Mastering pandas - Second Edition

lambda and apply

In order to see how the lambda keyword can be used, we need to create some data. We'll create data containing date columns. Handling date columns is a topic in itself, but we'll get a brief glimpse of this process here.

In the following code, we are creating two date columns:

• Start Date: A sequence of 300 consecutive days starting from 2016-01-15
• End Date: A sequence of 300 days taken randomly from any day between 2010 and 2025

Some date/time methods have been used to create these dates in the following code block. Please take note of them and ensure that you understand them:

### Importing required librariesimport datetimeimport pandas as pdfrom random import randint### Creating date sequence of 300 (periods=300) consecutive ...