iWeb Scraping
For starting a new project, using web scraping services is the best option that can provide data sets offered by various sites. You wish to scrape the specific number of posts from every company and then execute Machine Learning methods.
What Kind of Information Will You Scrape from the Website?
- Name
- Date
- Post
- Likes
Examine the Web Page
Go to examine by pressing F12 or right-clicking on the page.
A basic understanding of “HTML” is required. However, you can click on almost any data on the page that interests you, and you will be taken to the exact spot on the HTML lines coding.
Python Script
The magic will be performed by these two Python languages (BeautifulSoup and Selenium). By following the instructions, you can configure Selenium and the web driver.
The first step is to import the libraries into Python.
from selenium import webdriver from bs4 import BeautifulSoup from time import sleep import pandas as pd
We’ll start by creating an example, then run a browser in private mode and expand the window.
options=webdriver.ChromeOptions()
options.add_argument('--incognito')
driver=webdriver.Chrome(options=options)
driver.get('https://www.linkedin.com/uas/login')
driver.maximize_window()To log in, we’ll send our credentials (username and password).
username = driver.find_element_by_id('username')
username.send_keys('your_username')
password = driver.find_element_by_id('password')
password.send_keys('your_password')
log_in_button = driver.find_element_by_class_name('from__button--floating')
log_in_button.click()You will need to add the URLs of the firms that you want to scrape to the list.
urls = [ 'https://www.linkedin.com/company/alicorp-saa/posts/?feedView=all','https://www.linkedin.com/company/backus/posts/?feedView=all' ]
Let us create a dictionary for saving the data
data = {
"name": [],
"date": [],
"post": [],
"likes": [],
"count_posts":[]
}You’ll need to modify this and see how many scrolls you’ll have, and we’ll also have to include a variable delay to reload the site.
for i in range(max(0,40)):
driver.execute_script('window.scrollBy(0, 500)')
sleep(1)BeautifulSoup will parse HTML when the vehicle has completed the above step, allowing us to collect whatever we require. For instance, let’s say we require post content.
posts=soup.find_all('div',{'class':"occludable-update ember-view"})post = posts[2].find('div',{'class':"feed-shared-update-v2__description-wrapper ember-view"}).span.get_text()
if post:
print(post)Output:
Put Data into DataFrame
df = pd.DataFrame(data) df.head(10)
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import os
import selenium.webdriver
import csv
import time
import pandas as pd
from selenium import webdriver
from bs4 import BeautifulSoup
url_sets=["https://www.walmart.com/browse/tv-video/all-tvs/3944_1060825_447913",
"https://www.walmart.com/browse/computers/desktop-computers/3944_3951_132982",
"https://www.walmart.com/browse/electronics/all-laptop-computers/3944_3951_1089430_132960",
"https://www.walmart.com/browse/prepaid-phones/1105910_4527935_1072335",
"https://www.walmart.com/browse/electronics/portable-audio/3944_96469",
"https://www.walmart.com/browse/electronics/gps-navigation/3944_538883/",
"https://www.walmart.com/browse/electronics/sound-bars/3944_77622_8375901_1230415_1107398",
"https://www.walmart.com/browse/electronics/digital-slr-cameras/3944_133277_1096663",
"https://www.walmart.com/browse/electronics/ipad-tablets/3944_1078524"]
categories=["TVs","Desktops","Laptops","Prepaid_phones","Audio","GPS","soundbars","cameras","tablets"]
# scraper
for pg in range(len(url_sets)):
# number of pages per category
top_n= ["1","2","3","4","5","6","7","8","9","10"]
# extract page number within sub-category
url_category=url_sets[pg]
print("Category:",categories[pg])
final_results = []
for i_1 in range(len(top_n)):
print("Page number within category:",i_1)
url_cat=url_category+"?page="+top_n[i_1]
driver= webdriver.Chrome(executable_path='C:/Drivers/chromedriver.exe')
driver.get(url_cat)
body_cat = driver.find_element_by_tag_name("body").get_attribute("innerHTML")
driver.quit()
soupBody_cat = BeautifulSoup(body_cat)
for tmp in soupBody_cat.find_all('div', {'class':'search-result-gridview-item-wrapper'}):
final_results.append(tmp['data-id'])
# save final set of results as a list
codelist=list(set(final_results))
print("Total number of prods:",len(codelist))
# base URL for product page
url1= "https://walmart.com/ip"
# Data Headers
WLMTData = [["Product_code","Product_name","Product_description","Product_URL",
"Breadcrumb_parent","Breadcrumb_active","Product_price",
"Rating_Value","Rating_Count","Recommended_Prods"]]
for i in range(len(codelist)):
#creating a list without the place taken in the first loop
print(i)
item_wlmt=codelist[i]
url2=url1+"/"+item_wlmt
#print(url2)
try:
driver= webdriver.Chrome(executable_path='C:/Drivers/chromedriver.exe') # Chrome driver is being used.
