<style> .reveal { font-size: 24pt; width: 100% } .reveal .slides { width: 90% !important; } .reveal blockquote { font-size: 24pt; } .reveal h1 { text-shadow: none } pre code .wrapper { font-size: 20pt; line-height: 1.5em; } .reveal pre { width: 860px } </style> # FastAPI 簡介 簡伯銓 (dibery) 110.5.3 --- ## What is FastAPI? > FastAPI is a **software framework** for developing **web applications** in Python. > Initial release: December 08, 2018 > [name=Wikipedia] [color=orange] ---- ## What is FastAPI? > FastAPI is a **modern, fast (high-performance), web framework for building APIs with Python** 3.6+ based on standard Python type hints. > [name=FastAPI official site] [color=red] > > ... **FastAPI** ... as [one of the fastest Python frameworks](https://www.techempower.com/benchmarks/#section=test&runid=7464e520-0dc2-473d-bd34-dbdfd7e85911&hw=ph&test=query&l=zijzen-7)..., only below Starlette and Uvicorn ... (used internally by FastAPI). > [name=FastAPI performance test] [color=blue] Some popular sites like Uber & Netflix use it. --- ## FastAPI is very similar to Flask! - With `asyc` ability - With type check - With auto doc generation - Without front-end features & server - Making it really an **API** $\Rightarrow$ FastAPI $\approx$ Flask $-$ front-end $-$ server $+$ type check $+$ async call $+$ doc gen --- ## How to install? Using `pip`: ```bash= pip install fastapi uvicorn ``` `uvicron` is a python web server that supports asyncronous calls. --- ## A quick example ```python= import uvicorn from fastapi import FastAPI app = FastAPI() @app.get("/") def home(name: str): return {"message": f"Hello! {name}"} if __name__ == "__main__": uvicorn.run(app, host='127.0.0.1', port=8000) ``` ---- ## View the result Open `localhost/?name=AnyNameHere` in browser  --- ## The doc The API doc can be viewed at `localhost/docs`  ---- ## The doc or `localhost/redocs`  --- ## END