FastAPI

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FastAPI

  • Very fast (built on ASGI unlike flask which is built on WSGI)

  • in built with swagger UI documentation and ReDoc Documentation

  • supports pydantic for data validation

  • Totally Based upon open API (Linux foundation, defines how to create an API) and json schema

  • Starlette features

  • Supports - SQL, NoSQL, graphQL

ASGI vs WSGI

Swagger and ReDOC Documentation

Pydantic

Streamlit Features

Supports Multiple Databases

Additional Support

  • works with gunicorn

  • jwt authentication

Requirements

  • Python version should be 3.6+

  • pip install fastapi[all]

  • pip install gunicorn

  • pip install uvicorn[standard]

  • from pydantic import BaseModel

uvicorn -b 0.0.0.0:5020 main:app --reload

# main is the main.py file
# app = FastAPI() instance
# -b binds to particular host and port
# --reload automatically refreshes as soon as we make changes to main.py and save

  • FastAPI reads the file line-by-line so if there is any error at the start, we don't reach to the lower part of the file

Reference for Further Reading

PreviousFlaskNextTornado

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