list of regex special characters

[goldtech]

I am looking for a list of special character in python regular
expressions that need to be escaped if you want their literal meaning.

I searched and can not find the list. Any help appreciated.

 

[Tim Chase]

I am looking for a list of special character in python regular
expressions that need to be escaped if you want their literal meaning.

I searched and can not find the list. Any help appreciated.

Trust the re module to tell you:

>>> import re
>>> chars = [chr(i) for i in range(0,256)]
>>> escaped = [c for c in chars if re.escape(c) != c]
>>> print len(escaped) 194
>>> print escaped [...]
>>> can_use_unescaped = [c for c in chars if re.escape(c) == c]

(adjust "chars" accordingly if you want to check unicode
characters too).

-tkc