Do you know what it means to flatten an array? Flattening is the process of transforming a multidimensional array into a one-dimensional one.

This transformation can be achieved using two different methods:

• the first one we're already familiar with is the .reshape(-1) method with an argument of -1;
• the other option is to use the .flatten() method.

Now, let's have a look at both of these methods in practice.

Let's see how to use the .reshape(-1) method:

Let's see how to use the .flatten() method:

Let's practice!