larger cover

Add To My Wish List

Register your product to gain access to bonus material or receive a coupon.

Cisco pyATS Network Test and Automation Solution: Data-driven and reusable testing for modern networks

Best Value Purchase

Book + eBook Bundle

  • Your Price: $68.29
  • List Price: $117.98
  • Includes EPUB and PDF
  • About eBook Formats
  • This eBook includes the following formats, accessible from your Account page after purchase:

    ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

    Adobe Reader PDF The popular standard, used most often with the free Acrobat® Reader® software.

    This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

Individual Purchases


  • Your Price: $47.99
  • List Price: $59.99
  • Usually ships in 24 hours.

eBook (Watermarked)

  • Your Price: $46.39
  • List Price: $57.99
  • Estimated Release: Jul 23, 2024
  • Includes EPUB and PDF
  • About eBook Formats
  • This eBook includes the following formats, accessible from your Account page after purchase:

    ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

    Adobe Reader PDF The popular standard, used most often with the free Acrobat® Reader® software.

    This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

  • Description
  • Sample Content
  • Updates
  • Copyright 2025
  • Dimensions: 7-3/8" x 9-1/8"
  • Pages: 720
  • Edition: 1st
  • Book
  • ISBN-10: 0-13-803167-3
  • ISBN-13: 978-0-13-803167-1

Unlock the power of automated network testing with the Cisco pyATS framework.

Written by industry experts John Capobianco and Dan Wade, Cisco pyATSNetwork Test and Automation Solution is a comprehensive guide to the Cisco pyATS framework, a Python-based environment for network testing, device configuration, parsing, APIs, and parallel programming.

Capobianco and Wade offer in-depth insights into the extensive capabilities of pyATS and the pyATS library (Genie). You'll learn how to leverage pyATS for network testing, including software version testing, interface testing, neighbor testing, and reachability testing. You'll discover how to generate intent-based configurations, create mock devices, and integrate pyATS into larger workflows using CI/CD pipelines and artificial intelligence. You'll explore the pyATS Blitz feature, which introduces a low-code no-code approach to network testing by allowing you to configure devices and write test cases using YAML, much like Ansible. And you'll learn how to reset devices during or after testing with the pyATS Clean feature, build a pyATS image from scratch for containerized application deployment, and much more.

Whether you're a network professional, software developer, or preparing for the Cisco DevNet Expert Lab exam, this book is a must-have resource.

Understand the foundations of NetDevOps and the modern network engineer's toolkit

  • Install, upgrade, and work with the pyATS framework and library
  • Define test cases, control the flow of test execution, and review test results with built-in reporting features
  • Generate automated network documentation with Jinja2 templates and Genie Conf objects
  • Apply CI/CD practices in network automation with GitLab, Ansible, and pyATS
  • Leverage artificial intelligence in pyATS for enhanced network automation

