You can use \1 to refer to matched text grouped by () in the regex. So:

import re
my_text = 'Word word'
src_str  = re.compile('(word)', re.IGNORECASE) 
my_text = src_str.sub(r'\1xxx', my_text)
print(my_text)

dict is a built-in type, not a module that needs importing
What are you trying to accomplish, @Sway?

@edenb thanks!

Happy to see you @omz and the update!

@JITASIDA
No, you can't
That would require adding a method to a built-in type and that's not possible (without going to the C source for Python):

>>> str.clean=lambda self:'clean'+self
Traceback (most recent call last):
  File "<string>", line 1, in <module>
TypeError: can't set attributes of built-in/extension type 'str'

The error results from your lines not being well-aligned
Unindenting the x=... and y=... lines should fix it

thanks. works after pip docutils

Okay, I'll try my luck at some parts of scene

Well, no luck :-(
pygenstub will not install (pip install) at my iPad with File Not Found Error.
pip successfully downloads the .whl from pythonhosted.org, but on installing the wheel stops at an error
Version 1.2 (current version is 1.4) installs

Very welcome initiative!

I may contribute a module or two that I'm comfortable with.
In the style guide, you state "no Union[] return annotations"; does that also imply "no Optional[] return annotations"? The Pythonista modules have some.

nice :-)