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How can BeautifulSoup package be used to parse data from a webpage in Python?
BeautifulSoup is a third party Python library that is used to parse data from web pages. It helps in web scraping, which is a process of extracting, using, and manipulating the data from different resources.
Web scraping can also be used to extract data for research purposes, understand/compare market trends, perform SEO monitoring, and so on.
The below line can be run to install BeautifulSoup on Windows −
pip install beautifulsoup4
Let us see an example −
Example
import requests
from bs4 import BeautifulSoup
from urllib.request import urlopen
import urllib
url = 'https://en.wikipedia.org/wiki/Algorithm'
html = urlopen(url).read()
print("Reading the webpage...")
soup = BeautifulSoup(html, features="html.parser")
print("Parsing the webpage...")
for script in soup(["script", "style"]):
script.extract() # rip it out
print("Extracting text from the webpage...")
text = soup.get_text()
print("Data cleaning...")
lines = (line.strip() for line in text.splitlines())
chunks = (phrase.strip() for line in lines for phrase in line.split(" "))
text = '\n'.join(chunk for chunk in chunks if chunk)
text = str(text)
print(text)Output
Reading the webpage... Parsing the webpage... Extracting text from the webpage... Data cleaning... Recursive C implementation of Euclid's algorithm from the above flowchart Recursion A recursive algorithm is one that invokes (makes reference to) itself repeatedly until a certain condition (also known as termination condition) matches, which is a method common to functional programming…. ….. Developers Statistics Cookie statement
Explanation
The required packages are imported, and aliased.
The website is defined.
The url is opened, and the ‘script’ tag and other irrelevant HTML tags are removed.
The ‘get_text’ function is used to extract text from the webpage data.
The extra spaces and invalid words are eliminated.
The text is printed on the console.
Updated on: 18-Jan-2021
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