Question

我有一个巨大的文件，如下所示：

Name: Block of line 1
Data: Block of line 2
**Important line 3**
Not important line 4
Not important line 5
**Another important line 6**
Not important line 7

Name: Block of line 1
Data: Block of line 2
**Important line 3**
Not important line 4
Not important line 5
**Another important line 6**
Not important line 7

Name: Block of line 1
Data: Block of line 2
**Important line 3**
Not important line 4
Not important line 5
**Another important line 6**
Not important line 7

在python中我想读第3行和第6行或当我使用.read（）时会使它成为第2行和第5行

我的代码只打印第一个块，所以理想情况下我想循环它：

files = open(fo, 'r')
for i, line in enumerate(files):
    if i == 2:
    print line
elif i == 5:
        print line
        break

Answer 1

files = open(fo, 'r')
for i, line in enumerate(files):
    if i%8 == 2:
        print line
    elif i%8 == 5:
        print line

这应该有效，这需要i mod 8，因为看起来每个块长8行。不是最好的解决方案，您应该将数据保持在稍微整洁的格式。

甚至更简单：

files = open(fo, 'r')
for i, line in enumerate(files):
    if i%8 == 2 or i%8 == 5:
        print line

阅读第3行文件然后每行

1 个答案: