PyCovenantSQL

Table of Contents

• Requirements
• Installation
• Documentation
• Example
• Resources
• License

This package contains a pure-Python CovenantSQL client library, based on PEP 249.

NOTE: PyCovenantSQL only support high level APIs defined in PEP 249.

Requirements

• Python -- one of the following:
  • CPython : 2.7 and >= 3.4
  • PyPy : Latest version
• Packages:
  • Requests >= 2.19
  • Arrow >= 0.13
• CovenantSQL Adapter Server:
  • CovenantSQL >= 0.0.3

Installation

Package is uploaded on PyPI.

You can install it with pip:

$ python3 -m pip install PyCovenantSQL

Documentation

Documentation is available online: http://developers.covenantsql.io/

Key file and dsn can get from: http://developers.covenantsql.io/docs/quickstart

For support, please fire a issue at Github.

Example

The following examples make use of a simple table

CREATE TABLE `users` (
    `id` INTEGER PRIMARY KEY AUTOINCREMENT,
    `email` varchar(255) NOT NULL,
    `password` varchar(255) NOT NULL
);

import pycovenantsql


# Connect to the database with dsn
# host and port are your local CovenantSQL Adapter server
connection = pycovenantsql.connect(
                             dsn='covenantsql://your_database_id',
                             host='localhost',
                             port=11108,
                             )

try:
    with connection.cursor() as cursor:
        # Create a new record
        sql = "INSERT INTO `users` (`email`, `password`) VALUES (%s, %s)"
        cursor.execute(sql, ('webmaster@python.org', 'very-secret'))

    # connection is autocommit. No need to commit in any case.
    # connection.commit()

    with connection.cursor() as cursor:
        # Read a single record
        sql = "SELECT `id`, `password` FROM `users` WHERE `email`=%s"
        cursor.execute(sql, ('webmaster@python.org',))
        result = cursor.fetchone()
        print(result)
finally:
    connection.close()

This example will print:

{'password': 'very-secret', 'id': 1}

Resources

• DB-API 2.0: http://www.python.org/dev/peps/pep-0249
• CovenantSQL Website: https://covenantsql.io/
• CovenantSQL testnet quick start: https://testnet.covenantsql.io/quickstart
• CovenantSQL source code: https://github.com/CovenantSQL/CovenantSQL

License

PyCovenantSQL is released under the Apache 2.0 License. See LICENSE for more information.