Create a Serverless Python API with AWS Amplify and Flask

In this tutorial, we will create a Flask API using the super fun Python programming language – the theme of the app will be to list Britney Spears songs! We’ll deploy using AWS Amplify’s command line where we’ll generate an AWS Lambda function. We’ll also use an Amazon DynamoDB database to store our data and implement routes for all CRUD functionality.

👩🏼‍💻 Links Mentioned 👩🏼‍💻

Flask - https://flask.palletsprojects.com/en/1.1.x/
AWS Amplify Documentation - https://docs.amplify.aws/
Full Code - https://github.com/aspittel/britney-api

#aws #serverless #api #python #flask

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Create a Serverless Python API with AWS Amplify and Flask
Easter  Deckow

Easter Deckow

1655630160

PyTumblr: A Python Tumblr API v2 Client

PyTumblr

Installation

Install via pip:

$ pip install pytumblr

Install from source:

$ git clone https://github.com/tumblr/pytumblr.git
$ cd pytumblr
$ python setup.py install

Usage

Create a client

A pytumblr.TumblrRestClient is the object you'll make all of your calls to the Tumblr API through. Creating one is this easy:

client = pytumblr.TumblrRestClient(
    '<consumer_key>',
    '<consumer_secret>',
    '<oauth_token>',
    '<oauth_secret>',
)

client.info() # Grabs the current user information

Two easy ways to get your credentials to are:

  1. The built-in interactive_console.py tool (if you already have a consumer key & secret)
  2. The Tumblr API console at https://api.tumblr.com/console
  3. Get sample login code at https://api.tumblr.com/console/calls/user/info

Supported Methods

User Methods

client.info() # get information about the authenticating user
client.dashboard() # get the dashboard for the authenticating user
client.likes() # get the likes for the authenticating user
client.following() # get the blogs followed by the authenticating user

client.follow('codingjester.tumblr.com') # follow a blog
client.unfollow('codingjester.tumblr.com') # unfollow a blog

client.like(id, reblogkey) # like a post
client.unlike(id, reblogkey) # unlike a post

Blog Methods

client.blog_info(blogName) # get information about a blog
client.posts(blogName, **params) # get posts for a blog
client.avatar(blogName) # get the avatar for a blog
client.blog_likes(blogName) # get the likes on a blog
client.followers(blogName) # get the followers of a blog
client.blog_following(blogName) # get the publicly exposed blogs that [blogName] follows
client.queue(blogName) # get the queue for a given blog
client.submission(blogName) # get the submissions for a given blog

Post Methods

Creating posts

PyTumblr lets you create all of the various types that Tumblr supports. When using these types there are a few defaults that are able to be used with any post type.

The default supported types are described below.

  • state - a string, the state of the post. Supported types are published, draft, queue, private
  • tags - a list, a list of strings that you want tagged on the post. eg: ["testing", "magic", "1"]
  • tweet - a string, the string of the customized tweet you want. eg: "Man I love my mega awesome post!"
  • date - a string, the customized GMT that you want
  • format - a string, the format that your post is in. Support types are html or markdown
  • slug - a string, the slug for the url of the post you want

We'll show examples throughout of these default examples while showcasing all the specific post types.

Creating a photo post

Creating a photo post supports a bunch of different options plus the described default options * caption - a string, the user supplied caption * link - a string, the "click-through" url for the photo * source - a string, the url for the photo you want to use (use this or the data parameter) * data - a list or string, a list of filepaths or a single file path for multipart file upload

#Creates a photo post using a source URL
client.create_photo(blogName, state="published", tags=["testing", "ok"],
                    source="https://68.media.tumblr.com/b965fbb2e501610a29d80ffb6fb3e1ad/tumblr_n55vdeTse11rn1906o1_500.jpg")

#Creates a photo post using a local filepath
client.create_photo(blogName, state="queue", tags=["testing", "ok"],
                    tweet="Woah this is an incredible sweet post [URL]",
                    data="/Users/johnb/path/to/my/image.jpg")

#Creates a photoset post using several local filepaths
client.create_photo(blogName, state="draft", tags=["jb is cool"], format="markdown",
                    data=["/Users/johnb/path/to/my/image.jpg", "/Users/johnb/Pictures/kittens.jpg"],
                    caption="## Mega sweet kittens")

Creating a text post

Creating a text post supports the same options as default and just a two other parameters * title - a string, the optional title for the post. Supports markdown or html * body - a string, the body of the of the post. Supports markdown or html

#Creating a text post
client.create_text(blogName, state="published", slug="testing-text-posts", title="Testing", body="testing1 2 3 4")

Creating a quote post

Creating a quote post supports the same options as default and two other parameter * quote - a string, the full text of the qote. Supports markdown or html * source - a string, the cited source. HTML supported

#Creating a quote post
client.create_quote(blogName, state="queue", quote="I am the Walrus", source="Ringo")

Creating a link post

  • title - a string, the title of post that you want. Supports HTML entities.
  • url - a string, the url that you want to create a link post for.
  • description - a string, the desciption of the link that you have
#Create a link post
client.create_link(blogName, title="I like to search things, you should too.", url="https://duckduckgo.com",
                   description="Search is pretty cool when a duck does it.")

