正则表达式：如何匹配包含“\n”的字符串（换行）？
我正在尝试使用正则表达式从 SQL 导出文件转储数据。为了匹配帖子内容的字段，我使用“(?P”。大多数情况下它工作正常，但如果该字段包含“\n”字符串，则正则表达式将不匹配。如何修改正则表达式以匹配它们？谢谢！
示例（我使用的是Python）：
>>> re.findall("'(?P<content>.*?)'","'<p>something, something else</p>'")
['<p>something, something else</p>']
>>> re.findall("'(?P<content>.*?)'","'<p>something, \n something else</p>'")
[]
PS 似乎所有前面带有“\”的字符串都被视为转义字符。我如何告诉 regx 按原样对待它们？
I'm trying to dump data from a SQL export file with regular expression. To match the field of post content, I use '(?P<content>.*?)'. It works fine most of the time, but if the field contains the string of '\n' the regular expression wouldn't match. How can I modify the regular expression to match them? Thanks!
Example(I'm using Python):
>>> re.findall("'(?P<content>.*?)'","'<p>something, something else</p>'")
['<p>something, something else</p>']
>>> re.findall("'(?P<content>.*?)'","'<p>something, \n something else</p>'")
[]
P.S. Seemingly all strings with '\' in the front are treated as escape characters. How can I tell regx to treat them as they are?
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您应该使用
DOTALL选项：请参阅 这个。
You should use
DOTALLoption:See this.
您需要 Dotall 修饰符，以使点也匹配换行符。
请参阅在 docs.python.org 上
You need the Dotall modifier, to make the dot also match newline characters.
See it here on docs.python.org