Search icon CANCEL
Subscription
0
Cart icon
Cart
Close icon
You have no products in your basket yet
Save more on your purchases!
Savings automatically calculated. No voucher code required
Arrow left icon
All Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Newsletters
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Learning Python

You're reading from  Learning Python

Product type Book
Published in Dec 2015
Publisher Packt
ISBN-13 9781783551712
Pages 442 pages
Edition 1st Edition
Languages
Author (1):
Fabrizio Romano Fabrizio Romano
Profile icon Fabrizio Romano
Toc

Table of Contents (20) Chapters close

Learning Python
Credits
About the Author
Acknowledgements
About the Reviewers
www.PacktPub.com
Preface
1. Introduction and First Steps – Take a Deep Breath 2. Built-in Data Types 3. Iterating and Making Decisions 4. Functions, the Building Blocks of Code 5. Saving Time and Memory 6. Advanced Concepts – OOP, Decorators, and Iterators 7. Testing, Profiling, and Dealing with Exceptions 8. The Edges – GUIs and Scripts 9. Data Science 10. Web Development Done Right 11. Debugging and Troubleshooting 12. Summing Up – A Complete Example Index

First approach – scripting


Now, let's start writing the script. I'll go through the source in three steps: imports first, then the argument parsing logic, and finally the business logic.

The imports

scrape.py (Imports)

import argparse
import base64
import json
import os
from bs4 import BeautifulSoup
import requests

Going through them from the top, you can see that we'll need to parse the arguments. which we'll feed to the script itself (argparse). We will need the base64 library to save the images within a JSON file (base64 and json), and we'll need to open files for writing (os). Finally, we'll need BeautifulSoup for scraping the web page easily, and requests to fetch its content. requests is an extremely popular library for performing HTTP requests, built to avoid the difficulties and quirks of using the standard library urllib module. It's based on the fast urllib3 third-party library.

Note

We will explore the HTTP protocol and requests mechanism in Chapter 10, Web Development Done Right...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at ₹800/month. Cancel anytime}