GraphQL with Python: Build Flexible APIs Using Strawberry

REST is great, but sometimes clients need more flexibility. GraphQL lets clients request exactly the data they need. Here's how to build a GraphQL API in Python. Why GraphQL? No over-fetching: client gets only requested fields No under-fetching: get related data in one request Strongly typed schema serves as documentation Great for mobile apps and complex frontends Setup with Strawberry pip install strawberry-graphql[fastapi] Basic Schema import strawberry from strawberry.fastapi import GraphQLRouter from fastapi import FastAPI @strawberry.type class User : id : int name : str email : str @strawberry.type class Post : id : int title : str content : str author : User # Sample data users_db = [ { " id " : 1 , " name " : " Alice " , " email " : " alice@example.com " }, { " id " : 2 , " name " : " Bob " , " email " : " bob@example.com " }, ] posts_db = [ { " id " : 1 , " title " : " Hello GraphQL " , " content " : " GraphQL is awesome " , " author_id " : 1 }, { " id " : 2 , " title " : " P