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Python Automation Cookbook
Python Automation Cookbook

Python Automation Cookbook: Explore the world of automation using Python recipes that will enhance your skills

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Python Automation Cookbook

Automating Tasks Made Easy

In this chapter, we'll cover the following recipes:

  • Preparing a task
  • Setting up a cron job
  • Capturing errors and problems
  • Sending email notifications

Introduction

To properly automate tasks, we need a platform so that they run automatically at the proper times. A task that needs to be run manually is not really fully automated.

But, in order to be able to leave them running in the background while worrying about more pressing issues, the task will need to be adequate to run in fire-and-forget mode. We should be able to monitor that it runs correctly, be sure that we are capturing future actions (such as receiving notifications if something interesting arises), and know whether there have been any errors while running it.

Ensuring that a piece of software runs consistently with a high reliability is actually a very big deal and is one area that, to be done properly, requires specialized knowledge and staff, which typically go by the names of sysadmin, operations, or SRE (Site Reliability Engineering). Sites like Amazon and Google...

Preparing a task

It all starts with defining exactly what task needs to be run, and designing it in a way that doesn't require human intervention to run.

Some ideal characteristic points are as follows:

  1. Single, clear entry point: No confusion on what the task to run is.
  2. Clear parameters: If there are any parameters, they should be very explicit.
  3. No interactivity: Stopping the execution to request information from the user is not possible.
  4. The result should be stored: To be able to be checked at a different time than when it runs.
  5. Clear result: If we are working interactively in a result, we accept more verbose results, or progress reports. But, for an automated task, the final result should be as concise and to the point as possible.
  6. Errors should be logged: To analyze what went wrong.

A command-line program has a lot of those characteristics already. It has a clear way...

Setting up a cron job

Cron is an old-fashioned but reliable way of executing commands. It has been around since the 70s in Unix, and it's an old favorite in system administration to perform maintenance, such as freeing space, rotating logs, making backups, and other common operations.

This recipe is Unix-specific, so it will work in Linux and MacOS. While it's possible to schedule a task in Windows, it's very different and uses Task Scheduler, which won't be described here. If you have access to a Linux server, it can be a good way of scheduling periodic tasks.
The main advantages are as follows:
  • It's present in virtually all Unix or Linux systems and configured to run automatically.
  • It's easy to use, though a little deceptive.
  • It's well-known. Almost anyone involved with admin tasks will have a general idea on how to use it.
  • It allows for easy...

Capturing errors and problems

An automated task's main characteristic is its fire-and-forget quality. We are not actively looking at the result, but making it run in the background.

Also, as most of the recipes in this book deal with external information, such as web pages or other reports, the likelihood of finding an unexpected problem when running it is high. This recipe will present an automated task that will safely store unexpected behaviors in a log file that can be checked afterwards.

Getting ready

As a starting point, we'll use a task that will divide two numbers, as described in the command line.

This task is very similar to the one presented in Step 5 in the How to do it… section, but instead of...

Sending email notifications

Email has become an inescapable tool that everyone uses everyday. It's probably the best place to send a notification if an automated task has detected something. On the other hand, email inboxes are already too filled up with spam messages, so be careful.

Spam filters are also a reality. Be careful with who to send emails to and the number of emails to be sent. An email server or address can be labelled as spam, and all emails will be quietly dropped by the internet.
This recipe will show how to send a single email, using an already existing email account.

This approach is viable for spare emails sent to a couple of people, as a result from an automated task, but no more than that.

Getting ready

...
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Key benefits

  • Automate integral business processes such as report generation, email marketing, and lead generation
  • Build your first web application that scrapes data and accesses websites' APIs
  • Create graphic-rich charts, graphs, and maps using Matplotlib

Description

Have you been doing the same old monotonous office work over and over again? Or have you been trying to find an easy way to make your life better by automating some of your repetitive tasks? Through a tried and tested approach, understand how to automate all the boring stuff using Python. The Python Automation Cookbook helps you develop a clear understanding of how to automate your business processes using Python, including detecting opportunities by scraping the web, analyzing information to generate automatic spreadsheets reports with graphs, and communicating with automatically generated emails. You’ll learn how to get notifications via text messages and run tasks while your mind is focused on other important activities, followed by understanding how to scan documents such as résumés. Once you’ve gotten familiar with the fundamentals, you’ll be introduced to the world of graphs, along with studying how to produce organized charts using Matplotlib. In addition to this, you’ll gain in-depth knowledge of how to generate rich graphics showing relevant information. By the end of this book, you’ll have refined your skills by attaining a sound understanding of how to identify and correct problems to produce superior and reliable systems.

Who is this book for?

The Python Automation Cookbook is for you if you are a developer or anyone who wants to automate monotonous manual tasks related to fields such as finance, sales, and HR, among others.

What you will learn

  • Get to grips with scraping a website to detect changes
  • Search and process raw sales files to aggregate information in spreadsheets
  • Explore techniques to extract information from an Excel spreadsheet and generate exciting reports with graphs
  • Discover the techniques required to generate random, print-friendly codes to be used as single-use coupons
  • Automatically generate a marketing campaign, contacting the recipients over different channels
  • Identify and implement precise solutions

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Publication date : Sep 27, 2018
Length: 398 pages
Edition : 1st
Language : English
ISBN-13 : 9781789133806
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Publication date : Sep 27, 2018
Length: 398 pages
Edition : 1st
Language : English
ISBN-13 : 9781789133806
Languages :
Concepts :
Tools :

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Table of Contents

11 Chapters
Let Us Begin Our Automation Journey Chevron down icon Chevron up icon
Automating Tasks Made Easy Chevron down icon Chevron up icon
Building Your First Web Scraping Application Chevron down icon Chevron up icon
Searching and Reading Local Files Chevron down icon Chevron up icon
Generating Fantastic Reports Chevron down icon Chevron up icon
Fun with Spreadsheets Chevron down icon Chevron up icon
Developing Stunning Graphs Chevron down icon Chevron up icon
Dealing with Communication Channels Chevron down icon Chevron up icon
Why Not Automate Your Marketing Campaign? Chevron down icon Chevron up icon
Debugging Techniques Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

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Stephan Miller Jun 19, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book has a lot of information. First it shows you how to set up a Python environment for automation, including installing Python, setting up cron jobs to run your tasks on schedule, and adding notifications so you can get details on your jobs delivered to your email.And then it gets interesting. This book differs slightly from other cookbooks I have read that just list a bunch of small coding examples to do specific things. These recipes build on each other and can be mixed and matched to automate a process you are doing manually.The topics covered are web scraping, file processing, report generation, spreadsheet manipulation, data processing and cleaning, graph and chart generation, communication, marketing automation, machine learning, code testing and debugging. You will definitely find enough examples here to automate any process you may have and free up time.
Amazon Verified review Amazon
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