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175 lines
6.0 KiB
ReStructuredText
**We are looking for contributors**! Please check the
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`ROADMAP <https://github.com/graphql-python/graphene/blob/master/ROADMAP.md>`__
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to see how you can help ❤️
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--------------
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|Graphene Logo| `Graphene <http://graphene-python.org>`__ |Build Status| |PyPI version| |Coverage Status|
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=========================================================================================================
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`Graphene <http://graphene-python.org>`__ is a Python library for
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building GraphQL schemas/types fast and easily.
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- **Easy to use:** Graphene helps you use GraphQL in Python without
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effort.
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- **Relay:** Graphene has builtin support for Relay.
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- **Data agnostic:** Graphene supports any kind of data source: SQL
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(Django, SQLAlchemy), NoSQL, custom Python objects, etc. We believe
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that by providing a complete API you could plug Graphene anywhere
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your data lives and make your data available through GraphQL.
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Integrations
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------------
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Graphene has multiple integrations with different frameworks:
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+---------------------+----------------------------------------------------------------------------------------------+
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| integration | Package |
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+=====================+==============================================================================================+
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| Django | `graphene-django <https://github.com/graphql-python/graphene-django/>`__ |
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+---------------------+----------------------------------------------------------------------------------------------+
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| SQLAlchemy | `graphene-sqlalchemy <https://github.com/graphql-python/graphene-sqlalchemy/>`__ |
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+---------------------+----------------------------------------------------------------------------------------------+
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| Google App Engine | `graphene-gae <https://github.com/graphql-python/graphene-gae/>`__ |
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+---------------------+----------------------------------------------------------------------------------------------+
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| Peewee | *In progress* (`Tracking Issue <https://github.com/graphql-python/graphene/issues/289>`__) |
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+---------------------+----------------------------------------------------------------------------------------------+
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Also, Graphene is fully compatible with the GraphQL spec, working
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seamlessly with all GraphQL clients, such as
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`Relay <https://github.com/facebook/relay>`__,
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`Apollo <https://github.com/apollographql/apollo-client>`__ and
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`gql <https://github.com/graphql-python/gql>`__.
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Installation
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------------
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For instaling graphene, just run this command in your shell
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.. code:: bash
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pip install "graphene>=2.0"
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2.0 Upgrade Guide
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-----------------
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Please read `UPGRADE-v2.0.md </UPGRADE-v2.0.md>`__ to learn how to
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upgrade.
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Examples
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--------
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Here is one example for you to get started:
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.. code:: python
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class Query(graphene.ObjectType):
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hello = graphene.String(description='A typical hello world')
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def resolve_hello(self, info):
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return 'World'
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schema = graphene.Schema(query=Query)
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Then Querying ``graphene.Schema`` is as simple as:
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.. code:: python
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query = '''
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query SayHello {
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hello
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}
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'''
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result = schema.execute(query)
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If you want to learn even more, you can also check the following
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`examples <examples/>`__:
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- **Basic Schema**: `Starwars example <examples/starwars>`__
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- **Relay Schema**: `Starwars Relay
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example <examples/starwars_relay>`__
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Contributing
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------------
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After cloning this repo, create a
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`virtualenv <https://virtualenv.pypa.io/en/stable/>`__ and ensure
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dependencies are installed by running:
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.. code:: sh
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virtualenv venv
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source venv/bin/activate
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pip install -e ".[test]"
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Well-written tests and maintaining good test coverage is important to
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this project. While developing, run new and existing tests with:
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.. code:: sh
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py.test graphene/relay/tests/test_node.py # Single file
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py.test graphene/relay # All tests in directory
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Add the ``-s`` flag if you have introduced breakpoints into the code for
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debugging. Add the ``-v`` ("verbose") flag to get more detailed test
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output. For even more detailed output, use ``-vv``. Check out the
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`pytest documentation <https://docs.pytest.org/en/latest/>`__ for more
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options and test running controls.
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You can also run the benchmarks with:
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.. code:: sh
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py.test graphene --benchmark-only
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Graphene supports several versions of Python. To make sure that changes
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do not break compatibility with any of those versions, we use ``tox`` to
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create virtualenvs for each python version and run tests with that
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version. To run against all python versions defined in the ``tox.ini``
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config file, just run:
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.. code:: sh
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tox
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If you wish to run against a specific version defined in the ``tox.ini``
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file:
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.. code:: sh
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tox -e py36
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Tox can only use whatever versions of python are installed on your
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system. When you create a pull request, Travis will also be running the
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same tests and report the results, so there is no need for potential
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contributors to try to install every single version of python on their
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own system ahead of time. We appreciate opening issues and pull requests
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to make graphene even more stable & useful!
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Documentation
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~~~~~~~~~~~~~
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The documentation is generated using the excellent
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`Sphinx <http://www.sphinx-doc.org/>`__ and a custom theme.
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The documentation dependencies are installed by running:
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.. code:: sh
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cd docs
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pip install -r requirements.txt
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Then to produce a HTML version of the documentation:
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.. code:: sh
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make html
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.. |Graphene Logo| image:: http://graphene-python.org/favicon.png
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.. |Build Status| image:: https://travis-ci.org/graphql-python/graphene.svg?branch=master
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:target: https://travis-ci.org/graphql-python/graphene
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.. |PyPI version| image:: https://badge.fury.io/py/graphene.svg
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:target: https://badge.fury.io/py/graphene
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.. |Coverage Status| image:: https://coveralls.io/repos/graphql-python/graphene/badge.svg?branch=master&service=github
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:target: https://coveralls.io/github/graphql-python/graphene?branch=master
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