1. Web Scraping Real Python Programming
2. Real Python Web Scraping
3. How To Make A Web Scraper
4. Web Scraping Real Python Interview
5. Web Scraping Real Python Code

Among all these languages, Python is considered as one of the best for Web Scraping because of features like – a rich library, easy to use, dynamically typed, etc. Here are some most commonly used python3 web Scraping libraries.

In this tutorial, we will be performing web scraping with Python and beautifulsoup. We will be scraping images of all the megacities of our world as of 2016 from this link: https://en.wikipedia.org/wiki/Megacity

If you scroll down the page, you should come across a table looking like this:

We will be scraping the images from the Image column shown in the above picture. To do this, we use the requests library first like shown in the following block of code:

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2. Web scraping with Python is easy due to the many useful libraries available A barebones installation isn’t enough for web scraping. One of the Python advantages is a large selection of libraries for web scraping. For this Python web scraping tutorial, we’ll be using three important libraries – BeautifulSoup v4, Pandas, and Selenium.
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Next, we will get the entire content of the page in HTML format using a library called beautifulsoup4. To do so, write:

You can notice that the entire source code of the wiki page has been stored inside this soup variable. From this point, knowledge of HTML can help in grasping the concept of extracting the target data easily. However, I will try to make it as clear as possible for people without HTML knowledge as well.

Head to the webpage from your browser and locate where your information is in the webpage by checking out the Page Source or Source Code of the webpage. On carefully going through the code, you can notice that our information is located somewhere and looks like the image below.

From this, we can conclude that our information is residing inside the <table> tags. However, there can be multiple tables in the source code and we want to extract the table that is relevant to us. To do this, you can go back to the source code and look for <table. You will see the number of tables that are there on the webpage. Find out which table from the top is yours. At the time of writing this article, it is the second table which we need.

To find all the tables and get the content of the second table, we will do:

Our megaTable variable now has the source code of the table from which we need to extract the rank, city and country. To extract further information, let us inspect which part of this table we need to access. The code below is for the first two cities. We will however do it for all the cities.

Web Scraping Real Python Programming

To scrape the images, have a look at the megaTable variable from the page. You can find that links of the images are inside <a> with the name of the class being image. It looks like this:

Real Python Web Scraping

From each of these <a> with class name image, we will extract the value of href attribute.

Inside the above loop, we will try to create a new fake user agent every time, perform a request for the content to the link of the image, and try to get the link of the real raw image.

How To Make A Web Scraper

If you have followed the previous tutorial on how to find the relevant information from source code, by now you must know what to look for and how to get it. However, if you are still lost, what we are trying to do is access the above link to get the raw image link. The raw image link is residing inside a <div> tag with the class name fullImageLink inside the value from the variable partialLink which iterates through the links of all the megacities.

The content inside the fullImgDiv looks like:

The raw image link is inside the first <a> tag within the href attribute. We will extract this value next.

We will add the https: value to this link and add the links to the imgLinkList that we created earlier.

As said earlier, the above blocks of codes must be inside the initial loop. Hence, your final block of code must look like:

Web Scraping Real Python Interview

We now have a list of the links of raw images of all the megacities. We will now scrape them using the urllib library. We will also rename the image with the name of the city.

Web Scraping Real Python Code

You must now have the images of all the megacities stored inside the same folder as your scraping script. Congratulations on scraping images using Python and beautifulsoup. To learn web scraping texts with Python, head over to this article: Web Scraping With Python - Text Scraping Wikipedia