Python Q&A for Network Engineers

Overview

Q & A

I am often asked questions about how to solve this or that problem, and I decided to post these questions and solutions here, in case it is also useful to someone.

The description of the question can be used as a task and you can first solve it yourself, and then see the solution.

QA Description Topics/modules used in solutions
1 Split the interface configuration into two parts regex, format, jinja2
2 Network Topology Discovery Using CDP/LLDP scrapli, regex, queue, click, rich
3 Filter JSON data by key recursion, generator, regex, click
4 Collect Port Status Information scrapli, concurrent.futures, regex, rich

Q&A 1 Split the interface configuration into two parts

English translation

Надо разбить настройку интерфейса на две части. Есть конфигурация интерфейса такого вида:

set interfaces ae0 unit 1001 description "EXAMPLE_1001"
set interfaces ae0 unit 1001 vlan-tags outer 18
set interfaces ae0 unit 1001 vlan-tags inner 10
set interfaces ae0 unit 1001 family inet policer input P-IN-L2
set interfaces ae0 unit 1001 family inet policer output P-OUT-L2
set interfaces ae0 unit 1001 family inet address 60.1.1.1/30

Эту конфигурацию надо разбить на две части:

set interfaces ae9 unit 1001 description "EXAMPLE_1001"
set interfaces ae9 unit 1001 encapsulation vlan-bridge
set interfaces ae9 unit 1001 vlan-tags outer 18
set interfaces ae9 unit 1001 vlan-tags inner 10
set interfaces ae9 unit 1001 family bridge policer input P-IN-L2
set interfaces ae9 unit 1001 family bridge policer output P-OUT-L2

и

set interfaces irb unit 1001 description "EXAMPLE_1001"
set interfaces irb unit 1001 family inet address 60.1.1.1/30
set interfaces irb unit 1001 mac 00:ff:3c:01:01:01

Подробнее

Q&A 2 Network Topology Discovery Using CDP/LLDP

English translation

Надо обнаружить топологию сети через вывод CDP (считаем что CDP есть на всех устройствах). Для старта должен быть известен IP-адрес одного устройства и параметры подключения по SSH ко всем устройствам в сети.

Надо подключиться к первому устройству, дать команду sh cdp neighbors detail, получить всех соседей и их IP-адреса и подключаться к каждому соседу. На каждом соседе опять дать команду sh cdp neighbors detail и получить соседей этого устройства. Так надо пройтись по всей сети и собрать информацию об устройствах и топологии.

Подробнее

Q&A 3 Filter JSON data by key

English translation

Задача отфильтровать данные из JSON файла по указанному ключу. Технически речь об отборе данных из словаря/списка, так как после чтения данных в Python это уже будет Python list/dict. JSON упоминается потому что именно в этом формате часто очень большая вложенность.

$ python solution_2a.py json_files/cfg.json name
['ae1.185', 'v185', 'ae47.128', 'v128', 'ae1.139', 'v139', 'ae1.140', 'v140', 'User1', 'User2', 'User3', 'ge-0/0/0', '192.168.1.1/29', 11, '10.1.1.1/29', 'ge-0/0/1', '192.168.199.1/30']

$ python solution_2a.py json_files/cfg.json user
[
    [
        {'authentication': {'encrypted-password': 'password'}, 'class': 'super-user', 'name': 'User1', 'uid': 1000},
        {'authentication': {'encrypted-password': 'password'}, 'class': 'super-user', 'name': 'User2', 'uid': 2001},
        {'authentication': {'encrypted-password': 'password'}, 'class': 'super-user', 'name': 'User3', 'uid': 2002}
    ]
]

$ python solution_2a.py json_files/cfg.json user name
['User1', 'User2', 'User3']

Q&A 4 Collect Port Status Information

English translation

Задача собрать информацию о статусе портов на оборудовании (up/down/admin down для Cisco IOS). На первом этапе собирается информация о всех портах (Loopback/физические/Tunnel/...) и их статусе. На втором этапе из собраной информации надо отобрать только физические порты. И на третьем сохранять информацию о статусе портов и добавить возможность сравнивать изменения в статусе портов (текущий статус с последним записанным).

solution_1

solution_1_stats

Owner
Natasha Samoylenko
Natasha Samoylenko
Aml - anti-money laundering

Anti-money laundering Dedect relationship between A and E by tracing through payments with similar amounts and identifying payment chains. For example

3 Nov 21, 2022
The Scary Story - A Text Adventure

This is a text adventure which I made in python 3. This is one of my first big projects so any feedback would be greatly appreciated.

