Async Support for various databases
Project description
AIO-Databases
The package gives you asycio support for a range of databases (SQLite, PostgreSQL, MySQL).
Features
- Has no dependencies (except databases drivers)
- Supports aiosqlite, aiomysql, aiopg, asyncpg
- Manage pools of connections
- Manage transactions
Requirements
- python >= 3.7
Installation
aio-databases should be installed using pip:
$ pip install aio-databases
You have to choose and install the required database drivers with:
# To support SQLite
$ pip install aio-databases[aiosqlite]
# To support MySQL
$ pip install aio-databases[aiomysql]
# To support PostgreSQL (choose one)
$ pip install aio-databases[aiopg]
$ pip install aio-databases[asyncpg]
# To support ODBC (alpha state)
$ pip install aio-databases[aioodbc]
Usage
- Init a database
from aio_databases import Database
db = Database('sqlite:///:memory:')
- Prepare the database to work
# Initialize a database's pool
async def my_app_starts():
await db.connect()
# Close the pool
async def my_app_ends():
await db.disconnect()
# As an alternative users are able to use the database
# as an async context manager
async with db:
await my_main_coroutine()
- Run SQL queries
await db.execute('select $1', '1')
await db.executemany('select $1', '1', '2', '3')
records = await db.fetchall('select (2 * $1) res', 2)
assert records == [(4,)]
record = await db.fetchone('select (2 * $1) res', 2)
assert record == (4,)
assert record['res'] == 4
result = await db.fetchval('select 2 * $1', 2)
assert result == 4
- Iterate through rows one by one
async for rec in db.iterate('select name from users'):
print(rec)
- Manage connections (please ensure that you have released a connection after acquiring)
# Create a new connection object
conn = db.connection()
# or use the existing which one is binded for the current task
conn = db.connection(False)
# Acquire DB connection
await conn.acquire()
# ...
# Release DB connection
await conn.relese()
# an alternative (acquire/release as an async context)
async with db.connection():
# ...
- Use transactions
async with db.transaction() as trans1:
# do some work ...
async with db.transaction() as trans2:
# do some work ...
await trans2.rollback()
# unnessesary, the transaction will be commited on exit from the
# current context
await trans1.commit()
Bug tracker
If you have any suggestions, bug reports or annoyances please report them to the issue tracker at https://github.com/klen/aio-databases/issues
Contributing
Development of the project happens at: https://github.com/klen/aio-databases
License
Licensed under a MIT License
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
aio-databases-0.3.5.tar.gz
(9.9 kB
view details)
Built Distribution
File details
Details for the file aio-databases-0.3.5.tar.gz.
File metadata
- Download URL: aio-databases-0.3.5.tar.gz
- Upload date:
- Size: 9.9 kB
- Tags: Source
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/3.4.2 importlib_metadata/4.8.1 pkginfo/1.7.1 requests/2.26.0 requests-toolbelt/0.9.1 tqdm/4.62.2 CPython/3.9.7
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 | 2ebdda940649149aa55664274a877fc243972c540dc30b40815132e84509911e |
|
| MD5 | 1c0efd51070f97f7c63326f14247b206 |
|
| BLAKE2b-256 | 2a6683e201e09a84df0bf3eda246fe4cd46b762865171658383310161d0db4f9 |
File details
Details for the file aio_databases-0.3.5-py3-none-any.whl.
File metadata
- Download URL: aio_databases-0.3.5-py3-none-any.whl
- Upload date:
- Size: 12.6 kB
- Tags: Python 3
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/3.4.2 importlib_metadata/4.8.1 pkginfo/1.7.1 requests/2.26.0 requests-toolbelt/0.9.1 tqdm/4.62.2 CPython/3.9.7
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 | 628227552a1e89b86d038c72e3b629d3220c70e98803e583623a6678e8f1b6f5 |
|
| MD5 | 69e2ece7491810800464edadb59ad654 |
|
| BLAKE2b-256 | 57705c19a2bfaa47eb69781a044891a48b8a09f19223f8788c1211885e9f2fcc |
