FastAPI: A Modern, High Performance, Web Framework

FastAPI framework, high performance, easy to learn, fast to code, ready for production


Documentation: https://fastapi.tiangolo.com

Source Code: https://github.com/tiangolo/fastapi


FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

The key features are:

Fast: Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available.

Fast to code: Increase the speed to develop features by about 200% to 300%. *

Fewer bugs: Reduce about 40% of human (developer) induced errors. *

Intuitive: Great editor support. Completion everywhere. Less time debugging.

Easy: Designed to be easy to use and learn. Less time reading docs.

Short: Minimize code duplication. Multiple features from each parameter declaration. Fewer bugs.

Robust: Get production-ready code. With automatic interactive documentation.

Standards-based: Based on (and fully compatible with) the open standards for APIs: OpenAPI (previously known as Swagger) and JSON Schema.

* estimation based on tests on an internal development team, building production applications.

Sponsors

Other sponsors

Opinions

"[...] I'm using FastAPI a ton these days. [...] I'm actually planning to use it for all of my team's ML services at Microsoft. Some of them are getting integrated into the core Windows product and some Office products."

Kabir Khan - Microsoft (ref)


"We adopted the FastAPI library to spawn a REST server that can be queried to obtain predictions. [for Ludwig]"

Piero Molino, Yaroslav Dudin, and Sai Sumanth Miryala - Uber (ref)


"Netflix is pleased to announce the open-source release of our crisis management orchestration framework: Dispatch! [built with FastAPI]"

Kevin Glisson, Marc Vilanova, Forest Monsen - Netflix (ref)


"I’m over the moon excited about FastAPI. It’s so fun!"

Brian Okken - Python Bytes podcast host (ref)


"Honestly, what you've built looks super solid and polished. In many ways, it's what I wanted Hug to be - it's really inspiring to see someone build that."

Timothy Crosley - Hug creator (ref)


"If you're looking to learn one modern framework for building REST APIs, check out FastAPI [...] It's fast, easy to use and easy to learn [...]"

"We've switched over to FastAPI for our APIs [...] I think you'll like it [...]"

Ines Montani - Matthew Honnibal - Explosion AI founders - spaCy creators (ref) - (ref)


Typer, the FastAPI of CLIs

If you are building a CLI app to be used in the terminal instead of a web API, check out Typer.

Typer is FastAPI's little sibling. And it's intended to be the FastAPI of CLIs. ⌨️ 🚀

Requirements

Python 3.6+

FastAPI stands on the shoulders of giants:

Installation

$ pip install fastapi

---> 100%

You will also need an ASGI server, for production such as Uvicorn or Hypercorn.

$ pip install "uvicorn[standard]"

---> 100%

Example

Create it

  • Create a file main.py with:
from typing import Optional

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}

Or use async def...

If your code uses async / await, use async def:

from typing import Optional

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}

Note:

If you don't know, check the "In a hurry?" section about async and await in the docs.

Run it

Run the server with:

$ uvicorn main:app --reload

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [28720]
INFO:     Started server process [28722]
INFO:     Waiting for application startup.
INFO:     Application startup complete.

About the command uvicorn main:app --reload...

The command uvicorn main:app refers to:

  • main: the file main.py (the Python "module").
  • app: the object created inside of main.py with the line app = FastAPI().
  • --reload: make the server restart after code changes. Only do this for development.

Check it

Open your browser at http://127.0.0.1:8000/items/5?q=somequery.

You will see the JSON response as:

{"item_id": 5, "q": "somequery"}

You already created an API that:

  • Receives HTTP requests in the paths / and /items/{item_id}.
  • Both paths take GET operations (also known as HTTP methods).
  • The path /items/{item_id} has a path parameter item_id that should be an int.
  • The path /items/{item_id} has an optional str query parameter q.

Interactive API docs

Now go to http://127.0.0.1:8000/docs.

You will see the automatic interactive API documentation (provided by Swagger UI):

Swagger UI

Alternative API docs

And now, go to http://127.0.0.1:8000/redoc.

You will see the alternative automatic documentation (provided by ReDoc):

ReDoc

Example upgrade

Now modify the file main.py to receive a body from a PUT request.

Declare the body using standard Python types, thanks to Pydantic.

from typing import Optional

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Optional[bool] = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}

The server should reload automatically (because you added --reload to the uvicorn command above).

Interactive API docs upgrade

Now go to http://127.0.0.1:8000/docs.

  • The interactive API documentation will be automatically updated, including the new body:

Swagger UI

  • Click on the button "Try it out", it allows you to fill the parameters and directly interact with the API:

Swagger UI interaction

  • Then click on the "Execute" button, the user interface will communicate with your API, send the parameters, get the results and show them on the screen:

Swagger UI interaction

Alternative API docs upgrade

And now, go to http://127.0.0.1:8000/redoc.

  • The alternative documentation will also reflect the new query parameter and body:

ReDoc

Recap

In summary, you declare once the types of parameters, body, etc. as function parameters.

You do that with standard modern Python types.

You don't have to learn a new syntax, the methods or classes of a specific library, etc.

Just standard Python 3.6+.

For example, for an int:

item_id: int

or for a more complex Item model:

item: Item

...and with that single declaration you get:

  • Editor support, including:
    • Completion.
    • Type checks.
  • Validation of data:
    • Automatic and clear errors when the data is invalid.
    • Validation even for deeply nested JSON objects.
  • Conversion of input data: coming from the network to Python data and types. Reading from:
    • JSON.
    • Path parameters.
    • Query parameters.
    • Cookies.
    • Headers.
    • Forms.
    • Files.
  • Conversion of output data: converting from Python data and types to network data (as JSON):
    • Convert Python types (str, int, float, bool, list, etc).
    • datetime objects.
    • UUID objects.
    • Database models.
    • ...and many more.
  • Automatic interactive API documentation, including 2 alternative user interfaces:
    • Swagger UI.
    • ReDoc.

Coming back to the previous code example, FastAPI will:

  • Validate that there is an item_id in the path for GET and PUT requests.
  • Validate that the item_id is of type int for GET and PUT requests.
    • If it is not, the client will see a useful, clear error.
  • Check if there is an optional query parameter named q (as in http://127.0.0.1:8000/items/foo?q=somequery) for GET requests.
    • As the q parameter is declared with = None, it is optional.
    • Without the None it would be required (as is the body in the case with PUT).
  • For PUT requests to /items/{item_id}, Read the body as JSON:
    • Check that it has a required attribute name that should be a str.
    • Check that it has a required attribute price that has to be a float.
    • Check that it has an optional attribute is_offer, that should be a bool, if present.
    • All this would also work for deeply nested JSON objects.
  • Convert from and to JSON automatically.
  • Document everything with OpenAPI, that can be used by:
    • Interactive documentation systems.
    • Automatic client code generation systems, for many languages.
  • Provide 2 interactive documentation web interfaces directly.

We just scratched the surface, but you already get the idea of how it all works.

Try changing the line with:

    return {"item_name": item.name, "item_id": item_id}

...from:

        ... "item_name": item.name ...

...to:

        ... "item_price": item.price ...

...and see how your editor will auto-complete the attributes and know their types:

editor support

For a more complete example including more features, see the Tutorial - User Guide.

Spoiler alert: the tutorial - user guide includes:

  • Declaration of parameters from other different places as: headers, cookies, form fields and files.
  • How to set validation constraints as maximum_length or regex.
  • A very powerful and easy to use Dependency Injection system.
  • Security and authentication, including support for OAuth2 with JWT tokens and HTTP Basic auth.
  • More advanced (but equally easy) techniques for declaring deeply nested JSON models (thanks to Pydantic).
  • GraphQL integration with Strawberry and other libraries.
  • Many extra features (thanks to Starlette) as:
    • WebSockets
    • extremely easy tests based on requests and pytest
    • CORS
    • Cookie Sessions
    • ...and more.

Performance

Independent TechEmpower benchmarks show FastAPI applications running under Uvicorn as one of the fastest Python frameworks available, only below Starlette and Uvicorn themselves (used internally by FastAPI). (*)

To understand more about it, see the section Benchmarks.

Optional Dependencies

Used by Pydantic:

Used by Starlette:

  • requests - Required if you want to use the TestClient.
  • jinja2 - Required if you want to use the default template configuration.
  • python-multipart - Required if you want to support form "parsing", with request.form().
  • itsdangerous - Required for SessionMiddleware support.
  • pyyaml - Required for Starlette's SchemaGenerator support (you probably don't need it with FastAPI).
  • ujson - Required if you want to use UJSONResponse.

Used by FastAPI / Starlette:

  • uvicorn - for the server that loads and serves your application.
  • orjson - Required if you want to use ORJSONResponse.

You can install all of these with pip install "fastapi[all]".

License

This project is licensed under the terms of the MIT license.

Author: tiangolo
Source Code: https://github.com/tiangolo/fastapi
License: MIT License

#python #fastapi 

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FastAPI: A Modern, High Performance, Web Framework

Ajay Kapoor

1619172468

10 Top Web Development Frameworks for Assured Success of Your Project - PixelCrayons

Web development frameworks are a powerful answer for businesses to accomplish a unique web app as they play a vital role in providing tools and libraries for developers to use.

Most businesses strive to seek offbeat web applications that can perform better and enhance traffic to the site. Plus, it is imperative to have such apps as the competition is very high in the digital world.

Developers find it sophisticated to use the libraries and templates provided by frameworks to make interactive and user-friendly web applications. Moreover, frameworks assist them in increasing the efficiency, performance, and productivity of the web development task.

Before getting deep into it, let’s have a quick glance at the below facts and figures below that will help you comprehend the utility of the frameworks.

As per Statista, 35.9% of developers used React in 2020.
25.1% of developers used the Angular framework worldwide.
According to SimilarTech, 2,935 websites use the Spring framework, most popular among the News and Media domain.

What is a Framework?
A framework is a set of tools that paves the way for web developers to create rich and interactive web apps. It comprises libraries, templates, and specific software tools. Additionally, it enables them to develop a hassle-free application by not rewriting the same code to build the application.

There are two categories of frameworks: the back-end framework, known as the server-side, and the front-end framework, known as the client-side.

The backend framework refers to a web page portion that you can not see, and it communicates with the front end one. On the other hand, the front-end is a part of the web that users can see and experience.

You can understand by an example that what you see on the app is the front-end part, and the communication you make with it is the part of the back end.

Read the full blog here

Hence, depending on your web development application requirements, you can hire web developers from India’s best web development company. In no time, you will be amongst those who are reaping the results of using web development frameworks for the applications.

#web-development-frameworks #web-frameworks #top-web-frameworks #best-web-development-frameworks

Any Alpha

Any Alpha

1613122689

Top 3 Golang Web Frameworks In 2021

Golang is one of the most powerful and famous tools used to write APIs and web frameworks. Google’s ‘Go’ otherwise known as Golan orders speedy running local code. It is amazing to run a few programming advancements rethinking specialists and software engineers from various sections. We can undoubtedly say that this is on the grounds that the engineers have thought that it was easiest to utilize Go. It is always considered as ago for web and mobile app development because it is ranked highest among all the web programming languages.

Top 3 Golang web frameworks in 2021:

1.Martini: Martini is said to be a low-profile framework as it’s a small community but also known for its various unique things like injecting various data sets or working on handlers of different types. It is very active and there are some twenty and above plug-ins which could also be the reason for the need for add-ons. It deals with some principles of techniques like routing, dealing, etc, basic common tricks to do middleware.

2.Buffalo: Buffalo is known for its fast application development services. It is a complete process of starting any project from scratch and providing end to end facility for back-end web building. Buffalo comes with the dev command which helps directly to experience transformations in front of you and redevelop your whole binary. It is rather an ecosystem used to create the best app development.

3.Gorilla: Gorilla is the largest and longest-running Go web framework. It can be little and maximum for any user. It is also the biggest English-speaking community that comes with robust web sockets features so you can attach the REST codes to the endpoints giving a third-party service like Pusher.

So, these are some web frameworks that can be used for Golang language. Each framework has its unique points which are only found in them but all of them are the best. IF your developer is in search of one this is where you can find the best.

#top 3 golang web frameworks in 2021 #golang #framework #web-service #web #web-development

Top 15 Free JavaScript Frameworks for Web Applications

List of some useful JavaScript Frameworks and libraries for website, web apps, and mobile apps development, that developers should know about to make selection easier.
This article will help you understand the various types of JavaScript Framework available in the market. When it comes to choosing the best platform for you, it’s not only the number of features you need to consider but also its functionality. The ease with which it fits within your project is also an essential factor. The next step is to choose the framework that best fits your company requirements or you can select the best from the list of top web development companies to develop your product based on your requirements.

#javascript frameworks for web applications #web applications development companies #progressive javascript framework #javascript frameworks #javascript #frameworks

Evolution in Web Design: A Case Study of 25 Years - Prismetric

The term web design simply encompasses a design process related to the front-end design of website that includes writing mark-up. Creative web design has a considerable impact on your perceived business credibility and quality. It taps onto the broader scopes of web development services.

