Technical requirements

You can download the datasets and code from the GitHub repository:

• Data: https://github.com/PacktPublishing/Polars-Cookbook/tree/main/data
• Code: https://github.com/PacktPublishing/Polars-Cookbook/tree/main/Chapter06

It is assumed that you have installed the Polars library in your Python environment:

>>> pip install polars

It is also assumed that you have imported it into your code:

import polars as pl

We’ll be using the Google Play Store Reviews dataset throughout this chapter, which can be found here: https://github.com/PacktPublishing/Polars-Cookbook/blob/main/data/google_store_reviews.csv.

Read the dataset into a DataFrame:

df = pl.read_csv('../data/google_store_reviews.csv')

Let’s change the length of a string that Polars will show in a DataFrame. For Jupyter notebooks, you need to change the environmental variable directly:

import os
os.environ['POLARS_FMT_STR_LEN'] = str...