python - 在 Python 中删除多行

Question

我有一个看起来像这样的文件:

<VirtualHost *:80>
    ServerName Url1
    DocumentRoot Url1Dir
</VirtualHost>

<VirtualHost *:80>
    ServerName Url2
    DocumentRoot Url2Dir
</VirtualHost>

<VirtualHost *:80>
    ServerName REMOVE
</VirtualHost>

<VirtualHost *:80>
    ServerName Url3
    DocumentRoot Url3Dir
</VirtualHost>

我想删除这段代码的地方(它不会改变):

<VirtualHost *:80>
    ServerName REMOVE
</VirtualHost>

我试图通过使用下面的代码找到整段代码，但它似乎不起作用。

with open("out.txt", "wt") as fout:
        with open("in.txt", "rt") as fin:
            for line in fin:
                fout.write(line.replace("<VirtualHost *:80>\n    ServerName REMOVE\n</VirtualHost>\n", ""))

Answer 1

最快的方法是将整个文件读入一个字符串，执行替换，然后将字符串写入您需要的文件。例如:

#!/usr/bin/python

with open('in.txt', 'r') as f:
      text = f.read()

      text = text.replace("<VirtualHost *:80>\n    ServerName REMOVE\n</VirtualHost>\n\n", '')

      with open('out.txt', 'w') as f:
            f.write(text)