Python Bytes
Python Bytes
Jul 3, 2020
#188 Will there be a "switch" in Python the language?
32 min

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Michael #1: Making a trading bot asynchronous using Python’s “unsync” library

  • by Matt Gosden
  • The older way — using the threading and multiprocessing libraries
  • The newer way — using async and await from the asyncio library embedded into core Python from 3.7 onwards
  • The easier way (I think)— using the @unsync decorator from the Python unsync library
  • Somewhat realistic example worth looking at.
  • Could discuss scalability more
  • Also, proper def async and asyncio.sleep() for those playing at home
  • But its absence kind shows unsync winning anyway. 🙂 It does work, right?

Brian #2: *Fruit salad scrum estimation scale*

  • From twitter question by Lacy Henschel, answered by Kathleen Jones
  • Fruit related to work
    • how easy
    • potential for mess
    • how many seeds, possible problems
    • does it need divided
  • The scale
    • 1 - grape - trivial
    • 2 - apple - may take a bit of time but everyone knows how to divide it
    • 3 - cherry - easy but with some unknowns (what do you do with the pit?)
    • 5 - pineapple - somewhat undefined, no major unknowns, still a lot of work (lots of opinions on how to cut it)
    • 8 - watermelon - lots of work, some unknowns, messy (don’t know what you are getting into until you cut it open)
    • ?? - tomato - unknown task, needs more info before estimating (doesn’t belong in a fruit salad)
    • ?? - avacado - not scopable, probably urgent (goes bad quickly)

Michael #3: Math to Code

  • Math to Code is an interactive Python tutorial to teach engineers how to read and implement math using the NumPy library.
  • by vernon thommeret
  • Nice flashcard style of learning the building blocks of np for standard math
  • Give it a try, solutions if you get stuck
  • Python and NP together
  • Source at github
  • Interesting building blocks
  • Skulpt for interpreting Python
  • Skulpt NumPy for a subset of NumPy
  • KaTex for rendering LaTeX
  • Next.js for frontend framework
  • Tailwind CSS for styling
  • remark for rendering Markdown questions
  • gray-matter for extracting Markdown frontmatter
  • RealFavIconGenerator for generating favicons

Brian #4: PEP 622 -- Structural Pattern Matching

  • Draft status, targeted for Python 3.10
  • Syntax looks similar to switch/case statement, even though two switch PEPs were rejected earlier
  • Designed not only to optimize if/elif/else statements but also to focus on sequence, mapping, and object destructuring.
  • match/case statement with many allowed patterns:
    • literal pattern: would then act similar to a switch/case statement
    • name pattern: assigns expression to new variable if previous case doesn’t succeed
    • constant value pattern: enums, similar to literal
    • sequence pattern: works like unpacking assignment
    • mapping pattern: like sequence unpacking, but for mappings, like dictionaries
    • class pattern: create objects for each case and call __match__()
    • combining patterns: | for multiple patterns. including binding patterns like name
    • guards: if expression to further clarify a case
    • named sub-patterns: ok. still getting my head around this

Michael #5: CodeArtifact from AWS

  • via Tormod Macleod
  • AWS CodeArtifact is a fully managed software artifact repository service that makes it easy for organizations of any size to securely store, publish, and share packages used in their software development process
  • AWS CodeArtifact works with commonly used package managers and build tools such as Maven and Gradle (Java), npm and yarn (JavaScript), pip and twine (Python), making it easy to integrate CodeArtifact into your existing development workflows.
  • Can be configured to automatically fetch software packages from public artifact repositories such as npm public registry, Maven Central, and Python Package Index (PyPI), ensuring teams have reliable access to the most up-to-date packages.