Creating a chat post

Creating a chat post supports the same options as default and two other parameters * title - a string, the title of the chat post * conversation - a string, the text of the conversation/chat, with diablog labels (no html)

#Create a chat post
chat = """John: Testing can be fun!
Renee: Testing is tedious and so are you.
John: Aw.
"""
client.create_chat(blogName, title="Renee just doesn't understand.", conversation=chat, tags=["renee", "testing"])

Creating an audio post

Creating an audio post allows for all default options and a has 3 other parameters. The only thing to keep in mind while dealing with audio posts is to make sure that you use the external_url parameter or data. You cannot use both at the same time. * caption - a string, the caption for your post * external_url - a string, the url of the site that hosts the audio file * data - a string, the filepath of the audio file you want to upload to Tumblr

#Creating an audio file
client.create_audio(blogName, caption="Rock out.", data="/Users/johnb/Music/my/new/sweet/album.mp3")

#lets use soundcloud!
client.create_audio(blogName, caption="Mega rock out.", external_url="https://soundcloud.com/skrillex/sets/recess")

Creating a video post

Creating a video post allows for all default options and has three other options. Like the other post types, it has some restrictions. You cannot use the embed and data parameters at the same time. * caption - a string, the caption for your post * embed - a string, the HTML embed code for the video * data - a string, the path of the file you want to upload

#Creating an upload from YouTube
client.create_video(blogName, caption="Jon Snow. Mega ridiculous sword.",
                    embed="http://www.youtube.com/watch?v=40pUYLacrj4")

#Creating a video post from local file
client.create_video(blogName, caption="testing", data="/Users/johnb/testing/ok/blah.mov")

Editing a post

Updating a post requires you knowing what type a post you're updating. You'll be able to supply to the post any of the options given above for updates.

client.edit_post(blogName, id=post_id, type="text", title="Updated")
client.edit_post(blogName, id=post_id, type="photo", data="/Users/johnb/mega/awesome.jpg")

Reblogging a Post

Reblogging a post just requires knowing the post id and the reblog key, which is supplied in the JSON of any post object.

client.reblog(blogName, id=125356, reblog_key="reblog_key")

Deleting a post

Deleting just requires that you own the post and have the post id

client.delete_post(blogName, 123456) # Deletes your post :(

A note on tags: When passing tags, as params, please pass them as a list (not a comma-separated string):

client.create_text(blogName, tags=['hello', 'world'], ...)

Getting notes for a post

In order to get the notes for a post, you need to have the post id and the blog that it is on.

data = client.notes(blogName, id='123456')

The results include a timestamp you can use to make future calls.

data = client.notes(blogName, id='123456', before_timestamp=data["_links"]["next"]["query_params"]["before_timestamp"])

Tagged Methods

# get posts with a given tag
client.tagged(tag, **params)

Using the interactive console

This client comes with a nice interactive console to run you through the OAuth process, grab your tokens (and store them for future use).

You'll need pyyaml installed to run it, but then it's just:

$ python interactive-console.py

and away you go! Tokens are stored in ~/.tumblr and are also shared by other Tumblr API clients like the Ruby client.

Running tests

The tests (and coverage reports) are run with nose, like this:

python setup.py test

Author: tumblr
Source Code: https://github.com/tumblr/pytumblr
License: Apache-2.0 license

#python #api 

Create a Serverless Python API with AWS Amplify and Flask

In this tutorial, we will create a Flask API using the super fun Python programming language – the theme of the app will be to list Britney Spears songs! We’ll deploy using AWS Amplify’s command line where we’ll generate an AWS Lambda function. We’ll also use an Amazon DynamoDB database to store our data and implement routes for all CRUD functionality.

👩🏼‍💻 Links Mentioned 👩🏼‍💻

Flask - https://flask.palletsprojects.com/en/1.1.x/
AWS Amplify Documentation - https://docs.amplify.aws/
Full Code - https://github.com/aspittel/britney-api

#aws #serverless #api #python #flask

Ray  Patel

Ray Patel

1619510796

Lambda, Map, Filter functions in python

Welcome to my Blog, In this article, we will learn python lambda function, Map function, and filter function.

