Python. Start requests + bs4 (WebScrapping) [5]


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Before you begin, install the necessary libraries,for this, type at the command prompt:

pip install requests
pip install bs4

requests – needed to get the html page.

bs4 – needed to parse this very page.

Now, we need to know our user-agent. That when entering, the site thought that you came from the browser.

We get a User-Agent.

  • To do this, go to Mozilla Firefox,to any site.
  • Open the developer menu (F12).
  • Reload the page.
  • Go to the networkgraph, and look for the first GET request.

In the request headerscolumn, find the User-Agent.

And save this value in a text file.

Get the content of the page

Create a Python script and put the following code there:

# Import libraries
import requests
from bs4 import BeautifulSoup

#Создаем dictionary of headings
header = {
    #Сюда put our user-agent
    'user_agent': 'your_user_agent_py_here'

resp = requests.get('', headers=header).text

In the headerdictionary, replace user-agent with your own.

In this line:

resp = requests.get('', headers=header).text

We sent a GET request to the site,in which we passed our own header dictionary asheaders.

And received a response from the server, in the form of text (.text)

As a result, we received the content of the html page located at

It remains to carp this text.

Parsim html code with BeautifulSoup.

Replace the last 2 lines with this:

resp = requests.get('', headers=header).text
soup = BeautifulSoup(resp, 'lxml')
desc = soup.find('div',class_='d-none d-sm-block').findAll('h4',class_='description')
for d in desc:
  if d.text.find('buying') > 0:
    price = float(d.find('b').text.split(' ')[0])

In this line:

soup = BeautifulSoup(resp, 'lxml')

The BeautifulSoup object takes 2 arguments:

  • Textthat we will parse.
  • The parseritself.

Lxmlwas chosen as the parser because it is the fastest html parser available. Read more in the documentation.

desc = soup.find('div',class_='d-none d-sm-block').findAll('h4',class_='description')

To access an item, use the findmethod, which has the following syntax

Values in square brackets [] are optional.

soup.find('tag', [class_='class', id='id_tag'])
  • tag – tag of the element we need (div, span, a, input)
  • class – class of the desired element
  • id id of the element.

That is, here:

desc = soup.find('div',class_='d-none d-sm-block').findAll('h4',class_='description')

We are looking for an element with a div tag, and a class 'd-none d-sm-block'

Inside this element, we look for all the elements (. findAll) with h4 tag and description class. As a result, we got an array of elements.

for d in desc:

We go through each element.

if d.text.find('buying') > 0:

If the text inside the h4 tag (d.text) contains the string 'buying', then:

price = float(d.find('b').text.split(' ')[0])

We get the text inside the tag 'b' (key price), we leave a part to the space (.split(' ')[0]).

In conclusion, we display the price on the screen.

Final result.

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