How to use arrays in Python To create an array in Python, we can use a type of variable called a “dictionary.” This is an associative array, meaning that it is made of value/key pairs.

Learn how to create, index, slice, reshape, and perform arithmetic operations on arrays using NumPy, the most popular Python library for data science.

Slicing with multi-dimensional arrays works in the same way. randarr [1:,:] # rows 1 onwards, all columns. ... Broadcasting. NumPy arrays differ from a normal Python list because of their ability to ...