102 lines
2.8 KiB
ReStructuredText
102 lines
2.8 KiB
ReStructuredText
====================================================
|
|
pluggy - A minimalist production ready plugin system
|
|
====================================================
|
|
|
|
|pypi| |conda-forge| |versions| |github-actions| |gitter| |black| |codecov|
|
|
|
|
This is the core framework used by the `pytest`_, `tox`_, and `devpi`_ projects.
|
|
|
|
Please `read the docs`_ to learn more!
|
|
|
|
A definitive example
|
|
====================
|
|
.. code-block:: python
|
|
|
|
import pluggy
|
|
|
|
hookspec = pluggy.HookspecMarker("myproject")
|
|
hookimpl = pluggy.HookimplMarker("myproject")
|
|
|
|
|
|
class MySpec:
|
|
"""A hook specification namespace."""
|
|
|
|
@hookspec
|
|
def myhook(self, arg1, arg2):
|
|
"""My special little hook that you can customize."""
|
|
|
|
|
|
class Plugin_1:
|
|
"""A hook implementation namespace."""
|
|
|
|
@hookimpl
|
|
def myhook(self, arg1, arg2):
|
|
print("inside Plugin_1.myhook()")
|
|
return arg1 + arg2
|
|
|
|
|
|
class Plugin_2:
|
|
"""A 2nd hook implementation namespace."""
|
|
|
|
@hookimpl
|
|
def myhook(self, arg1, arg2):
|
|
print("inside Plugin_2.myhook()")
|
|
return arg1 - arg2
|
|
|
|
|
|
# create a manager and add the spec
|
|
pm = pluggy.PluginManager("myproject")
|
|
pm.add_hookspecs(MySpec)
|
|
|
|
# register plugins
|
|
pm.register(Plugin_1())
|
|
pm.register(Plugin_2())
|
|
|
|
# call our ``myhook`` hook
|
|
results = pm.hook.myhook(arg1=1, arg2=2)
|
|
print(results)
|
|
|
|
|
|
Running this directly gets us::
|
|
|
|
$ python docs/examples/toy-example.py
|
|
inside Plugin_2.myhook()
|
|
inside Plugin_1.myhook()
|
|
[-1, 3]
|
|
|
|
|
|
.. badges
|
|
|
|
.. |pypi| image:: https://img.shields.io/pypi/v/pluggy.svg
|
|
:target: https://pypi.org/pypi/pluggy
|
|
|
|
.. |versions| image:: https://img.shields.io/pypi/pyversions/pluggy.svg
|
|
:target: https://pypi.org/pypi/pluggy
|
|
|
|
.. |github-actions| image:: https://github.com/pytest-dev/pluggy/workflows/main/badge.svg
|
|
:target: https://github.com/pytest-dev/pluggy/actions
|
|
|
|
.. |conda-forge| image:: https://img.shields.io/conda/vn/conda-forge/pluggy.svg
|
|
:target: https://anaconda.org/conda-forge/pytest
|
|
|
|
.. |gitter| image:: https://badges.gitter.im/pytest-dev/pluggy.svg
|
|
:alt: Join the chat at https://gitter.im/pytest-dev/pluggy
|
|
:target: https://gitter.im/pytest-dev/pluggy?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
|
|
|
|
.. |black| image:: https://img.shields.io/badge/code%20style-black-000000.svg
|
|
:target: https://github.com/ambv/black
|
|
|
|
.. |codecov| image:: https://codecov.io/gh/pytest-dev/pluggy/branch/master/graph/badge.svg
|
|
:target: https://codecov.io/gh/pytest-dev/pluggy
|
|
:alt: Code coverage Status
|
|
|
|
.. links
|
|
.. _pytest:
|
|
http://pytest.org
|
|
.. _tox:
|
|
https://tox.readthedocs.org
|
|
.. _devpi:
|
|
http://doc.devpi.net
|
|
.. _read the docs:
|
|
https://pluggy.readthedocs.io/en/latest/
|