Lambda function in python: Lambda is a one line anonymous function and lambda takes any number of arguments but can only have one expression and python lambda syntax is

Syntax: x = lambda arguments : expression

Now i will show you some python lambda function examples:

#python #anonymous function python #filter function in python #lambda #lambda python 3 #map python #python filter #python filter lambda #python lambda #python lambda examples #python map

Creating REST API with Python and Flask: Web development with Python and flask part 6

Creating REST API with Python and Flask: Web development with Python and flask part 6

Leave a Comment / FlaskPythonWeb Developemnt / By winston23 / May 7, 2021 / APIflaskREST API

Views: 265

An API, which stands for Application Programming Interface, is just what its name suggests it is. It’s an Interface for other application programs. Meaning it helps connect different programs and machines to access and share data. An interface is just a medium facilitating the access of certain functionality or an intermediary between two systems. In the post about REST here, we gave an example of connecting to a Facebook graph API to access Facebook user information to log in a user to a third-party application.

Get the code for this blog post from my github repository

REST ,an acronym for Representational State Transfer, is just a style guide for creating these APIs.We have a complete and indepth post here discussing what REST is, read it to have a clear understanding about that topic(REST) before continuing.

In this tutorial we will be looking at how we can create our own REST API in Python using flask micro-framework.

Table of Content

  • A brief introduction to flask and its installation
  • Why flask?
  • Creating and connecting to sqlite3 database
  • Creating our API endpoints
  • Creating the **CRUD **operations functionality for our API
  • Testing our endpoint with postman
  • Conclusion

#flask #python #web developemnt #api #flask #rest api

Ryan  Schneider

Ryan Schneider

1595418900

Serverless Express – Easy APIs On AWS Lambda & AWS HTTP API

TLDR - Take existing Express.js apps and host them easily onto cheap, auto-scaling, serverless infrastructure on AWS Lambda and AWS HTTP API with Serverless Express. It’s packed loads of production-ready features, like custom domains, SSL certificates, canary deployments, and costs ~$0.000003 per request.

If you simply want to host a common Express.js Node.js application, have it auto-scale to billions of requests, and charge you only when it’s used, we have something special for you…

Announcing Serverless Express, a Serverless Framework offering enabling you to easily host and manage Express.js applications on AWS Lambda and the new AWS HTTP API, which is 60% faster and 71% cheaper than their initial API Gateway product.

Serverless Expess is a pure Express.js experience and it’s perfect for those that want to focus on apps, not infrastructure complexity.

Here are the highlights:

  • Easy, Safe, Performance - Includes the optimal infrastructure pattern for cost, performance & scale.
  • Never Pay For Idle - No API requests? No cost. Averages ~$0.000003 per request.
  • Zero Configuration - Add your Express app, then deploy (advanced config options are available).
  • Fast Deployments - Deploy changes to the cloud in seconds.
  • Real-time Logging - Rapidly develop on the cloud w/ real-time logs and errors in the CLI.
  • Canary Deployments - Deploy your app gradually to a subset of your traffic.
  • Custom Domain + SSL - Auto-configure a custom domain w/ a free AWS ACM SSL certificate.
  • Team Collaboration - Collaborate with your teamates with shared state and outputs.

Here is how to get started and deliver a Serverless Express.js based API with a custom domain, free SSL certificate and much more! You can also check out our Serverless Fullstack Application boilerplate, which includes Serverless Express in a real-world example that features a database, website using React and more.

Set-Up

Serverless Express is a Serverless Framework Component (i.e premium experiences for popular serverless use-cases) and you’ll need to install Node.js and the Serverless Framework CLI to use it.

Install Node.js here.

Then run this command to install Serverless Framework.

npm i -g serverless

Next, install the Serverless Express template:

serverless create --template-url https://github.com/serverless/components/tree/master/templates/express

Lastly, Serverless Express deploys onto your own Amazon Web Services account, so you’ll need Access Keys to an AWS account you own. Follow this guide to create those.

After you have created AWS Access Keys you can add them directly to an .env file, or reference an AWS Profile in a .env file, within the root of the template you installed.

AWS_ACCESS_KEY_ID=123456789
AWS_SECRET_ACCESS_KEY=123456789

You can also reference an AWS Profile in a .env file like this.

AWS_PROFILE=default

If you don’t include a .env file, the Serverless Framework will automatically look for a default AWS Profile in the root folder of your machine.

Also, Serverless Framework has a built-in stages concept. If you change the stage it will deploy a totally separate copy of your serverless application.

# serverless.yml
component: express@1.0.8
  name: express-api
  stage: prod

Even better, you can use different .env files for each stage by simply using this convention:

.env # all stages
.env.dev # "dev" stage
.env.prod # "prod" stage

One last—often overlooked—step is to install the Express.js dependency, by running npm i in the template.

#serverless #apis #aws #aws lambda #aws http api