print ("Requesting URL: " + url2)
driver.get(url2) # URL requested in browser.
print ("Webpage found ...")
time.sleep(3)
# Find the document body and get its inner HTML for processing in BeautifulSoup parser.
body = driver.find_element_by_tag_name("body").get_attribute("innerHTML")
print("Closing Chrome ...") # No more usage needed.
driver.quit() # Browser Closed.
print("Getting data from DOM ...")
soupBody = BeautifulSoup(body) # Parse the inner HTML using BeautifulSoup
h1ProductName = soupBody.find("h1", {"class": "prod-ProductTitle prod-productTitle-buyBox font-bold"})
divProductDesc = soupBody.find("div", {"class": "about-desc about-product-description xs-margin-top"})
liProductBreadcrumb_parent = soupBody.find("li", {"data-automation-id": "breadcrumb-item-0"})
liProductBreadcrumb_active = soupBody.find("li", {"class": "breadcrumb active"})
spanProductPrice = soupBody.find("span", {"class": "price-group"})
spanProductRating = soupBody.find("span", {"itemprop": "ratingValue"})
spanProductRating_count = soupBody.find("span", {"class": "stars-reviews-count-node"})
################# exceptions #########################
if divProductDesc is None:
divProductDesc="Not Available"
else:
divProductDesc=divProductDesc
if liProductBreadcrumb_parent is None:
liProductBreadcrumb_parent="Not Available"
else:
liProductBreadcrumb_parent=liProductBreadcrumb_parent
if liProductBreadcrumb_active is None:
liProductBreadcrumb_active="Not Available"
else:
liProductBreadcrumb_active=liProductBreadcrumb_active
if spanProductPrice is None:
spanProductPrice="NA"
else:
spanProductPrice=spanProductPrice
if spanProductRating is None or spanProductRating_count is None:
spanProductRating=0.0
spanProductRating_count="0 ratings"
else:
spanProductRating=spanProductRating.text
spanProductRating_count=spanProductRating_count.text
### Recommended Products
reco_prods=[]
for tmp in soupBody.find_all('a', {'class':'tile-link-overlay u-focusTile'}):
reco_prods.append(tmp['data-product-id'])
if len(reco_prods)==0:
reco_prods=["Not available"]
else:
reco_prods=reco_prods
WLMTData.append([codelist[i],h1ProductName.text,ivProductDesc.text,url2,
liProductBreadcrumb_parent.text,
liProductBreadcrumb_active.text, spanProductPrice.text, spanProductRating,
spanProductRating_count,reco_prods])
except Exception as e:
print (str(e))
# save final result as dataframe
df=pd.DataFrame(WLMTData)
df.columns = df.iloc[0]
df=df.drop(df.index[0])
# Export dataframe to SQL
import sqlalchemy
database_username = 'ENTER USERNAME'
database_password = 'ENTER USERNAME PASSWORD'
database_ip = 'ENTER DATABASE IP'
database_name = 'ENTER DATABASE NAME'
database_connection = sqlalchemy.create_engine('mysql+mysqlconnector://{0}:{1}@{2}/{3}'.
format(database_username, database_password, database_ip, base_name))
df.to_sql(con=database_connection, name='‘product_info’', if_exists='replace',flavor='mysql')You may always add additional complexity into this code for adding customization to the scraper. For example, the given scraper will take care of the missing data within attributes including pricing, description, or reviews. The data might be missing because of many reasons like if a product get out of stock or sold out, improper data entry, or is new to get any ratings or data currently.
For adapting different web structures, you would need to keep changing your web scraper for that to become functional while a webpage gets updated. The web scraper gives you with a base template for the Python’s scraper on Walmart.
Want to extract data for your business? Contact iWeb Scraping, your data scraping professional!
