Get your Guide to the Python 3 Interpreter (Book Launch)

CPython Internals (our new book) is available at a 60% "Early Access" discount until Thursday night
Click here to learn more and claim your discount

Hey there,

Are there certain parts of Python that just seem like magic?

Like, how dictionaries are so much faster than looping over a list to find an item…

How does a generator remember the state of the variables each time it yields a value—and why do you never have to allocate memory like in other languages?

It turns out, CPython, the most popular Python runtime is written in human-readable C and Python code…

The CPython interpreter abstracts away the complexities of the underlying C platform and your operating system.

It makes threading cross-platform and straightforward.

It takes the pain of memory management in C and makes it simple.

In short, CPython gives you the platform to write scalable and performant applications using the comfortable and powerful syntax of Python…

However, these abstractions aren’t perfect, and they’re often leaky:

That’s why at some stage in your progression as a Python developer, you can benefit greatly from understanding how CPython works internally.

By “peeking behind the scenes” of the Python runtime, you’ll deepen your skills and become a true Pythonista…

You’ll get one step closer to truly mastering Python, enabling you to write beautiful & idiomatic code that’s also fast and efficient.

Once you see how Python works at the interpreter level, you can optimize your applications and fully leverage the power of Python.

The thing is, few developers take the time to understand their tools at such a deep level—it’s a surefire way to impress colleagues and interviewers alike.

That's why we're launching the "CPython Internals" book today.

This book explains the concepts, ideas, and technicalities of CPython in an approachable and hands-on fashion.

By the end of the book you'll be able to:

* Read and navigate the CPython 3.9 interpreter source code. You’ll deeply comprehend and appreciate the inner workings of concepts like lists, dictionaries, and generators.

* Make changes to the Python syntax and compile your own version of CPython, from scratch. You’ll customize the Python core data types with new functionality and run CPython’s automated test suite.

* Master CPython’s memory management capabilities and scale your Python code with parallelism and concurrency.

* Debug C and Python code like a true professional. Profile and benchmark the performance of your Python code and the runtime.

* Participate in the development of CPython and know how to contribute to future versions of the Python interpreter and standard library. How great would it feel to give back to the community as a “Python Core Developer?”

The subtitle of the book is "Your Guide to the Python 3 Interpreter" (for good reason!)

You see, with this book you’ll cover the critical concepts behind the internals of CPython and how they work with visual explanations as you go along.

Once you’ve completed the book, you’ll be able to use your newfound knowledge to:

Write custom extensions for Python, written in the C programming language (the book includes an “Intro to C for Pythonistas” chapter).

Use your deep knowledge of the CPython interpreter to improve your own Python applications.

Contribute to the CPython project and start your journey towards becoming a Python Core Developer.

Moreover, you’ll feel a sense of achievement that you fully grasp the core concepts of Python that make you a better and more effective Python programmer.

Because you're a newsletter subscriber, I'm offering you a big “Early Access” discount for the book:

You can still claim your 60% OFF discount today. 

See the link below to learn more:

>> Click here to master Python 3 at a deeper level (and get a 60% discount)

— Dan Bader