Creating 2D and 3D multidimensional arrays with NumPy (Python 3)

Creating 2D and 3D multidimensional arrays with NumPy

We can create ndarrays using the np.array function. We need to use nested lists to introduce the extra dimensions. As you can see when running this example, the output (when using print) can become a bit hard to read. This gets worse when even more dimensions are involved.

Array creation using lists is doable up to 2D arrays; beyond that, list nesting quickly becomes cumbersome and unreadable. In the upcoming sections, we will see how we can address high-dimensional array creation using more straightforward ways.

Edit and run this Python 3 example code

This code is editable and runnable. You can run "Creating 2D and 3D multidimensional arrays with NumPy" by pressing the run button. It will be executed in our backend and the result (stdout and stderr) is displayed in addition tabs.

numpy array 2D 3D

Related crumbs you might like

NumPy 1D array creation with the copy option

NumPy 1D array creation with the copy option

Nov 8, 2022 by erik

When creating NumPy arrays, the copy argument controls whether a copy of the input object is made or not. When copy is True, any changes in the resulting array will not change the input object. However, if it is False,...

numpy array
NumPy float types: a demonstration of precision

NumPy float types: a demonstration of precision

Oct 11, 2022 by erik

The different NumPy float types allow us to store floats in different precision, dependent on the number of bits we allow the float to use. The larger the number of allowed bits, the more precision our array’s elements will have....

numpy float

Share "Creating 2D and 3D multidimensional arrays with NumPy"

Share this crumb (Creating 2D and 3D multidimensional arrays with NumPy) with your friends and colleagues to help them learn more about Python 3 programming.

Twitter, Facebook, LinkedIn

On Twitter, Facebook, and LinkedIn, simply paste the URL in your post and watch the magic unfold.

IFRAME

If you want to embed the crumb in an iframe, use the following code:

oEmbed (WordPress)

We support oEmbed, but most sites use allowlisting. On WordPress, oEmbed is supported out of the box, but see the note below.

If you plan to use crumb.sh heavily on Wordpress, you can use the following PHP code to allowlist our site and unlock all the functionalities of our crumbs:
wp_oembed_add_provider( 'https://crumb.sh/*', 'https://crumb.sh/oembed/' );

Embed.ly

Embed.ly is a service that allows you to embed content from other sites. We will request to be added to the list of trusted sites once we're out of beta.