Question

我之前已经知道类似的东西，但我是python的新手，我无法找到解决问题的方法：

我想做的是： 1.打开文件并逐行阅读。（我已经设法做到了） 2.在每行后添加新内容。（我想稍后将它与if语句结合起来，以便只编辑特定的行）

我的代码：

QuerySheet

之后我希望我的testfile看起来像这样：

ThisWorkbook.Worksheets

但它看起来像这样：

Option Explicit

Private Sub Workbook_Open()
    QuerySheet.Initialize
End Sub

如何让程序在每一行之后停止，然后添加新内容？

Answer 1

您可以使用readlines

with open('testfile', 'r') as file:
    # read a list of lines into data
    lines = file.readlines()

with open('testfile', 'w') as file:
    for line in lines:
        # do your checks on the line..
        file.write(line.strip() + ' checked' )

print('done')

Answer 2

我建议逐行将文件写入新文件，然后将该新文件移动到将覆盖它的原始文件：

import shutil

filename = '2017-11-02.txt'
temp_filename = 'new.txt'

with open(filename, 'r') as old, open(temp_filename, 'w') as new:
    # Go line by line in the old file
    for line in old:
        # Write to the new file
        new.write('%s %s\n' % (line.strip(),'checked'))

shutil.move(temp_filename, filename)

我根据以下内容提出了一些相关的答案：https://stackoverflow.com/a/16604958/5971137

Answer 3

testfile=open('uat_config.conf', 'r+')
readlinebyline=testfile.readlines()
for i in range(0, len(readlinebyline)):
 testfile.write("CHECKED "+ str(readlinebyline[i]))
print('done')

Answer 4

with open('file.txt', 'r') as f:
    content = f.readlines()

with open('file.txt', 'w') as f:
    for line in content:
        f.write(line.strip('\n') + ' checked\n')

逐行读取文件并为每个文件添加新内容

4 个答案: