GraphQL Framework for Python
Project description
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Graphene
Introduction
Graphene is a Python library for building GraphQL schemas/types fast and easily.
Easy to use: Graphene helps you use GraphQL in Python without effort.
Relay: Graphene has builtin support for Relay.
Data agnostic: Graphene supports any kind of data source: SQL (Django, SQLAlchemy), NoSQL, custom Python objects, etc. We believe that by providing a complete API you could plug Graphene anywhere your data lives and make your data available through GraphQL.
Integrations
Graphene has multiple integrations with different frameworks:
integration |
Package |
---|---|
Django |
|
SQLAlchemy |
|
Google App Engine |
|
Peewee |
In progress (Tracking Issue) |
Also, Graphene is fully compatible with the GraphQL spec, working seamlessly with all GraphQL clients, such as Relay, Apollo and gql.
Installation
For instaling graphene, just run this command in your shell
pip install "graphene>=2.0"
2.0 Upgrade Guide
Please read UPGRADE-v2.0.md to learn how to upgrade.
Examples
Here is one example for you to get started:
import graphene
class Query(graphene.ObjectType):
hello = graphene.String(description='A typical hello world')
def resolve_hello(self, info):
return 'World'
schema = graphene.Schema(query=Query)
Then Querying graphene.Schema is as simple as:
query = '''
query SayHello {
hello
}
'''
result = schema.execute(query)
If you want to learn even more, you can also check the following examples:
Basic Schema: Starwars example
Relay Schema: Starwars Relay example
Documentation
Documentation and links to additional resources are available at https://docs.graphene-python.org/en/latest/
Contributing
After cloning this repo, create a virtualenv and ensure dependencies are installed by running:
virtualenv venv
source venv/bin/activate
pip install -e ".[test]"
Well-written tests and maintaining good test coverage is important to this project. While developing, run new and existing tests with:
py.test graphene/relay/tests/test_node.py # Single file
py.test graphene/relay # All tests in directory
Add the -s flag if you have introduced breakpoints into the code for debugging. Add the -v (“verbose”) flag to get more detailed test output. For even more detailed output, use -vv. Check out the pytest documentation for more options and test running controls.
You can also run the benchmarks with:
py.test graphene --benchmark-only
Graphene supports several versions of Python. To make sure that changes do not break compatibility with any of those versions, we use tox to create virtualenvs for each Python version and run tests with that version. To run against all Python versions defined in the tox.ini config file, just run:
tox
If you wish to run against a specific version defined in the tox.ini file:
tox -e py36
Tox can only use whatever versions of Python are installed on your system. When you create a pull request, Travis will also be running the same tests and report the results, so there is no need for potential contributors to try to install every single version of Python on their own system ahead of time. We appreciate opening issues and pull requests to make graphene even more stable & useful!
Building Documentation
The documentation is generated using the excellent Sphinx and a custom theme.
An HTML version of the documentation is produced by running:
make docs
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