2 Feb 20, 2022
Redlines produces a Markdown text showing the differences between two strings/text

Redlines Redlines produces a Markdown text showing the differences between two strings/text. The changes are represented with strike-throughs and unde

Houfu Ang 2 Apr 08, 2022
This is a text summarizing tool written in Python

Summarize Written by: Ling Li Ya This is a text summarizing tool written in Python. User Guide Some things to note: The application is accessible here

Marcus Lee 2 Feb 18, 2022
Implementation of hashids (http://hashids.org) in Python. Compatible with Python 2 and Python 3

hashids for Python 2.7 & 3 A python port of the JavaScript hashids implementation. It generates YouTube-like hashes from one or many numbers. Use hash

David Aurelio 1.4k Jan 02, 2023
Code Jam for creating a text-based adventure game engine and custom worlds

Text Based Adventure Jam Author: Devin McIntyre Our goal is two-fold: Create a text based adventure game engine that can parse a standard file format

HTTPChat 4 Dec 26, 2021
This script has been created in order to find what are the most common demanded technologies in Data Engineering field.

This is a Python script that given a whole corpus of job descriptions and a file with keywords it extracts the number of number of ocurrences of these keywords and write it to a file. This script it

Antonio Bri Pérez 0 Jul 17, 2022
LazyText is inspired b the idea of lazypredict, a library which helps build a lot of basic models without much code.

LazyText is inspired b the idea of lazypredict, a library which helps build a lot of basic models without much code. LazyText is for text what lazypredict is for numeric data.

Jay Vala 13 Nov 04, 2022
Build a translation program similar to Google Translate with Python programming language and QT library

google-translate Build a translation program similar to Google Translate with Python programming language and QT library Different parts of the progra

Amir Hussein Sharifnezhad 3 Oct 09, 2021
Deasciify-highlighted - A Python script for deasciifying text to Turkish and copying clipboard

deasciify-highlighted is a Python script for deasciifying text to Turkish and copying clipboard.

Ümit Altıntaş 3 Mar 18, 2022
A program that looks through entered text and replaces certain commands with mathematical symbols

TextToSymbolConverter A program that looks through entered text and replaces certain commands with mathematical symbols Example: Syntax: Enter text in

1 Jan 02, 2022
Utility for Text Normalisation or Inverse Normalisation

Text Processor Text Normalisation or Inverse Normalisation for Indonesian, e.g. measurements "123 kg" - "seratus dua puluh tiga kilogram" Currency/Mo

Cahya Wirawan 2 Aug 11, 2022
A non-validating SQL parser module for Python

python-sqlparse - Parse SQL statements sqlparse is a non-validating SQL parser for Python. It provides support for parsing, splitting and formatting S

Andi Albrecht 3.1k Jan 04, 2023
Fixes mojibake and other glitches in Unicode text, after the fact.

ftfy: fixes text for you print(fix_encoding("(ง'⌣')ง")) (ง'⌣')ง Full documentation: https://ftfy.readthedocs.org Testimonials “My life is li

Luminoso Technologies, Inc. 3.4k Jan 08, 2023
Amazing GitHub Template - Sane defaults for your next project!

🚀 Useful README.md, LICENSE, CONTRIBUTING.md, CODE_OF_CONDUCT.md, SECURITY.md, GitHub Issues and Pull Requests and Actions templates to jumpstart your projects.

276 Jan 01, 2023
Fuzzy string matching like a boss. It uses Levenshtein Distance to calculate the differences between sequences in a simple-to-use package.

Fuzzy string matching like a boss. It uses Levenshtein Distance to calculate the differences between sequences in a simple-to-use package.

SeatGeek 1.2k Jan 01, 2023
Split large XML files into smaller ones for easy upload

Split large XML files into smaller ones for easy upload. Works for WordPress Posts Import and other XML files.

Joseph Adediji 1 Jan 30, 2022
A Python library that provides an easy way to identify devices like mobile phones, tablets and their capabilities by parsing (browser) user agent strings.

Python User Agents user_agents is a Python library that provides an easy way to identify/detect devices like mobile phones, tablets and their capabili

Selwin Ong 1.3k Dec 22, 2022
Widevine KEY Extractor in Python

Widevine Client 3 This was originally written by T3rry7f. This repo is slightly modified version of his repo. This only works on standard Windows! Usa

Vank0n (SJJeon) 68 Dec 29, 2022