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string = 'get selected items from the list'

lst_keywords = ['list', 'selected', 'python', 'subset']

res = [ele for ele in lst_keywords if(ele in string)] 

then res = ['list', 'selected']

But I only want the first occurrence of element present in the string, like in the string since selected comes first I just want res to output selected only excluding the list element from res.

Any ideas of how I can achieve that?

tobsob
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S L SREEJITH
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    `next(ele for ele in lst_keywords if ele in string)` – Chris_Rands Sep 24 '19 at 10:52
  • @Christ_Rands @OP How does it answer the question? It gives the first item from `lst_keywords` that is in the string, i.e. "list"; it does *not* output the element (word) that is *first* in the string ("selected"). The latter appears what is being asked, given the penultimate paragraph. – 9769953 Sep 24 '19 at 11:43

1 Answers1

1

Code

string = 'get selected items from the list'
lst_keywords = ['list', 'selected', 'python', 'subset']
v_ = [str1 for str1 in string.split() if str1 in lst_keywords][0]
print(v_)

Result

selected
AnswerSeeker
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  • Yup, the preferred way is what you have mentioned. – AnswerSeeker Sep 25 '19 at 03:05
  • Hey @AnswerSeeker, thanks for that answer , just want to know if I add one more element in lst_keywords like 'get selected' so now I have 5 items in the list and from the raw string since 'get selected' comes first so it should output that element from the list. – S L SREEJITH Sep 27 '19 at 11:24
  • For two connected words, algorithm will have to apply bigrams and perform a search. – AnswerSeeker Sep 30 '19 at 02:47