In this hands-on tutorial we will reinvent the wheel!

We'll reinvent the wheel and implement the module itertools in plain Python.

We'll do that because it's fun, but also because that will teach us a lot about Python:

• the difference between iterables and iterators;
• what the built-ins iter and next do;
• how Python handles iterations and for loops under the hood;
• what the iterator protocol is;
• how the dunder methods __iter__ and __next__ play a part in all this; and
• we'll also learn about the functions inside itertools, a module with plenty of useful tools for your day-to-day iterations.

To prepare for the tutorial, please
- have Python 3.12+ installed (ideally);
- clone this GitHub repository https://github.com/mathspp/the-little-book-of-itertools; and
- install the requirements (it's just pytest).

In this hands-on tutorial we will reinvent the wheel!

We'll reinvent the wheel and implement the module itertools in plain Python.

We'll do that because it's fun, but also because that will teach us a lot about Python:

• the difference between iterables and iterators;
• what the built-ins iter and next do;
• how Python handles iterations and for loops under the hood;
• what the iterator protocol is;
• how the dunder methods __iter__ and __next__ play a part in all this; and
• we'll also learn about the functions inside itertools, a module with plenty of useful tools for your day-to-day iterations.

To prepare for the tutorial, please
- have Python 3.12+ installed (ideally);
- clone this GitHub repository https://github.com/mathspp/the-little-book-of-itertools; and
- install the requirements (it's just pytest).

How do you create an animation?

What if you want to morph a circle into a figure eight?

As it turns out, all you need is two or three functions and a loop!

In this live-coded talk, we'll go over the basic concepts and code needed to create an animation from first principles.

Because the talk presents the ideas and the code from first principles, you will be able to take the key concepts and build your own animations after!

We'll start simple and build from there:

• How can you draw a circle if all you can do is colour single pixels?
• How can you animate the process of drawing a circle?
• How can you animate the process of drawing something other than a circle?
• How can you animate the process of morphing two figures?
• How do you add colour to your animations?

This visually appealing talk will show you all of the code without skipping a single line and by the time we're done you'll be jumping in your seat to create your own animations!