Skip to main content
Help us improve PyPI by participating in user testing. All experience levels needed!

A python library providing concurrent push based lazy linked lists

Project description


|build-status| |coverage|

A python library providing a useful abstraction for recording state transitions, compressing them, and distributing to multiple listeners.



The :class:`Succession` class provides a way to reduce long chains of updates
down to a reduced chain with the same effect.

For example, assume that you only care about the sum of the numbers pushed to a
succession, and that it's fine to replace all of the numbers from before you started
listening with the current total. You can do something like the following:

>>> succession = Succession(compress=lambda items: [sum(items)])
<succession.Succession object at 0x7f5a65a10518>
>>> from_start = succession.iter()
>>> for i in [1, 2, 3, 4, 5]:
... succession.push(i)
... succession.close()
>>> from_end = succession.iter()
>>> list(from_start)
[1, 2, 3, 4, 5])
>>> list(from_end)

Iterators forked earlier will not miss any transitions added from the time they
were created. Compression is only applied to transitions before the fork.

Recommended method is to use the version from `pypi`_

.. code::

pip install succession

- Source code:
- Issue tracker:
- Continuous integration:
- PyPI:

The project is licensed under the BSD license. See `LICENSE`_ for details.

.. |build-status| image::
:alt: Build Status
.. |coverage| image::
:alt: Coverage
.. _pypi:

Project details

Release history Release notifications

This version
History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
succession-0.5.0.tar.gz (4.1 kB) Copy SHA256 hash SHA256 Source None Mar 26, 2016

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging CloudAMQP CloudAMQP RabbitMQ AWS AWS Cloud computing Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page