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Regex Not Capturing Nested Parentheses in Python - advanced patterns

👀 Views: 153 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-05
regex python string-manipulation Python

I'm prototyping a solution and After trying multiple solutions online, I still can't figure this out. I'm working on a project where I need to extract content from strings that include nested parentheses. I've been using Python's `re` module, but my current regex pattern isn't capturing the nested structures correctly. For example, given the string: ``` This is a test (with (nested) parentheses) to see if it works. ``` I want to extract `with (nested) parentheses` but instead, my current regex pattern only captures `with `. I've tried the following regex pattern: ```python pattern = r'\(.*?\)' ``` This pattern returns `with `, and I'm not sure how to modify it to correctly handle the nested parentheses. When I attempt to replace it with a non-greedy quantifier or even try using recursion in regex, I run into complexities. I've also attempted: ```python pattern = r'\((?:[^()]+|\(.*?\))*?)\)' ``` This throws an behavior about a `too many nested parentheses` scenario. I am currently using Python 3.9.1, and my goal is to ensure that all levels of nested parentheses can be captured without errors. Any suggestions on how to build a regex pattern that can handle this, or are there better approaches to consider? Thanks in advance! Is there a better approach? I'm open to any suggestions.