PEP 567 Backport
.. image:: https://travis-ci.org/MagicStack/contextvars.svg?branch=master :target: https://travis-ci.org/MagicStack/contextvars
This package implements a backport of Python 3.7 contextvars
module (see PEP 567) for Python 3.6.
Important: at this moment this package does not provide an asyncio event loop with PEP 567 support yet. Stay tuned for updates.
This package replaces the old "contextvars" PyPI package which
repository is available here <https://github.com/gawen/contextvars>
_.
Read the official contextvars
module documentation here:
https://docs.python.org/3.7/library/contextvars.html
PEP 567 <https://www.python.org/dev/peps/pep-0567/>
_ also provides
a comprehensive overview of the API and explains all design choices.
.. code-block:: bash
$ pip install contextvars
.. code-block:: python
import contextvars
my_var = contextvars.ContextVar('my_var')
# ...
The good news is that the standard library always takes the
precedence over site packages, so even if a local contextvars
module is installed, the one from the standard library will be used.
Therefore you can simply list "contextvars" in your
requirements.txt
or setup.py
files.
Another option is to use "platform specific dependencies" <http://setuptools.readthedocs.io/en/latest/setuptools.html\ #declaring-platform-specific-dependencies>
_ setuptools feature:
.. code-block:: python
import setuptools
setuptools.setup(
name="Project",
...
install_requires=[
'contextvars;python_version<"3.7"'
]
)
Apache 2.0.