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Episode #207: FastAPI as a web platform (not just APIs)

Published Fri, Nov 13, 2020, recorded Wed, Nov 4, 2020.

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Michael #1: fastapi-chameleon (and fastapi-jinja)

  • Chameleon via Michael, Jinja via Marc Brooks
  • Convert a FastAPI API app to a proper web app
  • Then just decorate the FastAPI view methods (works on sync and async methods):
    @router.post('/')
    @fastapi_chameleon.template('home/index.pt')
    async def home_post(request: Request):
        form = await request.form()
        vm = PersonViewModel(**form) 

        return vm.dict() # {'first':'Michael', 'last':'Kennedy', ...}
  • The view method should return a dict to be passed as variables/values to the template.
  • If a fastapi.Response is returned, the template is skipped and the response along with status_code and other values is directly passed through. This is common for redirects and error responses not meant for this page template.

Brian #2: Django REST API in a single file, without using DRF

  • Adam Johnson
    • He’s been on Test & Code a couple times, 128 & 135
  • Not sure if you should do this, but it is possible.
  • Example Django app that is a REST API that gives you information about characters from Rick & Morty. Specifically, just Rick and Morty.
    • / - redirects to /characters/
    • /characters/ - returns a JSON list
    • /characters - redirects to /characters/
    • /characters/1 - returns JSON info about Rick
    • /characters/2 - same, but for Morty
  • Shows off how with Django off the shelf, can do redirects and JSON output.
  • Shows data using dataclasses. Hardcoded here, but easy to see how you could get this data from a database or other part of your system.

Michael #3: 2020 StackOverflow survey results

  • Most Popular Technologies
  • Languages: JavaScript (68%), Python (44%), Java(40%)
  • Web frameworks: Just broken, jQuery? Seriously!?!
  • Databases: MySQL (56%), PostgreSQL (36%), Microsoft SQL Server (33%), MongoDB (26%)
  • Platforms: Windows (46%), macOS (28%), Linux(27%)
  • Most loved languages: Rust, TypeScript, Python
  • Most wanted languages: Python, JavaScript, Go
  • Most dreaded language: VBA & ObjectiveC
  • Most loved DBs: Redis (67%), PostgreSQL (64%), Elasticsearch (59%), MongoDB (56%)
  • Most wanted DBs: MongoDB (19%), PostgreSQL (16%)
  • Most dreaded DB: DB2

Brian #4: A Visual Guide to Regular Expression

  • Amit Chaudhary
  • Gentle introduction to regex by building up correct mental models using visual highlighting.
  • Goes through different patterns:
    • specific character
    • white space (any whitespace \s, tab \t, newline \n)
    • single-digit number \d
    • word characters \w : lowercase, uppercase, digits, underscore
      • this sometimes throws me, since w seems like it might somehow be related to whitespace. It’s not.
    • dot . : anything except newline
    • pattern negations:
    • \d is digits, \D is anything that is not a digit
    • \s whitespace, \S not whitespace
    • \w word characters, \W everything else
    • character sets with square brackets [], and optionally dash - for range
    • anchors
    • ^ beginning of line
    • $ end of line
    • escaping patterns with \
    • repetition with {}, *, +, ?
  • Using Python re module
    • findall
    • match and match.group
    • search

Michael #5: Taking credit

  • by Tim Nolet
  • Oh @awscloud I really do love you! But next time you fork my OS project https://github.com/checkly/headless-recorder and present it as your new service, give the maintainers a short "nice job, kids" or something.
  • Not necessary as per the APLv2 license, but still, ya know?
  • Amazon CloudWatch Synthetics launches Recorder to generate user flow scripts for canaries
  • A Chrome browser extension, to help you create canaries more easily.

Brian #6: Raspberry Pi 400

  • “complete personal computer, built into a compact keyboard”
  • by itself, or as a kit with mouse and power adapter and cables and such, for $100
  • 4 core, 64-bit processor, 4 GB RAM, wifi & LAN, can drive 2 displays, 4K video
  • 40-pin GPIO header, so you can still play with hardware and such.
  • There’s an adafruit video with Limor Fried where she describes this as something as close as we get today to an Apple IIe from my youth.
  • For me, IIe was at school, at home I had a TRS80 plugged into an old TV and using my sisters tape deck for disk storage.
  • This seems great for education use, but also as a second computer in your house, or a kids computer.
  • Comes with a Beginner’s Guide that includes getting started with Python

Extras:

Brian:

  • vim-adventures.com - with a dash. Practice vim key bindings while playing an adventure game. Super cool.

Michael:

Joke:

You built it, you run it.


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