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This article mainly introduces "how to use Python to filter special characters such as punctuation marks in text". In daily operation, I believe many people have doubts about how to use Python to filter special characters such as punctuation marks in text. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to use Python to filter special characters such as punctuation marks in text". Next, please follow the editor to study!

Many times we need to filter out special characters such as punctuation marks. Although there are a lot of methods on the Internet, we have not found a very satisfactory one. Some cannot filter Chinese punctuation marks, some cannot filter English punctuation marks, and some of them are not filtered completely.

Finally, by looking at the regular expression document, we find an efficient way to do it with a single line of code:

Def replace_all_blank (value): "remove all non-alphabetic content in value, including punctuation, spaces, line feeds, underscores, etc.: param value: what needs to be processed: return: returns the processed content" #\ W means matching the non-numeric letter underscore result = re.sub ('\ alphabetic,', value). Replace ("_",') print (result) return result

The re module of Python is used, and the re module contains all the applications of regular expressions. There are several points in the code:

\ W

Test it:

Replace_all_blank ("Powe, on;the 2333,. Haha!! can we have a look? one line of code is fine! ^ _ ^")

Output result:

Poweonthe2333, , can we have a look? one line of code is fine.

One line of code is done! Perfect!

At this point, the study on "how to use Python to filter special characters such as punctuation marks in text" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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