Web designing is identified as a critical factor for the success of websites and eCommerce. The internet has completely changed the way businesses and brands operate. Web design and web development go hand-in-hand and the need for a professional web design and development company, offering a blend of creative designs and user-centric elements at an affordable rate, is growing at a significant rate.

In this blog, we have focused on the different areas of designing a website that covers all the trends, tools, and techniques coming up with time.

Web design
In 2020 itself, the number of smartphone users across the globe stands at 6.95 billion, with experts suggesting a high rise of 17.75 billion by 2024. On the other hand, the percentage of Gen Z web and internet users worldwide is up to 98%. This is not just a huge market but a ginormous one to boost your business and grow your presence online.

Web Design History
At a huge particle physics laboratory, CERN in Switzerland, the son of computer scientist Barner Lee published the first-ever website on August 6, 1991. He is not only the first web designer but also the creator of HTML (HyperText Markup Language). The worldwide web persisted and after two years, the world’s first search engine was born. This was just the beginning.

Evolution of Web Design over the years
With the release of the Internet web browser and Windows 95 in 1995, most trading companies at that time saw innumerable possibilities of instant worldwide information and public sharing of websites to increase their sales. This led to the prospect of eCommerce and worldwide group communications.

The next few years saw a soaring launch of the now-so-famous websites such as Yahoo, Amazon, eBay, Google, and substantially more. In 2004, by the time Facebook was launched, there were more than 50 million websites online.

Then came the era of Google, the ruler of all search engines introducing us to search engine optimization (SEO) and businesses sought their ways to improve their ranks. The world turned more towards mobile web experiences and responsive mobile-friendly web designs became requisite.

Let’s take a deep look at the evolution of illustrious brands to have a profound understanding of web design.

Here is a retrospection of a few widely acclaimed brands over the years.

Netflix
From a simple idea of renting DVDs online to a multi-billion-dollar business, saying that Netflix has come a long way is an understatement. A company that has sent shockwaves across Hollywood in the form of content delivery. Abundantly, Netflix (NFLX) is responsible for the rise in streaming services across 190 countries and meaningful changes in the entertainment industry.

1997-2000

The idea of Netflix was born when Reed Hastings and Marc Randolph decided to rent DVDs by mail. With 925 titles and a pay-per-rental model, Netflix.com debuts the first DVD rental and sales site with all novel features. It offered unlimited rentals without due dates or monthly rental limitations with a personalized movie recommendation system.

Netflix 1997-2000

2001-2005

Announcing its initial public offering (IPO) under the NASDAQ ticker NFLX, Netflix reached over 1 million subscribers in the United States by introducing a profile feature in their influential website design along with a free trial allowing members to create lists and rate their favorite movies. The user experience was quite engaging with the categorization of content, recommendations based on history, search engine, and a queue of movies to watch.

Netflix 2001-2005 -2003

2006-2010

They then unleashed streaming and partnering with electronic brands such as blu-ray, Xbox, and set-top boxes so that users can watch series and films straight away. Later in 2010, they also launched their sophisticated website on mobile devices with its iconic red and black themed background.

Netflix 2006-2010 -2007

2011-2015

In 2013, an eye-tracking test revealed that the users didn’t focus on the details of the movie or show in the existing interface and were perplexed with the flow of information. Hence, the professional web designers simply shifted the text from the right side to the top of the screen. With Daredevil, an audio description feature was also launched for the visually impaired ones.

Netflix 2011-2015

2016-2020

These years, Netflix came with a plethora of new features for their modern website design such as AutoPay, snippets of trailers, recommendations categorized by genre, percentage based on user experience, upcoming shows, top 10 lists, etc. These web application features yielded better results in visual hierarchy and flow of information across the website.

Netflix 2016-2020

2021

With a sleek logo in their iconic red N, timeless black background with a ‘Watch anywhere, Cancel anytime’ the color, the combination, the statement, and the leading ott platform for top video streaming service Netflix has overgrown into a revolutionary lifestyle of Netflix and Chill.

Netflix 2021

Contunue to read: Evolution in Web Design: A Case Study of 25 Years

#web #web-design #web-design-development #web-design-case-study #web-design-history #web-development

Top 10 Web Application Frameworks

From a wide variety of Web Application Development Frameworks, it is eternally tough to pick the one framework that is completely satisfied with the project. Here, Top 10 Web Application Frameworks Describe in detail.

#web application frameworks #top web application frameworks #server-side web frameworks