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Editor to share with you how python regular expressions to achieve group hiding, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Group hiding

Format:

(: regular expression)

Note: if the grouping begins with?: in parentheses, the matching content will be hidden.

Also: group hiding and group naming cannot be used at the same time.

Use:

When the useful data is mixed with the useless data, it can only be taken out first, then the useless data can be grouped and hidden, and the regular expressions corresponding to the useful data can be wrapped in (), so the useful data can be extracted.

Case study:

Result1 = re.findall ('1 (\ d) (\ d)', '167189') print (result1) result2 = re.findall (' 1 (?:\ d) (\ d), '167189') print (result2) out: [(' 615,'7'), ('84th,' 9')] ['7examples,' 9'] are all the contents of the article "how python regular expressions can be grouped and hidden". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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