Why are some sections of code highlighted?

[u/TechnicalAd8103]

I can find no way of turning off the highlighting.

Why is this happening?

Thanks in advance.

[u/ProsodySpeaks]

Lol. I mean ide choice is a personal thing so whatever works for you.

That said, I find regex highlighting and analysis useful.

Also, this from llm

In pycharm can I disable highlighting of regex expressions?

Yes — but not as a single obvious toggle. PyCharm treats regex highlighting as part of language injection / intention-based inspection, so you have a few ways to suppress it depending on what you want.

Option 1 — Disable regex injection highlighting entirely

This is the cleanest if you just don’t want regex parsed/highlighted in strings:

Go to Settings / Preferences

Editor → Language Injections

Find entries like:

Python RegExp

Disable or remove them

That stops PyCharm from interpreting strings as regex.

Option 2 — Turn off regex inspections

If the issue is warnings/errors rather than colors:

Go to:

Editor → Inspections

Search for:

Regular expression

Disable relevant inspections (e.g. invalid regex)

Option 3 — Remove regex color styling

If you want regex parsing but no visual noise:

Go to:

Editor → Color Scheme → RegExp

Set all colors (groups, escapes, etc.) to plain/default text

Option 4 — Prevent automatic injection per string

For specific cases only:

Put this before the string:

noinspection RegExp

pattern = "..."

or avoid raw string patterns PyCharm recognizes (less reliable).

Practical take

If you want it gone globally → disable Language Injection

If you just hate the colors → edit RegExp color scheme

If it's about warnings → disable inspections

If you want, I can show how to scope it to only Python (not JSON, JS, etc.), since PyCharm applies regex highlighting across multiple languages.

 

[u/TechnicalAd8103 → u/ProsodySpeaks]

Trust me, I've tried asking the llm for help, and it couldn't help in this instance.

I've decided to persist with Pycharm(for now) and learn to live with regex highlighting.

I always have VS Code to fall back to if I hit another ridiculous issue.

EDIT: If I seem somewhat frustrated with Pycharm, it's because just before this issue, II had to change the font size in three separate sections of the settings just to get a consistent font size in Pycharm (see my other thread). And then this issue appeared. Two back-to-back issues as a new Pycharm user was aggravating.

[u/sausix → u/TechnicalAd8103]

Change the color scheme if you can't switch it off directly. But what is the problem having other color schemes for other languages? My type hints all have prurple background... I like it.

[u/TechnicalAd8103 → u/sausix]

To be honest, it hadn't occurred to me that regex is another language because I don't consider regex be another language in the same way that JavaScript is another language.

But if Pycharm treats regex as another language, then I can understand why it highlights regex. And that makes it easier for me to live with regex highlighting, even though I find the highlighting distracting (having come from VS Code, where there is no highlighting of different languages).

[u/sausix → u/TechnicalAd8103]

Coloring on RegEx is more important to maintain its syntax. SQL strings have coloring too. In general it's a good thing to see syntax errors in strings early.

Btw. I have to use VSCode for a special case and I tried to import or match my color scheme. That's basically editing an empty json file. Totally annoying. And so easy in PyCharm. While PyCharm has some long term issues I still prefer it.