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Mastering Python Networking

You're reading from   Mastering Python Networking Your one-stop solution to using Python for network automation, DevOps, and Test-Driven Development

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789135992
Length 466 pages
Edition 2nd Edition
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Author (1):
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Eric Chou Eric Chou
Author Profile Icon Eric Chou
Eric Chou
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Toc

Table of Contents (15) Chapters Close

Preface 1. Review of TCP/IP Protocol Suite and Python FREE CHAPTER 2. Low-Level Network Device Interactions 3. APIs and Intent-Driven Networking 4. The Python Automation Framework – Ansible Basics 5. The Python Automation Framework – Beyond Basics 6. Network Security with Python 7. Network Monitoring with Python – Part 1 8. Network Monitoring with Python – Part 2 9. Building Network Web Services with Python 10. AWS Cloud Networking 11. Working with Git 12. Continuous Integration with Jenkins 13. Test-Driven Development for Networks 14. Other Books You May Enjoy

Network dynamic operations

Our API can now provide static information about the network; anything that we can store in the database can be returned to the requester. It would be great if we can interact with our network directly, such as a query for the device information or to push configuration changes to the device.

We will start this process by leveraging the script we have already seen in Chapter 2, Low-Level Network Device Interactions, for interacting with a device via Pexpect. We will modify the script slightly into a function we can repeatedly use in chapter9_pexpect_1.py:

# We need to install pexpect for our virtual env
$ pip install pexpect

$ cat chapter9_pexpect_1.py
import pexpect

def show_version(device, prompt, ip, username, password):
device_prompt = prompt
child = pexpect.spawn('telnet ' + ip)
child.expect('Username:')
child.sendline...
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