I’m searching for a Regex pattern in Python 3.8 that matches a sequence of strings if and only if it’s not followed by a selection of other strings. For example, I want to match the pattern “<fruit> and <fruit>” only if the second fruit isn’t followed by “ice” or “juice”: However, this pattern has problems if the selection of strings
Tag: regex-lookarounds
regex matches string despite negative lookahead
I want to match the first 2 words in a string, except when the second one is “feat”, then I just want to match the first word. My plan: (w+(?: w+))(?!feat) does not work. “feat” gets matched everytime. I tried variations of the same, but to no avail. Here’s an example string: “Technotronic feat Ya Kid K” Thank you for
How to make my regex match stop after a lookahead?
I have some text from a pdf in one string, I want to break it up so that I have a list where every string starts with a digit and a period, and then stops before the next number. For example I want to turn this: Into this: The issue is that the original string has ‘n’ scattered in the
Regex – Negative Lookahead to match a string with any non-Chinese UTF characters
Intention to create a regex which creates a match when there is any character, ASCII, Unicode or otherwise, which does not fall into any of the valid UTF-8 ranges for Chinese characters. The match itself does not matter, but rather that the non-Chinese characters are present. Note that the presence of rare, and unused Chinese characters within the UTF-8 charset
python regex: duplicate names in named groups
Is there a way to use same name in regex named group in python? e.g.(?P<n>foo)|(?P<n>bar). Use case: I am trying to capture type and id with this regex: /(?=videos)((?P<type>videos)/(?P<id>d+))|(?P<type>w+)/?(?P<v>v)?/?(?P<id>d+)? from this strings: /channel/v/123 /ch/v/41500082 /channel /videos/41500082 For now I am getting error: redefinition of group name ‘id’ as group 6; was group 3 Answer The answer is: Python re does