FASTAPI

• Framework: FastAPI
• Description: FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
• Features:
  • 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.
• Installation: pip install fastapi[all]
• Documentation: https://fastapi.tiangolo.com/
• Example:

  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: str = None):
      return {"item_id": item_id, "q": q}

• Running the app: Use uvicorn to run the application.

  uvicorn main:app --reload

• Interactive API docs: Once the app is running, you can access the interactive API documentation at http:// localhost:8000/docs or http://localhost:8000/redoc.
• License: MIT License

ANALOGY

Customer <->  waiter <-> chef
Client   <->  server <->  application
Browser  <->  FastAPI <->  Python

RESOURCES

• FastAPI GitHub Repository

Need for APIs

• APIs (Application Programming Interfaces) are essential for enabling communication between different software systems.
• They allow developers to access functionalities and data from other applications, services, or platforms without needing to understand their internal workings.

DATABASE <-> Backend <-> API <-> Frontend <-> USER