CODEWITHSUNDEEP
regexlistcountcpu-word
user1199838
user1199838

Reputation: 103

Regex: Count matches from list of words

I'm trying to get the right syntax for getting the number of matches from list of words example:

List: (US,UK,Greece,Germany,Nigeria,Brazil)

The text is: "Cake returns put Brazil Welcome Stack to between paragraphs Argentina Overflow UK"

I would like to know how many words from the list above appear in this text with a regex pattern. Alternative, I would like to know if there more than 1 match from the list in the text

Is it possible to do that with Regex?

Upvotes: 2

Views: 1367

Answers (1)

Tim Pietzcker
Tim Pietzcker

Reputation: 336478

In Python:

>>> import re
>>> countries = re.compile(r"\b(?:US|UK|Greece|Germany|Nigeria|Brazil)\b")
>>> text = "Cake returns put Brazil Welcome Stack to between paragraphs Argentina Overflow UK"
>>> len(countries.findall(text))
2

Explanation:

\b      # Word boundary (start of word)
(?:     # Match either...
 US     # US
|       # or
 UK     # UK
|       # or
 Greece # Greece (etc.)
)       # End of alternation
\b      # Word boundary (end of word)

Upvotes: 2

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