Ariadne is a Python library for implementing GraphQL servers using a schema-first approach. It emphasizes a simple, extensible API for defining GraphQL schemas using Schema Definition Language (SDL) and connecting business logic with minimal boilerplate. It supports queries, mutations, subscriptions, custom scalars, and integrates with ASGI/WSGI frameworks like Django, FastAPI, Flask, and Starlette. The project maintains an active and frequent release cadence, with regular patch, minor, and occasional alpha releases, as seen with versions like 1.0.1 and subsequent 1.1.0a2.
pip install ariadne uvicornVerified import paths — ran on the pinned version, not inferred.
This quickstart sets up a basic Ariadne GraphQL server with a 'Person' type and a 'people' query. It defines the schema in SDL, creates a resolver for the 'people' field, and runs a development server with GraphiQL for interactive API exploration.
Consult the official migration guide (linked in GitHub release notes for 1.0.0) to update your codebase. Replace removed functionalities with their modern equivalents or adjust naming conventions.
Migrate from `FallbackResolvers` to standard resolver patterns. If you relied on `convert_kwargs_to_snake_case` for automatic argument case conversion, you will need to implement this conversion manually in your resolvers or use other utility functions if available in newer versions.
For user-facing errors, define custom fields within your GraphQL types (e.g., `type Mutation { login(data: LoginInput): LoginPayload } type LoginPayload { user: User error: String }`) to return specific error messages as part of the data payload.