First-class objects in Python
Minimum price
Suggested price

First-class objects in Python

Higher-order functions, wrappers, and factories

About the Book

This short book will tell you all you need to know to understand first-class citizenship in Python, which is the gateway to grasp how decorators work and how functional programming can supercharge your code.

The book contains three simple lessons, "First-class functions", "Nested functions", and "Factories", each one with some exercises and solutions. It also contains a section on "Functions and objects" and "Higher-order objects" where I discuss in detail how the concepts learned in the three lessons apply to classes and instances.

About the Author

Leonardo Giordani
Leonardo Giordani

My name is Leonardo Giordani, I was born in 1977 with Star Wars, bash, Apple ][, BSD, Dire Straits, The Silmarillion. I'm interested in operating systems and computer languages, photography, fantasy and science fiction, video and board games, guitar playing, and (too) many other things.

I studied and used several programming languages, from the Z80 and x86 Assembly to Python and Scala. I love mathematics and cryptography. I'm mainly interested in open source software, and I like both the theoretical and practical aspects of computer science.

For 13 years I was a C/Python programmer and DevOps for a satellite imagery company. and I am currently infrastructure engineer at WeGotPOP, a UK company based in London and New York that creates innovative software for film productions.

In 2013 I started publishing some technical thoughts on my blog, The Digital Cat. In 2018 I published my first book with Leanpub, “Clean Architectures in Python”, which has been already downloaded more than 25,000 times.

Leonardo Giordani

Episode 121

Table of Contents

  • Introduction
  • How to define functions in Python
  • First-class functions: functions as arguments
  • Nested functions: wrappers
  • Factories: functions as return values
  • Functions and objects
  • Higher-order objects
  • Factories for objects
  • Conclusion
  • Changelog

The Leanpub 60-day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms

80% Royalties. Earn $16 on a $20 book.

We pay 80% royalties. That's not a typo: you earn $16 on a $20 sale. If we sell 5000 non-refunded copies of your book or course for $20, you'll earn $80,000.

(Yes, some authors have already earned much more than that on Leanpub.)

In fact, authors have earnedover $12 millionwriting, publishing and selling on Leanpub.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub