IndexError: string index out of range

[Paul-hengChen]

I'm a python beginner . I'm so sorry to ask this question ， but I followed your Example usage of Science Concierge and got the error as following

' IndexError: string index out of range '

I tried many ways to fix it, but still can't solve it, could you give me some direction?, please !

[titipata]

Hi @Paul-hengChen, thanks for the report! I have the same error too. I'm fixing it now and will let you know when it's done.

[titipata]

Wow, this is a problem of the stemmer that we use from nltk. The issue can be see on this Stack Overflow post: https://stackoverflow.com/questions/41517595/nltk-stemmer-string-index-out-of-range.

So this will be the bug for nltk version 3.2.2. You can fix this by upgrading the library pip install nltk --upgrade. This will solve the problem of PorterStemmer bug that they have.

[titipata]

@Paul-hengChen, let me know if it fixes the issue. I upgraded my nltk version and the issue is resolved.

[Paul-hengChen]

I'm very thanks for your help!!!! The problem was resolved !!!!! but I got another error

RuntimeWarning: Surrogate character u'\ud880' will be ignored. 

You might be using a narrow Python build. Just like this. Where I can improve? Thank you again for your help!

[titipata]

Ah, I didn't get that error. Can you check is it just a RuntimeWarning or is it an error? It might be just warning from unidecode library.

[Paul-hengChen]

Yeah , you are right , just warning not error ! thanks for your help !!! you are so kind :) 👍

[titipata]

No problem @Paul-hengChen! Glad to help.