在 Python 字符串中的括号前转义（插入反斜杠）

Question

I need to format many strings that contain a similar structure:

 u'LastName FirstName (Department / Subdepartment)'

My wish is to get the string to look like this:

 u'LastName FirstName \(Department / Subdepartment\)'

Meaning I need to add a backslash to the opening bracket and to the closing bracket.

So far I am doing this in Python:

  displayName = displayName.replace('(', '\(').replace(')', '\)').

Which seems OK, but I am just wondering:

Is there is a more Pythonic way to do it?

I did not find a proper way Python's String documentation , but maybe I am looking in the wrong place...

Answer 1

You've already found the most Pythonic way, regex provides a not so readable solution:

>>> import re
>>> s = u'LastName FirstName (Department / Subdepartment)'
>>> print re.sub(r'([()])', r'\\\1', s)
LastName FirstName \(Department / Subdepartment\)

Answer 2

you can use re.escape('string') .

example:

import re

escaped = re.escape(u'LastName FirstName (Department / Subdepartment)')

Note:
This method will return the string with all non-alphanumerics backslashed which includes punctuation and white-space.

Though that may be useful for you.