Brian #6: invoke

  • suggested by Joreg Benesch
  • replacement for Makefiles
  • Confusion:
    • documentation is at pyinvoke.org
    • install with pip install invoke
    • there’s also another pypi package, called pyinvoke, which is NOT what we are talking about.
  • invoke:
    • task execution library
    • Write tasks.py files in Python for Makefile like things
    • tasks are Python functions decorated with @task, like

`` @task def build(c, clean=False): if clean: print("Cleaning!") print("Building!") - invoke tasks withinvoke $ invoke build -c $ invoke build --clean - you can - run shell commands withc.run()` - declare pre-tasks, tasks that need to run before this one. like “build” requires “clean”, etc. - namespaces with multiple files - tool intended for building documentation, but could probably run lots of stuff with it, like deployment, testing, etc.

Extras:

Brian:

  • Michael:

  • From Guido: Python 3.9.0 beta 3 is out now, for your immediate testing. Wait, what happened to beta 2? Interesting story.

  • The next pre-release, the fourth beta release of Python 3.9, will be 3.9.0b4. It is currently scheduled for 2020-06-29.

Joke:

Kubernetes Podcast from Google
Kubernetes Podcast from Google
Adam Glick and Craig Box
KubeCon NA 2020, with Stephen Augustus
Join us for all the news from KubeCon NA 2020, and a conversation with conference co-chair Stephen Augustus. Stephen is a Senior Open Source Engineer on the VMware Tanzu team, a chair of Kubernetes’ SIG Release, and a leader in many other parts of the project, past and present. Do you have something cool to share? Some questions? Let us know: * web: kubernetespodcast.com * mail: kubernetespodcast@google.com * twitter: @kubernetespod Chatter of the week * The kākāpō wins Bird of the Year * We’re off for 2 weeks. See you on December 8! News of the week * Cisco acquires Banzai Cloud * CNCF announces Cloud Native Survey 2020 results * Red Hat: New edge features, industrial AI/ML blueprint and AWS launch * CNCF End User Tech Radar for storage * New End User benefits * Envoy Mobile joins the CNCF * New sandbox projects * cert-manager * cdk8s * Kyverno * OpenKruise * Pravega * SchemaHero * Tinkerbell * k8ssandra from Datastax * Episode 98 with Sam Ramji * k0s from Mirantis * Solo.io announces Gloo Mesh Enterprise and rebrands products * Episode 55, with Idit Levine * Pinniped * Shipa launches Ketch * Kinvolk launches Headlamp * The SPIFFE book “Solving The Bottom Turtle” * Episode 45, with Andrew Jessup * Anthos Developer Sandbox * GKE ingress features * Ambassador Labs takes in $18m and launches v1.9 * Tanzu SQL: Postgres on Kubernetes * Lightning round: * Accurics extends Terrascan * AWS adds containers to Lightsail * Arrikto takes $10m in funding * Brobridge releases Gravity * CircleCI runner is GA * Cloud66 for agencies and multiple database support * Cloudflare Origin CA cert-manager plugin * Cloudical Vanillastack * Cloudify version 5.1 * Codefresh launches GitOps 2.0 features * Commvault backup-as-a-service * Diamanti Spektra 3.1 and customer portal * Dynatrace PurePath 4 * Elastisys Compliant Kubernetes * The Fairwinds Kubernetes Maturity Model * Garden takes “seed” funding * Gremlin adds soundproofing * Humio Operator * Instana adds observability tools on Kubernetes * Intuit runs TurboTax on Kubernetes * Kioxia announces a new storage offering * Kubecost adds features for monitoring outside a cluster * KubeMQ adds automatic network creation * Kubermatic updates KubeOne to v1.1 * Kubernative SINA * Kublr 1.19 * Lablup announced Backend.ai 20.09 RC * Magalix launches KubeAdvisor 2.0 * Mayadata launches Kubera Propel and Kubera Chaos * Mirantis adds extensions to Lens * Puppet Labs adds Relay to Puppet Enterprise * Reblaze announces Curiefense to add WAF to Envoy * Replicates wants to help you Troubleshoot * Styra adds new editions to DAS * Sysdig introduces Kubernetes-native network security (ZTNSK) and partners with IBM Cloud * TrilioVault for Kubernetes v2.0 * Zerto for Kubernetes * Google Open Source Live Kubernetes Links from the interview * KubeCon NA 2020 * Episode 117, with Constance Caramanolis * CNCF Twitch * SIG Friday: ping Stephen for the current link * Slack * CNCF Slack * Kubernetes Slack * Hallway Track * Kubernetes Podcast chat * CoreOS * CoreOS Tectonic * CoreOS acquired by Red Hat * Tectonic on Azure * SIG Azure * SIG Release * SIG PM (retired) * Kubernetes Enhancement Process * Receipts process KEP * Sidecar containers - KEP closed! * Production readiness review * Episode 10, with Josh Berkus and Tim Pepper * Release managers * Black Lives Matter announcement banner * Better announcements * Kubernetes Naming working group * Inclusive Naming project * Dan Kohn memorial * Stephen Augustus on Twitter and on the web
53 min
Streaming Audio: A Confluent podcast about Apache Kafka
Streaming Audio: A Confluent podcast about Apache Kafka
Confluent, original creators of Apache Kafka®
Multi-Tenancy in Apache Kafka ft. Anna Pozvner
Multi-tenancy has been quite the topic within the Apache Kafka® community. Anna Povzner, an engineer on the Confluent team, spends most of her time working on multi-tenancy in Kafka in Confluent Cloud. Anna kicks off the conversation with Tim Berglund (Senior Director of Developer Experience, Confluent) by explaining what multi-tenancy is, why it is worthy to be desired, and advantages over single-tenant architecture. By putting more applications and use cases on the same Kafka cluster instead of having a separate Kafka cluster for each individual application and use case, multi-tenancy helps minimize the costs of physical machines and also maintenance. She then switches gears to discuss quotas in Kafka. Quotas are essentially limits—you must set quotas for every tenant (or set up defaults) in Kafka. Anna says it’s always best to start with bandwidth quotas because they’re better understood. Stick around until the end as Anna gives us a sneak peek on what’s ahead for multi-tenant Kafka, including KIP-612, the addition of the connection rate quota, which will help protect brokers. EPISODE LINKS * Sharing is Caring: Toward Creating Self-Tuning Multi-Tenant Kafka (Anna Povzner, Confluent) Join the Confluent Community Slack * Learn more with Kafka tutorials, resources, and guides at Confluent Developer * Live demo: Kafka streaming in 10 minutes on Confluent Cloud * Use *60PDCAST* to get an additional $60 of free Confluent Cloud usage (details)
44 min
Software Defined Talk
Software Defined Talk
Software Defined Talk LLC
Episode 272: This time we’re doing it in green
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1 hr 5 min
Azure DevOps Podcast
Azure DevOps Podcast
Jeffrey Palermo
Scott Nichols on the State of Azure - Part 2 - Episode 116
This episode is part 2 of the interview with Scott Nichols! Be sure to tune in to part 1 first before joining in on this episode’s conversation. Scott Nichols is a Sr. Cloud Solutions Architect, Scott works for the commercial enterprise division serving the west region. He is also the leader of the .NET and the Azure user groups in Boise, Idaho. He started his career in the IT profession in 1993 as a mainframe and web developer. Since then, he has served as a Lead Software Engineer/Solution Architect, a Software Development Engineering Manager, a Sr. Cloud Software Solution Architect, a Sr. Enterprise Solution Architect, and of course, most recently, a Sr. Cloud Solutions Architect at Microsoft since 2019. In this second part, the interview transitions from discussing the state of Azure and the Cloud industry into talking about how customers are modernizing their existing applications and infrastructure for Azure. Scott shares about infrastructure as code tools he sees as having the most traction right now, his recommendations for those looking to get their application into Azure, and what he sees as being the most successful pathways for his customers utilizing Azure infrastructure. Topics of Discussion: [:38] Be sure to visit AzureDevOps.Show for past episodes and show notes. [1:01] About The Azure DevOps Podcast and Jeffrey’s offer to speak at virtual user groups. [1:11] Clear Measure is hiring! Be sure to check out