Table of Contents

    Introduction xxx

Chapter 1 Foundations of NetDevOps 1

    Traditional Network Operations 2

    Software Development Methodologies 11

    NetDevOps 14

    Comparing Network Automation Tools 21

    The Modern Network Engineer Toolkit 22

    CI/CD 32

    Summary 35

    References 36

Chapter 2 Installing and Upgrading pyATS 37

    Installing pyATS 37

    Upgrading pyATS 42

    Troubleshooting pyATS 45

    Summary 47

Chapter 3 Testbeds 49

    What Is YAML? 49

    What Is a Testbed? 51

    Device Connection Abstractions 60

    Testbed Validation 63

    Dynamic Testbeds 66

    Intent-based Networking with Extended Testbeds 68

    Summary 70

Chapter 4 AEtest Test Infrastructure 73

    Getting Started with AEtest 74

    Testscript Structure 75

    AEtest Object Model 82

    Runtime Behavior 85

    Test Results 88

    Processors 91

    Data-Driven Testing 94

    Running Testscripts 108

    Testscript Flow Control 117

    Reporting 126

    Debugging 133

    Summary 134

Chapter 5 pyATS Parsers 137

    Vendor-Agnostic Automation 138

    pyATS learn 139

    pyATS Parsers 146

    Parsing at the CLI 148

    Parsing with Python 159

    Dictionary Query 160

    Differentials 162

    Summary 167

Chapter 6 Test-Driven Development 169

    Introduction to Test-Driven Development 170

    Applying Test-Driven Development to Network Automation 172

    Introduction to pyATS 174

    The pyATS Framework 175

    Summary 187

    Endnotes 188

Chapter 7 Automated Network Documentation 189

    Introduction to pyATS Jobs 190

    Running pyATS Jobs from the CLI 196

    pyATS Job CLI Logs 199

    pyATS Logs HTML Viewer 203

    Jinja2 Templating 205

    Business-Ready Documents 206

    Summary 232

    References 232

Chapter 8 Automated Network Testing 233

    An Approach to Network Testing 234

    Software Version Testing 235

    Interface Testing 243

    Neighbor Testing 259

    Reachability Testing 262

    Intent Validation Testing 267

    Feature Testing 271

    Summary 276

Chapter 9 pyATS Triggers and Verifications 279

    Genie Objects 279

    Genie Harness 282

    Verifications 286

    Triggers 290

    Trigger and Verification Example 296

    Summary 301

Chapter 10 Automated Configuration Management 303

    Intent-Based Network Configuration 303

    Generating Configurations with pyATS 304

    Configuring Devices with pyATS 309

    Summary 320

Chapter 11 Network Snapshots 321

    Network Profiling 321

    Comparing Network State 324

    Polling Expected State 332

    Robot Framework with Genie 333

    Summary 335

    References 335

Chapter 12 Recordings, Playbacks, and Mock Devices 337

    Recording pyATS jobs 337

    Playback Recordings 341

    Mock Devices 342

    Mock Device CLI 344

    Summary 345

Chapter 13 Working with Application Programming Interfaces (API) 347

    pyATS APIs 347

    REST Connector 353

    YANG Connector 385

    gNMI 389

    Summary 395

Chapter 14 Parallel Call (pcall) 397

    Scaling Performance 397

    Parallel Call (pcall) 400

    Performance Comparison 406

    Summary 409

Chapter 15 pyATS Clean 411

    Getting Started 411

    Clean YAML 423

    Clean Execution 436

    Developing Clean Stages 443

    Summary 456

Chapter 16 pyATS Blitz 459

    Blitz YAML 459

    Blitz Usage 481

    Blitz Development 481

    Custom Blitz Actions 481

    Custom Blitz Sections 482

    Useful Tips 483

    Summary 484

Chapter 17 Chatbots with Webex 485

    Integrating pyATS with Webex 486

    pyATS Job Integration 487

    pyATS Health Check Integration 489

    Adaptive Cards 490

    Customized Job Notifications 492

    Summary 502

Chapter 18 Running pyATS as a Container 503

    Introduction to Containers 504

    pyATS Official Docker Container 506

    pyATS Image Builder 507

    Building a pyATS Image from Scratch 510

    Summary 513

Chapter 19 pyATS Health Check 515

    Health Checks 515

    Custom Health Checks 517

    Health Check Usage 523

    Summary 525

Chapter 20 XPRESSO 527

    Installing XPRESSO 529

    Getting Started with XPRESSO 536

    Transforming a pyATS Job into XPRESSO 538

    Summary 556

Chapter 21 CI/CD with pyATS 557

    What Is CI/CD? 557

    CI/CD In NetDevOps 560

    NetDevOps Scenario 562

    NetDevOps in Action 565

    Whats Next? 572

    Summary 573

Chapter 22 Robot Framework 575

    What Is the Robot Framework? 575

    Getting Started with Robot Framework 576

    Robot Integration with pyATS 582

    Summary 590

Chapter 23 Leveraging Artificial Intelligence in pyATS 591

    OpenAI API 597

    Retrieval Augmented Generation with LangChain 612

    Rapid Prototyping with Streamlit 621

    Summary 631

Appendix A Writing Your Own Parser 633

Appendix B Secret Strings 651

9780138031671, TOC, 6/5/2024

Cisco Press Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Cisco Press and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Cisco Press products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by Cisco Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive:

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020