How to use the Python Bleach library to clean and filter the text (Methods and Examples for Text Cleaning and Filtering USIN BLEACHN BLEACHN BLEACH Library)

The method and example of using the Python Bleach library for text cleaning and filtering The Python Bleach library is a powerful tool for text cleaning and filtering, which is used to delete or transfer unsafe content from user input and other non -trusted sources.This article will introduce the method of using the BLEACH library for text cleaning and filtering, and provide relevant code examples. First, you need to ensure that the BLEACH library is installed in the Python environment.You can use the following command for installation: pip install bleach After the installation is completed, we can use the following methods of the BLEACH library to clean and filter: 1. `Clean () method: This method is used to clean the content of HTML, deletes the tzu and attributes, and translates to special characters.The following is the example code of this method: python import bleach html_content = """ <h1>Welcome</h1> <script>alert('Hello!');</script> <p>This is a <b>test</b>.</p> """ cleaned_content = bleach.clean(html_content) print(cleaned_content) In the above code, the `clean ()` method will clean the html content in the variable of `html_content`, and delete the` Script> `tags and its content.The output will be a string containing only text, similar to the following content: Welcome This is a test. 2. `linkify ()` method: This method converts the URL and email address in the text into a click -on link.The following is the example code of this method: python import bleach text = """ Visit my website: http://example.com Contact me at: info@example.com """ linked_text = bleach.linkify(text) print(linked_text) In the above code, the method of `linkify ()` will convert the URL and Email address in the `Text` variable into a clicked link.The output will be a text string with links, similar to the following content: Visit my website: <a href="http://example.com" rel="nofollow">http://example.com</a> Contact me at: <a href="mailto:info@example.com" rel="nofollow">info@example.com</a> In addition to these examples, the BLEACH library also provides many other methods, which can be cleaned and filtered in more fine -grained text.The complete document can be found on the official BLEACH library page. It should be noted that the BLEACH library only allows some secure HTML tags and attributes to be allowed. If you need to customize the allowable label and attribute list, you can pass the `tags` and` Attributes` parameters when calling the `clean ()" method.EssenceDetailed instructions can be found in the BLEACH document. This is the method and example of using the Python Bleach library for text cleaning and filtering.Through BLEACH, you can easily clean and filter the HTML content entered by the user, thereby improving the security and stability of the application.