How to fix “SyntaxWarning: invalid escape sequence” in Python?

I use the following prompt successfully on https://duck.ai to write a script: write Python program using libcst to automatically add r to docstrings that would raise syntax warning (invalid escape sequence) Because posting content generated by generative AI tools are not allowed, you can use the following prompt on the AI tool yourself.

https://stackoverflow.com/questions/52335970/how-to-fix-syntaxwarning-invalid-escape-sequence-in-python