
 6     if data.count(line) == 1:
 7         unique_line.append(line)
 8 
 9 print(f'共{ len(unique_line) }独特行')
10 for i in unique_line:
11     print(i)

 

task3.py

 

 1 with open('data3.txt','r',encoding='utf-8') as f :
 2     with open('data3_processed.txt', 'w', encoding='utf-8') as f1:
 3         data=f.read().strip().split('\n')
 4         data.pop(0)
 5         data1=[eval(i) for i in data]
 6         data2=[]
 7         for i in data1:
 8             if i - int(i) >= 0.5:
 9                 data2.append(int(i) + 1)
10             else:
11                 data2.append(int(i))
12         data3=[int(i)for i in data2]
13         f1.write(f'原始数据\t四舍五入后的数据\n')
14         for j in range(len(data)):
15             f1.write(f'{data1[j]}\t\t{data2[j]}\n')
16 print(f'原始数据:\n{data1}\n四舍五入后的数据:\n{data2}')

 

task4.py

 1 with open('data4.txt','r',encoding='utf-8')as f:
 2     with open('data4_processed.txt','w',encoding='utf-8')as f1:
 3         data=f.readlines()
 4         data1=[i.strip('\n').split('\t') for i in data]
 5         x=data1.pop(0)
 6         data2=[sorted(data1,key=lambda x: (x[2], -int(x[3])))]
 7         print('\t\t'.join(x))
 8         f1.write('\t\t'.join(x)+'\n')
 9         for i in data2:
10             for j in i:
11                 print('\t'.join(j))
12                 f1.write('\t'.join(j)+'\n')

 

task5.py

 1 with open('data5.txt','r',encoding='utf-8')as f:
 2     with open('data5_with_line.txt', 'w', encoding='utf-8') as f1:
 3         a=f.read().strip('\n')
 4         b = len(a.splitlines())
 5         print('行数:', b)
 6         e = len(a.split())
 7         print('单词数:', e)
 8         c = 0
 9         for c, number in enumerate(a):
10             c += 1
11         print('字符数:', c)
12         d = 0
13         for i in a:
14             if i == ' ':
15                 d += 1
16         print('空格数:', d)
17         a=a.split('\n')
18         n='\n'.join(a)

posted @ 2022-05-16 23:44  velpro1129  阅读(28)  评论(1)  编辑  收藏  举报