eyeseast

I have an updated version of this on my blog here: https://chrisamico.com/blog/2023-01-14/python-setup/.

Python

This is my recommended Python setup, as of Fall 2022. The Python landscape can be a confusing mess of overlapping tools that sometimes don't work well together. This is an effort to standardize our approach and environments.

Tools and helpful links:

• Python docs: https://docs.python.org/3/
• Python Standard Library:  - Start here when you're trying to solve a specific problem

TheRockStarDBA

1. Working of indexes in PostgreSQL : https://dba.stackexchange.com/a/7484/8783

TheRockStarDBA

• DevOps culture: Learning culture : https://cloud.google.com/solutions/devops/devops-culture-learning-culture
• Awesome Site Reliability Engineering : https://github.com/TheRockStarDBA/awesome-sre or https://sre.xyz/
• ParallelChange : https://martinfowler.com/bliki/ParallelChange.html
• Deployment automation : https://cloud.google.com/solutions/devops/devops-tech-deployment-automation
• Defining SLOs : https://cloud.google.com/solutions/defining-SLOs
• Setting SLOs: a step-by-step guide : https://cloud.google.com/blog/products/management-tools/practical-guide-to-setting-slos
• Setting SLOs: observability using custom metrics : https://cloud.google.com/blog/products/management-tools/observability-using-custom-metrics
• Meeting reliability challenges with SRE principles : https://cloud.google.com/blog/products/management-tools/meeting-reliability-challenges-with-sre-principles
• How maintenance windows affect your error budget—SRE tips : https://cloud.google.com/blog/products/management-tools/sre-error-budget

TheRockStarDBA

        for ($i=1;$i -le 5;$i++) {
            try {
                Connect-ExchangeOnline -Credential $Credential -Verbose:$false -ShowProgress $false -Force -WarningAction silentlycontinue 6>$null
            } catch {
                if ($i -ge 2) {Write-Warning "Connect-ExchangeOnline Retry $i"}
                [float]$sleepTimer = [Math]::Pow(2,$i) + [float]((Get-Random -Max 1000) /1000 )
                Write-Warning "Connect-ExchangeOnline PS Remoting Error (retry: $sleeptimer sec): $PSItem"
                Start-Sleep $sleeptimer
                continue
            }

TheRockStarDBA

• Python learning and/or Coding Challange :
  • https://exercism.io/tracks/python
  • https://www.codecademy.com/courses/learn-python-3
  • https://www.learnpython.dev/01-introduction/
  • https://realpython.com/courses/functional-programming-python/
  • https://amitness.com/2019/08/math-for-programmers/
  • https://snarky.ca/why-you-should-use-python-m-pip/
  • https://courses.packtpub.com/courses/take/python/texts/8903380-exercise-1-getting-to-know-the-order-of-operations
  • https://github.com/PacktWorkshops/The-Python-Workshop
• https://www.freecodecamp.org/news/search/?query=python

haranjackson

REGION=eu-west-1
VER=1.7.3
RUNTIME=python3.7

docker run -v $(pwd):/out -it lambci/lambda:build-$RUNTIME \
    pip install scrapy==$VER -t /out/build/scrapy/python

cd build/scrapy
zip -r ../../scrapy.zip python/
cd ../..

TheRockStarDBA

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

TheRockStarDBA

<#
.SYNOPSIS

Reports if your password is pwned by querying haveibeenpwned.com

.DESCRIPTION

Query haveibeenpwned.com to see if a password has appeared in a breach.

The query sends the first 5 characters of the SHA1 hash, so the query should be considered safe and anonymous.

nohwnd

#Requires -RunAsAdministrator

function Uninstall-Pester ([switch]$All) {
    if ([IntPtr]::Size * 8 -ne 64) { throw "Run this script from 64bit PowerShell." }

    #Requires -RunAsAdministrator
    $pesterPaths = foreach ($programFiles in ($env:ProgramFiles, ${env:ProgramFiles(x86)})) {
        $path = "$programFiles\WindowsPowerShell\Modules\Pester"
        if ($null -ne $programFiles -and (Test-Path $path)) {
            if ($All) { 

refactorsaurusrex

$path = 'C:\text.txt'
$output = 'This is an output string'

# This works...
[System.IO.File]::WriteAllLines($path, $output)

# But this doesn't. WTF!
[System.IO.File]::AppendAllLines($path, $output)
# Result: 'Cannot find an overload for "AppendAllLines" and the argument count: "2".'