Regex guide with Matching Nested Parentheses in Python - Unexpected Failures
I'm working through a tutorial and I'm trying to debug I've been struggling with this for a few days now and could really use some help..... I'm trying to match a string that contains nested parentheses while ensuring that I capture the entire content correctly. For example, given the string `"This is a test (with (nested) parentheses) and (another one)."`, I want to extract both sections within the outer parentheses, but my current regex fails to account for the nesting. I've tried using the following regex pattern: `\(([^()]*|\(([^()]*)\))*\)` but it doesn't seem to work as expected and often gives me incomplete matches or fails entirely. When I run the code, I get this output: ```python import re text = 'This is a test (with (nested) parentheses) and (another one).' pattern = r'\(([^()]*|\(([^()]*)\))*\)' matches = re.findall(pattern, text) print(matches) ``` I receive an empty list instead of the expected results. I suspect my regex might be overly complicated or that Python's `re` module has limitations in handling this use case. Does anyone have a better approach or a corrected regex pattern that can handle this scenario? I'm using Python 3.10, and I've considered looking into libraries like `regex`, but I'm hoping to find a solution with the built-in capabilities if possible. This is part of a larger application I'm building. Has anyone else encountered this? For context: I'm using Python on Ubuntu. What am I doing wrong? I'm on Windows 11 using the latest version of Python. Hoping someone can shed some light on this. Has anyone else encountered this?