NumPy Basics - Creating NumPy Arrays and Array Attributes

1. Creating Arrays

There are two ways to create arrays in NumPy:

a. Arrays From Lists

The first step when working with packages is to define the right “imports”. We can import NumPy like so:

import numpy as np

Notice that np is the standard shorthand for NumPy.

There are multiple ways to create arrays. Let’s start by creating an array from a list using the np.array function.

We can create a one-dimensional (1D) array from a list by passing the list as input parameters to the np.array function:

np.array([1, 2, 3, 4])