DevNet Associate DEVASC 200-901 Official Certification Guide by Adrian Iliesiu (z-lib.org)

the child class in the Python code. Example 4-2 shows how this works, creating a second class named Switch, using the Router cla ...

You can add another variable named sw1 and instantiate the Switch class just as you did the Router class, by passing in attribut ...

and allow them to be physically moved into other files, called modules, that can be included in your main Python code with the i ...

those included as part of the standard library in Python are built this way. Importing a Module All modules are accessed the sam ...

>>> help(math) Help on module math: NAME math MODULE REFERENCE https://docs.python.org/3.8/library/math The following d ...

sqrt(x, /) Return the square root of x. If you want to get a square root of a number, you can use the sqrt() method by calling m ...

Importing a whole module when you need only a specific method or function adds unneeded overhead. To help with this, Python allo ...

module, you just need to save all of the code for defining the class and the attributes and functions as a separate file with th ...

rtr2 = Router('isr4221', '16.9.5', '10.10.10.5') sw1 = Switch('Cat9300', '16.9.5', '10.10.10.8') print('Rtr1\n', rtr1.getdesc(), ...

automate network infrastructure. Many of these modules are used throughout this book, so you will be able to see them in action. ...

import time Modules for working with data: xmltodict: This module translates XML-formatted files into native Python dictionaries ...

models into other data structures, such as XSD (XML Schema Definition). Use the following command to install this module: pip in ...

pysnmp: This is a Python implementation of an SNMP engine for network management. It allows you to interact with older infrastru ...

import unittest pyats: This module was a gift from Cisco to the development community. Originally named Genie, it was an interna ...

Table 4-2 Key Topics Key Topic ElementDescriptionPage Number Paragraph Defining functions 88 Paragraph The value of object-orien ...

Chapter 5 Working with Data in Python This chapter covers the following topics: File Input and Output: This section shows how to ...

are in doubt about your answers to these questions or your own assessment of your knowledge of the topics, read the entire chapt ...

2. Nothing; Python sees it as one big string 3. \n or EoF 4. All of the above What syntax would you use to open a text file to ...

4. All of the above 8. When does the finally block execute? 1. After the try block is successful 2. After the except block 3. At ...

convention), with a newline character at the end (\n for Python). There are just two functions that you need to know when workin ...