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DataStax Python Driver for Apache Cassandra
===========================================
.. image:: https://travis-ci.org/datastax/python-driver.png?branch=master
:target: https://travis-ci.org/datastax/python-driver
A modern, `feature-rich <https://github.com/datastax/python-driver#features>`_ and highly-tunable Python client library for Apache Cassandra (2.1+) using exclusively Cassandra's binary protocol and Cassandra Query Language v3.
The driver supports Python 2.7, 3.4, 3.5, 3.6 and 3.7.
If you require compatibility with DataStax Enterprise, use the `DataStax Enterprise Python Driver <http://docs.datastax.com/en/developer/python-dse-driver/>`_.
**Note:** DataStax products do not support big-endian systems.
Feedback Requested
------------------
**Help us focus our efforts!** Provide your input on the `Platform and Runtime Survey <https://docs.google.com/a/datastax.com/forms/d/10wkbKLqmqs91gvhFW5u43y60pg_geZDolVNrxfO5_48/viewform>`_ (we kept it short).
Features
--------
* `Synchronous <http://datastax.github.io/python-driver/api/cassandra/cluster.html#cassandra.cluster.Session.execute>`_ and `Asynchronous <http://datastax.github.io/python-driver/api/cassandra/cluster.html#cassandra.cluster.Session.execute_async>`_ APIs
* `Simple, Prepared, and Batch statements <http://datastax.github.io/python-driver/api/cassandra/query.html#cassandra.query.Statement>`_
* Asynchronous IO, parallel execution, request pipelining
* `Connection pooling <http://datastax.github.io/python-driver/api/cassandra/cluster.html#cassandra.cluster.Cluster.get_core_connections_per_host>`_
* Automatic node discovery
* `Automatic reconnection <http://datastax.github.io/python-driver/api/cassandra/policies.html#reconnecting-to-dead-hosts>`_
* Configurable `load balancing <http://datastax.github.io/python-driver/api/cassandra/policies.html#load-balancing>`_ and `retry policies <http://datastax.github.io/python-driver/api/cassandra/policies.html#retrying-failed-operations>`_
* `Concurrent execution utilities <http://datastax.github.io/python-driver/api/cassandra/concurrent.html>`_
* `Object mapper <http://datastax.github.io/python-driver/object_mapper.html>`_
* `Connecting to DataStax Apollo database (cloud) <https://docs.datastax.com/en/developer/python-driver/latest/cloud/>`_
Installation
------------
Installation through pip is recommended::
$ pip install cassandra-driver
For more complete installation instructions, see the
`installation guide <http://datastax.github.io/python-driver/installation.html>`_.
Documentation
-------------
The documentation can be found online `here <http://datastax.github.io/python-driver/index.html>`_.
A couple of links for getting up to speed:
* `Installation <http://datastax.github.io/python-driver/installation.html>`_
* `Getting started guide <http://datastax.github.io/python-driver/getting_started.html>`_
* `API docs <http://datastax.github.io/python-driver/api/index.html>`_
* `Performance tips <http://datastax.github.io/python-driver/performance.html>`_
Object Mapper
-------------
cqlengine (originally developed by Blake Eggleston and Jon Haddad, with contributions from the
community) is now maintained as an integral part of this package. Refer to
`documentation here <http://datastax.github.io/python-driver/object_mapper.html>`_.
Contributing
------------
See `CONTRIBUTING.md <https://github.com/datastax/python-driver/blob/master/CONTRIBUTING.rst>`_.
Reporting Problems
------------------
Please report any bugs and make any feature requests on the
`JIRA <https://datastax-oss.atlassian.net/browse/PYTHON>`_ issue tracker.
If you would like to contribute, please feel free to open a pull request.
Getting Help
------------
Your best options for getting help with the driver are the
`mailing list <https://groups.google.com/a/lists.datastax.com/forum/#!forum/python-driver-user>`_
and the ``#datastax-drivers`` channel in the `DataStax Academy Slack <https://academy.datastax.com/slack>`_.
License
-------
Copyright DataStax, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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