📅 最后修改于: 2023-12-03 15:35:02.316000 🧑 作者: Mango
Span Blast HTML is a Python library that allows you to extract information from HTML documents using span tags. This library is great for programmers who need to scrape data from web pages that do not have well-formed HTML.
You can install span-blast-html using pip:
pip install span-blast-html
Here is an example of how to use span-blast-html to extract information from an HTML document:
from span_blast_html import SpanBlastHTML
# Define the HTML string
html = "<html><body><span class='name'>John Doe</span><span class='age'>30</span></body></html>"
# Create a SpanBlastHTML object
sbh = SpanBlastHTML(html)
# Extract the name and age
name = sbh.extract('span.name')
age = sbh.extract('span.age')
# Print the results
print("Name:", name)
print("Age:", age)
In this example, we define an HTML string that contains two span tags with the class names 'name' and 'age'. We then create a SpanBlastHTML object and use the extract method to extract the data from the span tags.
The output of this example would be:
Name: John Doe
Age: 30
Span Blast HTML supports a subset of the CSS selector syntax. Here are some examples:
| Selector | Description |
| --- | --- |
| span | Selects all span tags |
| span.name | Selects all span tags with the class name 'name' |
| span#age | Selects the span tag with the ID 'age' |
| div > span | Selects all span tags that are direct children of a div tag |
| span:first-child | Selects the first span tag |
| span:last-child | Selects the last span tag |
| span:nth-child(2) | Selects the second span tag |
| span:nth-child(odd) | Selects all odd numbered span tags |
| span:nth-child(even) | Selects all even numbered span tags |
Span Blast HTML is a powerful tool for programmers who need to extract information from HTML documents. With support for a subset of the CSS selector syntax, it is easy to target specific elements in the HTML document.