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aioodbc-0.3.3
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ODBC driver for asyncio.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | aioodbc-0.3.3 |
| نام | aioodbc |
| نسخه کتابخانه | 0.3.3 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Nikolay Novik |
| ایمیل نویسنده | nickolainovik@gmail.com |
| آدرس صفحه اصلی | https://github.com/aio-libs/aioodbc |
| آدرس اینترنتی | https://pypi.org/project/aioodbc/ |
| مجوز | Apache 2 |
aioodbc
=======
.. image:: https://travis-ci.com/aio-libs/aioodbc.svg?branch=master
:target: https://travis-ci.com/aio-libs/aioodbc
.. image:: https://coveralls.io/repos/aio-libs/aioodbc/badge.svg?branch=master&service=github
:target: https://coveralls.io/github/aio-libs/aioodbc?branch=master
.. image:: https://img.shields.io/pypi/v/aioodbc.svg
:target: https://pypi.python.org/pypi/aioodbc
.. image:: https://badges.gitter.im/Join%20Chat.svg
:target: https://gitter.im/aio-libs/Lobby
:alt: Chat on Gitter
**aioodbc** is a Python 3.5+ module that makes it possible to access ODBC_ databases
with asyncio_. It relies on the awesome pyodbc_ library and preserves the same look and
feel. *aioodbc* was written using `async/await` syntax (PEP492_) and thus is not compatible
with Python versions older than 3.5. Internally *aioodbc* employs threads to avoid
blocking the event loop, threads_ are not that as bad as you think!. Other
drivers like motor_ use the same approach.
**aioodbc** is fully compatible and tested with uvloop_. Take a look at the test
suite, all tests are executed with both the default event loop and uvloop_.
Supported Databases
-------------------
**aioodbc** should work with all databases supported by pyodbc_. But for now the
library has been tested with: **SQLite**, **MySQL** and **PostgreSQL**. Feel
free to add other databases to the test suite by submitting a PR.
Community
---------
Mailing List: https://groups.google.com/forum/#!forum/aio-libs
Chat room: https://gitter.im/aio-libs/Lobby
Basic Example
-------------
**aioodbc** is based on pyodbc_ and provides the same api, you just need
to use ``yield from conn.f()`` or ``await conn.f()`` instead of ``conn.f()``
Properties are unchanged, so ``conn.prop`` is correct as well as
``conn.prop = val``.
.. code:: python
import asyncio
import aioodbc
loop = asyncio.get_event_loop()
async def test_example():
dsn = 'Driver=SQLite;Database=sqlite.db'
conn = await aioodbc.connect(dsn=dsn, loop=loop)
cur = await conn.cursor()
await cur.execute("SELECT 42 AS age;")
rows = await cur.fetchall()
print(rows)
print(rows[0])
print(rows[0].age)
await cur.close()
await conn.close()
loop.run_until_complete(test_example())
Connection Pool
---------------
Connection pooling is ported from aiopg_ and relies on PEP492_ features:
.. code:: python
import asyncio
import aioodbc
loop = asyncio.get_event_loop()
async def test_pool():
dsn = 'Driver=SQLite;Database=sqlite.db'
pool = await aioodbc.create_pool(dsn=dsn, loop=loop)
async with pool.acquire() as conn:
cur = await conn.cursor()
await cur.execute("SELECT 42;")
r = await cur.fetchall()
print(r)
await cur.close()
await conn.close()
pool.close()
await pool.wait_closed()
loop.run_until_complete(test_pool())
Context Managers
----------------
`Pool`, `Connection` and `Cursor` objects support the context management
protocol:
.. code:: python
import asyncio
import aioodbc
loop = asyncio.get_event_loop()
async def test_example():
dsn = 'Driver=SQLite;Database=sqlite.db'
async with aioodbc.create_pool(dsn=dsn, loop=loop) as pool:
async with pool.acquire() as conn:
async with conn.cursor() as cur:
await cur.execute('SELECT 42 AS age;')
val = await cur.fetchone()
print(val)
print(val.age)
loop.run_until_complete(test_example())
Installation
------------
In a linux environment pyodbc_ (hence *aioodbc*) requires the unixODBC_ library.
