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A light weight mysql client library.

Project Description

Lorm is a light weight mysql client library for Python. Built-in connection pool, Django style lookup expressions.

Installation

The last stable release is available on PyPI and can be installed with pip:

$ pip install lorm

Example

CREATE TABLE `pets` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(20) NOT NULL DEFAULT '',
  `add_time` datetime DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

Connect to Mysql

>>> import pymysql
>>> import lorm
>>> db = lorm.Hub(pymysql)
>>> db.add_pool('default', host='localhost', port=3306, user='root',
    passwd='root', db='test', autocommit=True, pool_size=8, wait_timeout=30)

Insert

>>> db.default.pets.create(name='cat')
1

Query

>>> db.default.pets.get(id=1)
{u'id': 2, u'name': u'cat'}

Row Style

>>> db.default.pets.filter(id__lt=10).select('id')[:]
[{u'id': 1}, {u'id': 2}, {u'id': 4}, {u'id': 5}, {u'id': 6}, {u'id': 7}, {u'id': 8}, {u'id': 9}]
>>> db.default.pets.filter(id__lt=10).values('id')[:]
((1,), (2,), (4,), (5,), (6,), (7,), (8,), (9,))
>>> db.default.pets.filter(id__lt=10).flat('id')[:]
[1, 2, 4, 5, 6, 7, 8, 9]

Raw SQL

>>> db.default.fetchall("select * from pets")
((1, u'cat'), (2, u'dog'), (3, u'bird'))

Transaction

>>> with db.default as c:
>>>     print c.pets.create(name='fish')

For more examples, see example.py

Features

  • Built-in Connection pool
  • Django style lookup expressions
  • Concurrent safe
  • Gevent friendly
  • Dynamically driver

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