the link in the show notes. [1:33] Jeffrey welcomes Scott back to the podcast for part 2 and shares about this episode’s conversation. [2:06] The infrastructure as code tools Scott sees as having the most traction. [4:35] Does Scott have any customers that have used Azure Bicep yet? [4:56] How Scott thinks about Azure infrastructure and what he sees as being most successful with his customers. [7:42] For certain tweaks in the infrastructure, where does an ARM template work? [9:45] What is the mechanism in Azure that would know that the Powershell script has not been run yet or has already been run so that it doesn’t run it again? [11:07] A word from Azure DevOps Podcast’s sponsor: Clear Measure. [11:38] For people looking to get their application into Azure, what would Scott recommend their next steps be? [20:37] Jeffrey thanks Scott for joining the podcast and Scott offers some parting words of advice for developers. Mentioned in this Episode: Azure DevOps Clear Measure (Sponsor) .NET DevOps for Azure: A Developer's Guide to DevOps Architecture the Right Way, by Jeffrey Palermo — Available on Amazon! bit.ly/dotnetdevopsebook — Click here to download the .NET DevOps for Azure ebook! Jeffrey Palermo’s Youtube Jeffrey Palermo’s Twitter — Follow to stay informed about future events! The Azure DevOps Podcast’s Twitter: @AzureDevOpsShow Scott Nichols’ LinkedIn Scott Nichols’ Twitter @TheScottNichols Azure Architecture Center - Microsoft Amazon Web Services (AWS) Azure Architectures - Microsoft Docs Google Cloud (GCP) Microsoft Cloud Adoption Framework (CAF) Azure Bicep on GitHub .NET Conference 2020 Python Terraform Azure Resource Manager (ARM) CICD PowerShell HashiCorp Want to Learn More? Visit AzureDevOps.Show for show notes and additional episodes.
23 min
The Cloudcast
The Cloudcast
Cloudcast Media
eBPF & Cilium Cloud-native Networking
Dan Wendlandt (@danwendlandt, CEO/Co-Founder @Isovalent talks about the evolution of cloud networking, eBPF and Cilium for programmable infrastructure, and blurring the lines between networking, security and service-mesh.  *SHOW: *476 *SHOW SPONSOR LINKS:* * CloudAcademy -Build hands-on technical skills. Get measurable results.  * Get 50% of the monthly price of CloudAcademy by using code CLOUDCAST * Datadog Security Monitoring Homepage - Modern Monitoring and Analytics * Try Datadog yourself by starting a free, 14-day trial today. Listeners of this podcast will also receive a free Datadog T-shirt. * Learn more about Fauna: https://www.fauna.com/serverless * Try FaunaDB for Free: https://dashboard.fauna.com/accounts/register *CLOUD NEWS OF THE WEEK *- http://bit.ly/cloudcast-cnotw *PodCTL Podcast is Back (Enterprise Kubernetes) *- http://podctl.com *SHOW NOTES:* * Isovalent (homepage) * Cilium (homepage) * What is eBPF?  *Topic 1 *- Welcome to the show. We’ve been following your work for a while (Nicira, OpenShift networking, etc), but tell our audience a little bit about your background. *Topic 2* - A few years ago I wrote an article that said, “if you’re in networking, the #1 skill you should learn is Linux”. Why has there been so much shift from “traditional networking” to so many new capabilities being implemented in software, and specifically Linux? *Topic 3 *- Help us understand these two new concepts - eBPF and Cilium. It’s new packet filtering, it’s container networking, it’s multi-cluster networking, it can help with observability - lots going on here.  *Topic 4 *- What are some of the gaps in today’s networking/filtering/observability stacks that can improve with eBPF/Cilium?*   * *Topic 5 *- We’ve seen quite a few companies evolve from expertise in an open-source project to commercial offerings. What lessons have you learned from other companies that shape how Isovalent will both go-to-market and also engage with ecosystem partners?* * *Topic 6 *- What are some of the common use-cases or applications you see that highlight the value of the Isovalent stack?  *FEEDBACK?* * Email: show at thecloudcast dot net * Twitter: @thecloudcastnet
36 min
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