You can install it using your package manager, for example::
$ sudo apt-get install unixodbc
$ sudo apt-get install unixodbc-dev
then::
pip install aioodbc
Run tests
---------
For testing purposes you need to install docker_ and the development
requirements::
$ pip install -r requirements-dev.txt
In order to simplify development you should install the provided docker container.
This way you don't need to install any databases or other system libraries, everything happens inside the container.
Then just execute::
$ make docker_build
$ make docker_test
The test will automatically pull images and build containers with
the required databases.
*NOTE:* Running tests requires Python 3.6 or higher.
Other SQL Drivers
-----------------
* aiopg_ - asyncio client for PostgreSQL
* aiomysql_ - asyncio client form MySQL
Requirements
------------
* Python_ 3.5+
* pyodbc_
* uvloop_ (optional)
.. _Python: https://www.python.org
.. _asyncio: http://docs.python.org/3.4/library/asyncio.html
.. _pyodbc: https://github.com/mkleehammer/pyodbc
.. _uvloop: https://github.com/MagicStack/uvloop
.. _ODBC: https://en.wikipedia.org/wiki/Open_Database_Connectivity
.. _aiopg: https://github.com/aio-libs/aiopg
.. _aiomysql: https://github.com/aio-libs/aiomysql
.. _PEP492: https://www.python.org/dev/peps/pep-0492/
.. _unixODBC: http://www.unixodbc.org/
.. _threads: http://techspot.zzzeek.org/2015/02/15/asynchronous-python-and-databases/
.. _docker: https://docs.docker.com/engine/installation/
.. _motor: https://emptysqua.re/blog/motor-0-7-beta/
Changes
-------
0.3.3 (2019-07-05)
^^^^^^^^^^^^^^^^^^
* Parameter echo passed properly in cursor #185
* Close bad connections before returning back to pool #195
0.3.2 (2018-08-04)
^^^^^^^^^^^^^^^^^^
* Added basic documentation for after_created and ThreadPoolExecutor #176 (thanks @AlexHagerman)
* Cursor/connection context managers now rollback transaction on error,
otherwise commit if autocommit=False #178 (thanks @julianit)
0.3.1 (2018-03-23)
^^^^^^^^^^^^^^^^^^
* Add after_create hook for connection configuration (thanks @lanfon72)
0.3.0 (2018-02-23)
^^^^^^^^^^^^^^^^^^
* Added optional pool connections recycling #167 (thanks @drpoggi)
0.2.0 (2017-06-24)
^^^^^^^^^^^^^^^^^^
* Fixed Cursor.execute returns a pyodbc.Cursor instead of itself #114
* Fixed __aiter__ to not be awaitable for python>=3.5.2 #113
* Tests now using aiodocker #106
0.1.0 (2017-04-30)
^^^^^^^^^^^^^^^^^^
* Fixed project version
0.0.4 (2017-04-30)
^^^^^^^^^^^^^^^^^^
* Improved mysql testing
0.0.3 (2016-07-05)
^^^^^^^^^^^^^^^^^^
* Dockerize tests, now we can add more DBs to tests using docker #15, #17, #19
* Test suite executed with both default asyncio and uvloop #18
0.0.2 (2016-01-01)
^^^^^^^^^^^^^^^^^^
* Improved pep 492 support.
* pool.get method removed, use acquire instead.
* Added tests against MySQL.
* Added bunch of doc strings.
0.0.1 (2015-10-12)
^^^^^^^^^^^^^^^^^^
* Initial release.
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.5 | Python |
نحوه نصب
نصب پکیج whl aioodbc-0.3.3:
pip install aioodbc-0.3.3.whl
نصب پکیج tar.gz aioodbc-0.3.3:
pip install aioodbc-0.3.3.tar.gz