Python BLEACH Library Performance Guide: How to install and get started (Python Bleach Library Complete Guide: How To Install and get Started)
Python Bleach Library Complete Guide: How to install and get started
Python Bleach is a library for cleaning and removing the trust labels and attributes in HTML content.This guide will introduce you to how to install the BLEACH library and start using it.
Install the bleach library
To install the BLEACH library, you can use Python's package management tool PIP.Open the terminal or command prompt and run the following command:
pip install bleach
This will automatically download and install the BLEACH library and its dependencies.
Use the BLEACH library to get started
After the installation is completed, you can start using the BLEACH library to clean and remove the non -trusted label and attributes in the HTML content.
First, import the BLEACH library:
python
import bleach
Next, we will use BLEACH library to clean a HTML string.Suppose we have a HTML strings that contain non -trusted labels and attributes, we want to remove it.You can use the `Clean` method to complete this operation:
python
html_string = "<p>Hello, <b>World</b>!</p><script>alert('Danger!');</script>"
cleaned_string = bleach.clean(html_string)
print(cleaned_string)
The output result will be the HTML string that is cleaned up. The unbelievable label and attributes have been deleted:
<p>Hello, <b>World</b>!</p>
In the above example, the `Clean` method clears the` Script> `label and its content, because it is considered unbelievable.
In view of security, Bleach also provides a way to allow certain labels and attributes.By using the parameters of `Allow_tags` and` Allow_attributes`, we can specify the label and attributes to be retained:
python
html_string = "<p>Hello, <b>World</b>!</p><script>alert('Danger!');</script>"
cleaned_string = bleach.clean(html_string, tags=['b'], attributes={'b': ['style']})
print(cleaned_string)
The output result will only retain the HTML string of `<b>` `` `` style` attributes:
<p>Hello, <b style="">World</b>!</p>
In the above example, we specify the label to be allowed to be `<b>` and allow it to allow its `style` attribute.
In addition to the `Clean` method, BLEACH also provides some other methods and functions, such as the` linkify` method to automatically create links, and the `Sanitize` method is used to remove unusual labels.
This is the basic step of using the Python Bleach library.You can further learn and use other functions according to specific needs and applications.
Code and configuration description
The following is an example of the complete code used in this guide:
python
import bleach
# Clean HTML string
def clean_html(html_string):
cleaned_string = bleach.clean(html_string)
return cleaned_string
# Allow specified tags and attributes
def clean_html_with_allowed_tags(html_string, tags, attributes):
cleaned_string = bleach.clean(html_string, tags=tags, attributes=attributes)
return cleaned_string
# Linkify URLs
def linkify_text(text):
linked_text = bleach.linkify(text)
return linked_text
In the above code example, we define three functions.`Clean_html` function uses the` Clean` method to clean the HTML string.`Clean_html_with_allowed_tags` Function uses the` Clean` method and pass the `tags` and` Attributes` parameters to allow specific tags and properties.`linkify_text` function uses the` linkify` method to create a link.You can customize these functions or add other functions as needed.
You can use the BLEACH library without any special configuration.You only need to install it and import it into the Python project to start using it.
I hope this guide can help you get started and use the Python Bleach library.I wish you a pleasant code!