How to match if every occurrence of . or + is happening at the end of the string

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#1

Hello community!
I would like some help regarding my solution to the exercise.

pattern = r"(?<!Series\s)((?<!\w)[Cc](?!\w))(?=.+$)"

In the last term I want my pattern to match if every occurrence of . or + is happening at the end of the
string. However my results don’t encapsulate that and I cannot understand why this is the case.

To my understanding (?=.+$) states the following:

Accept whatever is preceding if the following sub-string is equal to either the characters . or + which if they are found at the end of the string.

Thank you very much in advance.
Giannis

Regex pattern to extract C excluding patterns like C++ ,C.E.O and including where C is at the end of title
#2

Hello,

I’m no regex expert, but I’ll try to help.

If you want to select the + character, then you should use \ to scape it. The + is a special character that means you want to match one or more of the preceding character, in this case ..

Try it like this: (?=.\+$).

I also suggest you take a look at https://regexr.com/. This will help you to test the regex you’re writing.

I hope this helps you.

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#3

Thanks you very much for the pointers and your help sir!

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#4

Since the idea is to exclude either “+” or “.”, you must indicate in your forward looking statement. (?![\.\+])