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
strbind - lapidary text converter for translate an text file to the C-style string

strbind strbind - lapidary text converter for translate an text file to the C-style string. My motivation is fast adding large text chunks to the C co

Mihail Zaytsev 1 Oct 22, 2021
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
A simple text editor for linux

wolf-editor A simple text editor for linux Installing using Deb Package Download newest package from releases CD into folder where the downloaded acka

Focal Fossa 5 Nov 30, 2021
Um simulador de caixa registradora com database usando arquivos .txt

🛒 Caixa Registradora V2 ❓ - Como usar? Execute o caixa-registradora.py, nele vai ter um menu interativo, você pode cadastrar diversos produtos em um

Gabriel 0 Sep 25, 2022
知乎评论区词云分析

zhihu-comment-wordcloud 知乎评论区词云分析 起源于:如何看待知乎问题“男生真的很不能接受彩礼吗?”的一个回答下评论数超8万条,创单个回答下评论数新记录? 项目代码说明 2.download_comment.py 下载全量评论 2.word_cloud_by_dt 生成词云 2

李国宝 10 Sep 26, 2022
You can encode and decode base85, ascii85, base64, base32, and base16 with this tool.

You can encode and decode base85, ascii85, base64, base32, and base16 with this tool.

8 Dec 20, 2022
This repos is auto action which generating a wordcloud made by Twitter.

auto_tweet_wordcloud This repos is auto action which generating a wordcloud made by Twitter. Preconditions Install Python dependencies pip install -r

tubone(Yu Otsubo) 0 Apr 29, 2022
Python port of Google's libphonenumber

phonenumbers Python Library This is a Python port of Google's libphonenumber library It supports Python 2.5-2.7 and Python 3.x (in the same codebase,

David Drysdale 3.1k Dec 29, 2022
a python package that lets you add custom colors and text formatting to your scripts in a very easy way!

colormate Python script text formatting package What is colormate? colormate is a python library that lets you add text formatting to your scripts, it

Rodrigo 2 Dec 14, 2022
REST API for sentence tokenization and embedding using Multilingual Universal Sentence Encoder.

MUSE stands for Multilingual Universal Sentence Encoder - multilingual extension (supports 16 languages) of Universal Sentence Encoder (USE).

Dani El-Ayyass 47 Sep 05, 2022
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
A minimal python script for generating multiple onetime use bip39 seed phrases

seed_signer_ontimes WARNING This project has mainly been used for local development, and creation should be ran on a air-gapped machine. A minimal pyt

CypherToad 4 Sep 12, 2022
Paranoid text spacing in Python

pangu.py Paranoid text spacing for good readability, to automatically insert whitespace between CJK (Chinese, Japanese, Korean) and half-width charact

Vinta Chen 194 Nov 19, 2022
Convert text to morse code and play morse code sound.

Convert text(english) to morse codes and play morse sound!

Mohammad Dori 5 Jul 15, 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
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
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
A query extract python package

A query extract python package

Fayas Noushad 4 Nov 28, 2021
The project is investigating methods to extract human-marked data from document forms such as surveys and tests.

The project is investigating methods to extract human-marked data from document forms such as surveys and tests. They can read questions, multiple-choice exam papers, and grade.

Harry 5 Mar 27, 2022
Format Covid values to ASCII-Table (Only for Germany and Austria)

Covid-19-Formatter (Only for Germany and Austria) Dieses Script speichert die gemeldeten Daten des RKIs / BMSGPK und formatiert diese zu einer Asci Ta

56 Jan 22, 2022