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Project Description

Cauldron is an asyncio based library that removes boilerplate code when using databases. Currently it supports using postgresql and redis.

Requirements

Installation

To install via pip:

$ pip install cauldron

To install from source:

$ git clone https://github.com/nerandell/cauldron
$ cd cauldron
$ python setup.py install

Usage

Cauldron currently supports postgres and redis. It uses aiopg and aioredis internally but removes a lot of boilerplate code that is usually written.

Sample code using aiopg:

import asyncio
from aiopg.pool import create_pool

dsn = 'dbname=jetty user=nick password=1234 host=localhost port=5432'


class UsePostgres():

    @classmethod
    def test_select(cls):
        pool = yield from create_pool(dsn)

        with (yield from pool) as conn:
            cur = yield from conn.cursor()
            yield from cur.execute('SELECT 1')
            ret = yield from cur.fetchone()
            assert ret == (1,), ret

Using Cauldron:

from cauldron import PostgresStore

class UseCauldron(PostgresStore):
    @classmethod
    def test_select(cls):
        rows = yield from cls.raw_query('select 1')
        print(rows)

Other Examples

cauldron also supports using different cursors in a way that you have to write minimal code.

Using default cursor

from cauldron import PostgresStore

class UseCauldron(PostgresStore):
    @classmethod
    @cursor
    def test_select(cls, cur):
        rows = yield from cls.raw_sql('select * from users')
        print(rows)

Using namedtuple cursor

from cauldron import PostgresStore

class UseCauldron(PostgresStore):
    @classmethod
    @nt_cursor
    def test_select(cls, cur):
        rows = yield from cls.raw_sql('select * from users')
        print(rows)

Using dict cursor:

from cauldron import PostgresStore

class UseCauldron(PostgresStore):
    @classmethod
    @dict_cursor
    def test_select(cls, cur):
        rows = yield from cls.raw_sql('select * from users')
        print(rows)

cauldron also provides functionalities for common DB operations to make your code more readable

Inserting into db:

from cauldron import PostgresStore

class UseCauldron(PostgresStore):
    @classmethod
    def store_user(cls, username, password):
        insert_dict = {'username': username, 'password': password}
        yield from cls.insert('user_table', insert_dict)

License

cauldron is offered under the MIT license.

Source code

The latest developer version is available in a github repository: https://github.com/nerandell/cauldron

Release History

Release History

1.0.14

This version

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1.0.13

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1.0.12

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1.0.11

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1.0.10

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1.0.9

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1.0.8

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1.0.7

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1.0.6

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1.0.5

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1.0.4

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1.0.3

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1.0.2

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1.0.1

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1.0.0

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Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
cauldron-1.0.14.tar.gz (5.3 kB) Copy SHA256 Checksum SHA256 Source Dec 16, 2015

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