Book Image

Modern Python Standard Library Cookbook

By : Alessandro Molina
Book Image

Modern Python Standard Library Cookbook

By: Alessandro Molina

Overview of this book

The Python 3 Standard Library is a vast array of modules that you can use for developing various kinds of applications. It contains an exhaustive list of libraries, and this book will help you choose the best one to address specific programming problems in Python. The Modern Python Standard Library Cookbook begins with recipes on containers and data structures and guides you in performing effective text management in Python. You will find Python recipes for command-line operations, networking, filesystems and directories, and concurrent execution. You will learn about Python security essentials in Python and get to grips with various development tools for debugging, benchmarking, inspection, error reporting, and tracing. The book includes recipes to help you create graphical user interfaces for your application. You will learn to work with multimedia components and perform mathematical operations on date and time. The recipes will also show you how to deploy different searching and sorting algorithms on your data. By the end of the book, you will have acquired the skills needed to write clean code in Python and develop applications that meet your needs.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Combining dates and times


Sometimes you will have separated dates and times. This is particularly frequent when they are entered by a user. From an interaction point of view, it's usually easier to pick a date and then pick a time than to pick a date and a time together. Or you might be combining inputs from two different sources.

In all those cases, you will end up with a date and a time that you want to combine in a single datetime.datetime instance.

How to do it...

The Python standard library provides support for such operations out of the box, so having any two of those:

>>> t = datetime.time(13, 30)
>>> d = datetime.date(2018, 1, 11)

We can easily combine them into a single entity:

>>> datetime.datetime.combine(d, t)
datetime.datetime(2018, 1, 11, 13, 30)

There's more...

If your time instance has a time zone (tzinfo), combining the date with the time will also preserve it:

>>> t = datetime.time(13, 30, tzinfo=datetime.timezone.utc)
>>> datetime.datetime...